ANAC Private Pilot Helicopter (PPH) (ANAC) cheat sheet

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.

Brazilian civil aviation is regulated by ANAC under the CBA (Código Brasileiro de Aeronáutica, Lei 7.565/1986) and the RBAC series of regulations.

RBAC 91 governs general operating and flight rules for civil aircraft in Brazil, including VFR/IFR minima and fuel requirements.

A private pilot licence (PPH) permits non-remunerated flight; carrying passengers or cargo for hire requires a commercial licence.

Pilot privileges are valid only with a current Class 2 (or higher) medical certificate and a valid rating for the aircraft type.

Aircraft must hold a valid Certificate of Airworthiness (Certificado de Aeronavegabilidade) and be registered with ANAC (RAB).

VFR minimum visibility in controlled airspace at lower levels is commonly 5 km, with cloud separation of 1500 m horizontally and 300 m vertically; class-specific minima apply.

Alcohol: no flight within 8 hours of consuming alcohol, and blood alcohol must be zero; ICAO Annex 1 medical standards apply.

Logbook entries must record date, aircraft type/registration, departure and arrival points, and flight time; they are retained as evidence of experience.

The main rotor provides lift and thrust; the tail rotor counters main-rotor torque and provides yaw control (anti-torque).

The swashplate converts non-rotating control inputs into rotating blade pitch changes; collective changes pitch equally on all blades, cyclic changes pitch cyclically.

Rotor systems: fully articulated (flapping, lead-lag, feathering hinges), semi-rigid (teetering), and rigid (hingeless).

RPM is governed by the engine/rotor governor; a freewheeling unit (sprag clutch) allows the rotor to spin after engine failure.

The magneto system is independent of the aircraft battery and provides ignition; both magnetos are checked during run-up.

Carburettor ice can form at ambient temperatures between roughly -7 °C and +21 °C with high humidity; carb heat is applied before ice forms.

Fuel: aviation gasoline (AVGAS 100LL) or turbine fuel (JET A-1) depending on engine; fuel grade must never be substituted without approval.

The cyclic controls airspeed and attitude; the collective controls altitude/power; pedals control heading via tail-rotor thrust.

Density altitude increases with high elevation, high temperature, and high humidity; higher density altitude reduces both engine power and rotor efficiency.

Maximum takeoff weight (MTOW) must include fuel, crew, passengers, baggage, and usable payload; exceeding it invalidates performance data.

Weight and balance: the centre of gravity must remain inside the forward and aft limits for all loading configurations and fuel states.

Hover performance charts give in-ground-effect (IGE) and out-of-ground-effect (OGE) ceilings as a function of weight, temperature, and pressure altitude.

Fuel planning must include trip fuel, reserve, and contingency; VFR reserve is typically 30 minutes (day) or 45 minutes (night) in Brazil.

Headwind increases climb gradient and reduces takeoff distance; tailwind increases takeoff and landing distances and reduces climb performance.

Autorotation descent rate increases with weight and density altitude; planning must ensure a suitable landing area is reachable along the route.

Performance calculations must use the most limiting of pressure altitude, temperature, and wind to remain conservative.

Hypoxia symptoms include euphoria, impaired judgement, headache, and cyanosis; time of useful consciousness decreases with altitude.

Hyperventilation causes dizziness and tingling; it is treated by controlled, slower breathing, not by increasing rate.

Spatial disorientation occurs when visual cues conflict with vestibular (inner ear) signals; trust instruments over sensations.

Fatigue degrades reaction time, attention, and decision-making; it is managed by rest, not by stimulants.

The pressurisation/oxygen rule: supplemental oxygen is required above 10,000 ft (or per regulation) and for night flight above 12,500 ft in unpressurised aircraft.

Carbon monoxide from exhaust causes headache and confusion; it is detected by smell or CO detector and treated by fresh air and oxygen.

Stress and workload reduce situational awareness; use of checklists and standard callouts reduces error.

Alcohol, drugs, and some medications impair performance; self-medication before flight is prohibited.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 2 °C per 1000 ft up to the tropopause.

QNH is the pressure setting that makes the altimeter read elevation above mean sea level; QFE reads height above the aerodrome.

A cold front brings rapid pressure falls, wind shifts, thunderstorms, and clearing after passage; a warm front brings gradual cloud and steady rain.

Convective clouds (cumulus, cumulonimbus) form with instability, heating, and moisture; they bring turbulence, icing, and hail.

Wind shear and microbursts near thunderstorms cause sudden airspeed and altitude changes; avoid thunderstorm cells by at least 20 NM.

Icing forms in supercooled clouds between 0 °C and -20 °C; it adds weight and degrades rotor performance.

Fog and low stratus reduce visibility; radiation fog forms on clear, calm nights with high humidity.

METAR reports current conditions; TAF forecasts aerodrome conditions; both use coded wind, visibility, cloud, and temperature groups.

True heading = true course ± wind correction; magnetic heading = true heading ± magnetic variation.

Compass deviation is the error of the magnetic compass on a given heading; it is applied after variation.

1 in 60 rule: a 1 NM error over 60 NM corresponds to 1° of track error.

Time en route = distance / groundspeed; groundspeed = true airspeed ± wind component along track.

VFR navigation uses pilotage (visual reference), dead reckoning (time, speed, heading), and radio navigation aids.

A VOR radial is a magnetic bearing from the station; the CDI centres when the selected radial matches the aircraft's position.

GPS position must be cross-checked with other means; RAIM and database currency affect reliability.

Fuel required = (fuel burn rate) × (time en route + reserve); recalculate at each waypoint.

Pre-flight inspection checks rotor blades, controls, fuel, oil, and documents before every flight.

Normal takeoff: increase collective to lift off vertically, then accelerate to best climb speed (often 50-60 kt) for obstacle clearance.

Autorotation entry: lower collective, maintain rotor RPM, establish glide at best autorotation speed, and flare before touchdown.

Hovering autorotation and confined-area operations require prior training and a clear landing zone.

Emergency procedures: engine failure in hover (cushioning collective), engine failure in cruise (autorotation), tail-rotor failure (maintain forward speed and land).

Weight and balance and performance checks are completed before every flight; checklists are mandatory.

Radio failure: squawk 7600, follow light signals or standard procedures, and land as soon as practicable.

Post-flight: shut down, secure controls, and complete the aircraft log and defect report.

Lift = ½ ρ V² S CL; rotor lift depends on blade angle of attack, airspeed, and air density.

Induced flow through the rotor disk creates downwash; induced drag decreases with airspeed in the hover-to-cruise transition.

Translational lift occurs as airspeed increases from the hover, improving rotor efficiency (effective translational lift around 10-15 kt).

Dissymmetry of lift: advancing blade has higher airspeed than retreating blade; flapping and cyclic feathering equalise lift.

Retreating blade stall occurs at high speed, high weight, or high density altitude; it causes vibration and pitch-up.

Ground effect reduces induced velocity and increases lift near the surface (within about one rotor diameter).

Autorotation: rotor is driven by upward airflow; rotor RPM is controlled by collective, and descent rate by airspeed.

Torque reaction from the main rotor must be countered by tail-rotor thrust; loss of tail-rotor effectiveness causes uncontrolled yaw.

Standard phraseology: use ICAO/ANAC phraseology; read back clearances and runway instructions.

Distress call: MAYDAY (three times) for life-threatening emergency; urgency call: PAN-PAN (three times).

Emergency squawks: 7700 (emergency), 7600 (radio failure), 7500 (unlawful interference).

Position report format: station called, own call sign, position, altitude, and next reporting point.

VHF frequencies: 118.000-136.975 MHz; emergency frequency 121.5 MHz.

Read back: runway, hold-short, altitude, heading, and frequency instructions must be read back.

Radio discipline: listen before transmitting, use standard calls, and keep transmissions brief.

Lost communication: squawk 7600, maintain last assigned altitude, and follow published lost-comm procedures.