GCAA CPL Theory Exam (UAE) cheat sheet

ICAO Annex 2 (Rules of the Air): VFR flight requires cloud separation and visibility minima set by the State; controlled airspace may impose ATC clearance.

An aircraft may not be operated unless it holds a valid Certificate of Airworthiness and is maintained per an approved maintenance programme.

ICAO Annex 1 sets pilot licensing standards; a CPL requires a Class 1 medical certificate and demonstrated competency in all required subject areas.

Right-of-way: converging aircraft of the same category - the one on the right has right of way; an aircraft landing or on final approach has right of way over others.

Aircraft must not fly over congested areas below the minimum height permitting a safe forced landing; elsewhere minima are set by the State (commonly 500 ft AGL).

Flight time, duty time and rest requirements are set by the State; the commander is responsible for the flight's operational control and legality.

Aircraft nationality and registration marks must be displayed per Annex 7; the registration certificate must be carried on board.

Accident/incident definitions come from Annex 13; the State of Occurrence institutes the investigation and the State of Registry/Operator participates.

Four-stroke cycle: intake, compression, combustion (power), exhaust; two crankshaft revolutions complete the cycle in a four-stroke engine.

Detonation is uncontrolled explosive combustion from excessive pressure/temperature; pre-ignition is ignition before the spark - both cause power loss and heat.

Mixture control: lean as altitude increases to maintain the correct fuel/air ratio; rich mixture is used for high power and cooling.

A constant-speed propeller maintains RPM via a governor; increasing pitch increases load on the engine and reduces RPM.

Hydraulic system pressure is generated by an engine-driven pump; accumulators store pressure and damp pressure fluctuations.

Pitot-static system: pitot tube supplies dynamic pressure; static port supplies ambient pressure; blockage causes erroneous airspeed indications.

Electrical system: alternator/generator supplies DC; battery provides starting and emergency power; the bus bar distributes power to consumers.

Landing gear: nosewheel steering and brakes are separate systems; differential braking assists directional control on the ground.

Density altitude increases with altitude, high temperature and high humidity, degrading takeoff, climb and landing performance.

Takeoff distance = ground roll + distance to 50 ft; landing distance = distance from 50 ft to stop, both corrected for wind, slope and surface.

Headwind decreases ground roll; tailwind increases it; a 10% increase in takeoff weight increases takeoff distance by roughly 20% or more.

Rate of climb (ROC) = (excess power) / weight; climb gradient = (excess thrust) / weight.

Fuel planning: trip fuel + contingency + alternate + final reserve + taxi fuel; final reserve typically 30 minutes for VFR.

Centre of gravity forward of the aft limit increases stability but worsens performance; aft of limit reduces stability and control.

Mass and balance: moment = mass × arm; CG = total moment / total mass; loading must keep CG within the certified envelope.

True airspeed increases with altitude for a given IAS; ground speed = TAS corrected for wind component along track.

Hypoxia: insufficient oxygen to tissues; symptoms include euphoria, impaired judgement and cyanosis; supplemental oxygen is required above specified cabin altitudes.

Hyperventilation causes CO2 washout, leading to dizziness and tingling; treatment is controlled breathing and reducing the breathing rate.

Spatial disorientation results from conflicting vestibular and visual cues; trust instruments, not sensations, in IMC.

The vestibular system (semicircular canals and otolith organs) senses angular and linear acceleration, not steady-state motion.

Night vision relies on rods (scotopic vision), which are sensitive to low light but poor at colour and detail; use off-centre viewing.

Fatigue degrades attention, reaction time and decision-making; circadian low points occur in early morning and mid-afternoon.

Stress: moderate stress can improve performance; excessive stress impairs it; use workload management and prioritisation.

Decompression sickness and barotrauma relate to pressure changes; avoid flying soon after diving and equalise ear/sinus pressure during descent.

Standard atmosphere: sea-level pressure 1013.25 hPa, temperature 15 °C, lapse rate 1.98 °C per 1000 ft in the troposphere.

QNH is the pressure reduced to sea level; QFE is pressure at the aerodrome; QNE is 1013.25 hPa used above the transition altitude.

ISA temperature deviation = actual temperature − ISA temperature at that level; used to compute density altitude.

Cumulonimbus clouds indicate unstable air, turbulence, icing and thunderstorms; avoid them by a wide margin.

Icing occurs most readily between 0 °C and −20 °C in visible moisture; carburettor icing can occur at higher ambient temperatures.

Wind veers (turns clockwise) with height in the Northern Hemisphere due to the Coriolis effect and friction near the surface.

Fog forms when air is cooled to its dew point; radiation fog forms on clear calm nights, advection fog when warm moist air moves over a cold surface.

Altimeter setting: high-to-low pressure or high-to-low temperature causes the altimeter to over-read; 'high to low, look out below'.

Great circle is the shortest path between two points on a sphere; rhumb line is a constant-heading line crossing meridians at the same angle.

Variation is the angle between true and magnetic north; deviation is the error caused by the aircraft's magnetic field.

True course ± variation = magnetic course; magnetic course ± deviation = compass course.

1 minute of latitude = 1 nautical mile; 1 minute of longitude = 1 NM × cos(latitude).

Dead reckoning: track = heading corrected for wind; ground speed = TAS ± wind component along track.

Wind triangle: heading and TAS combined with wind velocity give track and ground speed.

Mercator projection: rhumb lines are straight but scale increases with latitude; used for navigation charts.

Time en route = distance / ground speed; fuel required = fuel flow × time en route.

Pre-flight: check NOTAMs, weather, fuel, mass and balance, and aircraft documents; confirm the aircraft is airworthy.

Emergency: aviate, navigate, communicate - maintain aircraft control before dealing with the problem.

Engine fire in flight: shut off fuel, close the mixture, select the fire extinguisher, then carry out the forced landing or diversion.

Checklists are used for normal and emergency procedures; memory items are limited to time-critical actions.

Wake turbulence: avoid the flight path of preceding aircraft; stay above and upwind; allow separation on takeoff and landing.

Emergency descent: use spoilers/idle power, maintain structural and passenger comfort limits, and descend to a safe altitude.

Radio failure: squawk 7600, follow the published lost-communication procedure, and land at the destination or alternate as applicable.

Runway incursion prevention: read back clearances, confirm hold-short instructions, and maintain situational awareness on the manoeuvring area.

Lift = ½ × ρ × V² × S × CL; lift increases with the square of airspeed and with air density.

Angle of attack is the angle between the chord line and the relative airflow; the critical angle of attack produces the stall.

Stall occurs at the critical angle of attack regardless of airspeed, weight or attitude; recovery is to reduce angle of attack.

Induced drag decreases with increasing airspeed; parasite drag increases with the square of airspeed.

Total drag is minimum at the speed where induced drag equals parasite drag; this is the best glide speed.

Load factor = lift / weight; increasing bank angle increases load factor and stall speed (stall speed rises with √load factor).

Bernoulli's principle: faster-moving air has lower pressure; combined with Newton's third law, it explains lift generation.

Dihedral provides lateral stability; sweepback and keel effect also contribute to roll stability.

Standard phraseology: use ICAO standard phrases; read back clearances and runway instructions to confirm understanding.

Distress call: MAYDAY (spoken three times) for grave and imminent danger; urgency call: PAN-PAN for urgent but non-immediate danger.

Squawk codes: 7700 emergency, 7600 radio failure, 7500 unlawful interference.

Position report: aircraft identification, position, time, altitude, next position and ETA.

Emergency frequency is 121.5 MHz; use it to contact ATC or other aircraft in distress situations.

Read-back is required for clearances, runway assignments and hold-short instructions; use standard words like ROGER, WILCO, AFFIRM.

Transponder: mode A gives identity, mode C gives altitude; mode S provides selective addressing and data.

Radio discipline: listen before transmitting, keep transmissions brief, and use the aircraft's call sign at the start of each transmission.

VOR provides magnetic bearing (radial) from the station; the CDI centres when the selected radial matches the aircraft's position.

NDB/ADF: the ADF needle points to the station; relative bearing plus heading equals magnetic bearing to the station.

DME measures slant range distance to the station; indicated distance is greater than ground distance at high altitude.

ILS: localiser provides lateral guidance, glideslope provides vertical guidance; the marker beacons indicate distance to threshold.

GPS: position from satellite ranging; RAIM monitors integrity; accuracy depends on satellite geometry (HDOP).

Radar: primary radar detects echoes; secondary radar uses transponder replies for identification and altitude.

RNAV allows navigation on any desired path using ground or satellite-based navaids; RNP adds on-board performance monitoring.

Aircraft antenna position affects reception; VOR/LOC antennas are usually on the vertical stabiliser, and GPS antennas on the upper fuselage.

ICAO Annex 11 covers air traffic services; Annex 14 covers aerodrome design and operations.

A controlled flight must obtain and comply with an ATC clearance before entering controlled airspace.

The commander has final authority over the aircraft and may deviate from rules in an emergency, reporting the deviation afterwards.

Aircraft must carry documents: registration, certificate of airworthiness, crew licences, and journey log as required by the State.

Minimum fuel: declare an emergency when fuel is insufficient to reach the destination with required reserves.

Search and rescue: pilots must report overdue aircraft and assist as able; ELT activation aids location.

Aerodrome traffic circuit: standard is left-hand unless otherwise published; join downwind or as instructed by ATC.

Licence validity: CPL privileges require a current medical and recent experience; recency requirements are set by the State.

Vision: cones provide colour and detail in bright light; rods provide low-light vision and are concentrated in the periphery.

Dark adaptation takes about 30 minutes; avoid bright light to preserve night vision.

Hypoxia symptoms vary with altitude; above 10,000 ft without oxygen, judgement and coordination deteriorate.

Carbon monoxide poisoning causes hypoxia-like symptoms; cabin heat systems should be checked for leaks.

Stress and fatigue reduce situational awareness; use CRM principles (communication, leadership, teamwork) to manage workload.

The ear: the eustachian tube equalises pressure; during descent, equalise by swallowing or the Valsalva manoeuvre.

Dehydration and heat affect performance; maintain hydration and avoid overheating in the cockpit.

Spatial disorientation: rely on instruments; vestibular illusions include the somatogravic and leans illusions.

Cloud types: cumulus (convective), stratus (layered), cirrus (high ice clouds); cumulonimbus indicates severe weather.

Stability: unstable air produces convective clouds and showers; stable air produces layered cloud and steady precipitation.

Wind shear: sudden change in wind speed/direction with height; dangerous on approach and takeoff; go-around if encountered.

Thunderstorms have three stages: cumulus, mature, dissipating; the mature stage has the greatest hazard (hail, turbulence, lightning).

Icing types: rime (rough, from small droplets), clear (glaze, from large droplets); both degrade lift and increase drag.

Altimeter: setting QNH gives altitude above mean sea level; setting QFE gives height above the aerodrome.

METAR is an observed aerodrome report; TAF is a forecast; both use standard codes for wind, visibility, cloud and weather.

Jet streams are strong upper-level winds; they affect groundspeed and fuel planning on long routes.

Heading is the direction the aircraft nose points; track is the actual path over the ground.

Drift = track − heading; wind correction angle compensates for drift.

Magnetic variation east: magnetic heading is less than true heading (east is least).

Compass deviation is read from the compass correction card; apply it to get compass heading.

1 NM = 1.852 km; 1 knot = 1 NM per hour.

Plotting: use a protractor for course and a ruler for distance; measure distance from the scale.

Position fixing: use two or more bearings or ranges; the intersection gives the fix.

Flight planning: compute leg times, fuel, and alternates; update the plan with actual winds en route.

Before takeoff: brief the departure, emergency actions and rejected takeoff procedure.

Rejected takeoff: close throttles, apply brakes, maintain directional control; stop straight ahead if possible.

Forced landing: select a suitable field, maintain glide speed, plan the approach, and configure for landing.

Ditching: land into wind and parallel to swell; secure the aircraft and prepare for evacuation.

Fire on the ground: stop, shut down, evacuate, and use the extinguisher if trained.

Passenger briefing: include exits, life jackets, oxygen and emergency procedures.

Cabin pressure: if pressurisation fails, don oxygen masks and descend to a safe altitude.

Post-flight: report defects, complete the journey log, and secure the aircraft.

Aerofoil: camber and angle of attack produce lift; the stagnation point moves with angle of attack.

Boundary layer: laminar flow near the leading edge; transition to turbulent flow increases skin friction but resists separation.

Stall warning: buffet or stall horn occurs near the critical angle of attack; recover by lowering the nose.

Spin: a stalled aircraft with yaw; recovery is to reduce angle of attack, apply opposite rudder, then recover from the dive.

Stability: positive static stability returns the aircraft to equilibrium; dynamic stability concerns the motion over time.

Control: elevator controls pitch, ailerons control roll, rudder controls yaw; adverse yaw occurs when ailerons are applied.

Flaps increase lift and drag; they lower the stall speed but reduce climb performance.

Mach effects: as speed approaches Mach 1, shock waves form; critical Mach number is where airflow first reaches Mach 1.

Phonetic alphabet: Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.

Numbers are spoken digit by digit; use 'decimal' for the point (e.g., one two three decimal four).

Standard words: ROGER (received), WILCO (will comply), AFFIRM (yes), NEGATIVE (no), STANDBY (wait), SAY AGAIN (repeat).

Emergency: MAYDAY for distress; PAN-PAN for urgency; both repeated three times.

Transponder codes: 7700 emergency, 7600 radio failure, 7500 hijack.

Read-back is required for clearances, runway instructions, and altitude assignments.

Frequency 121.5 MHz is the emergency frequency; monitor it when able.

Call sign: use the aircraft registration or flight identification; include it at the start of each transmission.

VOR radials are magnetic bearings from the station; to fly inbound, select the radial and track the CDI.

NDB/ADF: relative bearing is the angle between the aircraft heading and the station; magnetic bearing = heading + relative bearing.

DME: slant range; at 10,000 ft and 5 NM ground distance, slant range is about 5.2 NM.

ILS localiser frequency is in the VHF band; glideslope is UHF; the approach chart lists both.

GPS: at least four satellites are needed for a 3D fix; RAIM detects integrity failures.

RNAV/RNP: RNP requires on-board performance monitoring and alerting; RNAV does not.

Radar: primary radar uses reflections; secondary radar uses transponder replies (mode A/C/S).

Antenna placement: VOR/LOC on the vertical stabiliser; glideslope on the nose; GPS on the upper fuselage.

ICAO Annex 2: VFR minima depend on airspace class; in controlled airspace, ATC clearance is required.

Right of way: aircraft on final approach has priority; converging aircraft - the one on the right has right of way.

Minimum height: not below 500 ft AGL over non-congested areas, except for takeoff and landing.

Certificate of airworthiness must be valid; maintenance per approved programme.

Licence: CPL requires Class 1 medical and demonstrated competency.

Accident/incident: Annex 13 investigation by the State of Occurrence.

Flight time and duty limits are set by the State; commander responsible for legality.

Registration marks displayed per Annex 7; registration certificate carried on board.

Four-stroke cycle: intake, compression, combustion, exhaust; two crankshaft revolutions.

Detonation and pre-ignition cause power loss and heat; avoid by correct mixture and power settings.

Mixture: lean with altitude; rich for high power and cooling.

Constant-speed propeller: governor maintains RPM; increasing pitch increases load and reduces RPM.

Hydraulic system: engine-driven pump; accumulator stores pressure.

Pitot-static: pitot supplies dynamic pressure; static supplies ambient; blockage causes erroneous airspeed.

Electrical: alternator/generator supplies DC; battery for starting and emergency.

Landing gear: nosewheel steering and brakes separate; differential braking for directional control.

Density altitude increases with altitude, temperature and humidity; degrades performance.

Takeoff distance = ground roll + distance to 50 ft; corrected for wind, slope and surface.

Headwind decreases ground roll; tailwind increases it; weight increase raises takeoff distance significantly.

ROC = excess power / weight; climb gradient = excess thrust / weight.

Fuel planning: trip + contingency + alternate + final reserve + taxi; final reserve typically 30 min VFR.

CG forward of aft limit increases stability but worsens performance; aft reduces stability.

Moment = mass × arm; CG = total moment / total mass.

TAS increases with altitude for a given IAS; ground speed = TAS corrected for wind.

Hypoxia: insufficient oxygen; symptoms include euphoria, impaired judgement and cyanosis.

Hyperventilation: CO2 washout; dizziness and tingling; treat with controlled breathing.

Spatial disorientation: conflicting vestibular and visual cues; trust instruments in IMC.

Vestibular system senses angular and linear acceleration, not steady motion.

Night vision: rods for low light; poor colour and detail; use off-centre viewing.

Fatigue degrades attention and decision-making; circadian lows in early morning and mid-afternoon.

Stress: moderate stress can improve performance; excessive impairs it.

Decompression sickness and barotrauma relate to pressure changes; avoid flying soon after diving.

Standard atmosphere: 1013.25 hPa, 15 °C at sea level, lapse rate 1.98 °C per 1000 ft.

QNH reduced to sea level; QFE at aerodrome; QNE 1013.25 hPa above transition altitude.

ISA deviation = actual − ISA temperature; used for density altitude.

Cumulonimbus: unstable air, turbulence, icing, thunderstorms; avoid.

Icing most likely between 0 °C and −20 °C in visible moisture; carburettor icing at higher temperatures.

Wind veers with height in the Northern Hemisphere due to Coriolis and friction.

Fog: radiation fog on clear calm nights; advection fog when warm moist air moves over cold surface.

High-to-low pressure or temperature: altimeter over-reads; 'high to low, look out below'.

Great circle is shortest path; rhumb line is constant heading.

Variation: angle between true and magnetic north; deviation: aircraft magnetic error.

True course ± variation = magnetic course; ± deviation = compass course.

1 minute latitude = 1 NM; 1 minute longitude = 1 NM × cos(latitude).

Dead reckoning: track = heading corrected for wind; GS = TAS ± wind component.

Wind triangle: heading and TAS plus wind give track and GS.

Mercator: rhumb lines straight; scale increases with latitude.

Time en route = distance / GS; fuel = flow × time.

Pre-flight: NOTAMs, weather, fuel, mass and balance, documents; confirm airworthiness.

Emergency: aviate, navigate, communicate.

Engine fire: shut off fuel, close mixture, use extinguisher, then land.

Checklists for normal and emergency; memory items for time-critical actions.

Wake turbulence: avoid preceding aircraft's path; stay above and upwind.

Emergency descent: spoilers/idle power, respect structural limits.

Radio failure: squawk 7600, follow lost-communication procedure.

Runway incursion: read back clearances, confirm hold-short instructions.

Lift = ½ × ρ × V² × S × CL; increases with airspeed squared and density.

Angle of attack: angle between chord line and relative airflow; critical angle produces stall.

Stall at critical angle regardless of speed, weight or attitude; recover by reducing angle of attack.

Induced drag decreases with speed; parasite drag increases with speed squared.

Minimum total drag where induced equals parasite; best glide speed.

Load factor = lift / weight; stall speed rises with √load factor.

Bernoulli: faster air lower pressure; Newton's third law also explains lift.

Dihedral provides lateral stability; sweepback and keel effect contribute.

Use ICAO standard phraseology; read back clearances and runway instructions.

MAYDAY (three times) for distress; PAN-PAN for urgency.

Squawk 7700 emergency, 7600 radio failure, 7500 unlawful interference.

Position report: identification, position, time, altitude, next position, ETA.

Emergency frequency 121.5 MHz.

Read-back required for clearances, runway assignments, hold-short instructions; use ROGER, WILCO, AFFIRM.

Transponder: mode A identity, mode C altitude, mode S selective addressing.

Radio discipline: listen before transmitting, keep transmissions brief, use call sign.

VOR: magnetic bearing (radial); CDI centres when selected radial matches position.

NDB/ADF: needle points to station; relative bearing + heading = magnetic bearing.

DME: slant range; greater than ground distance at high altitude.

ILS: localiser lateral, glideslope vertical; marker beacons indicate distance.

GPS: satellite ranging; RAIM monitors integrity; HDOP affects accuracy.

Primary radar detects echoes; secondary radar uses transponder replies.

RNAV: any desired path; RNP adds on-board performance monitoring.

Antenna placement: VOR/LOC on vertical stabiliser; GPS on upper fuselage.

ICAO Annex 2: VFR minima per airspace class; ATC clearance required in controlled airspace.

Right of way: aircraft on final approach has priority; converging - the one on the right has right of way.

Minimum height: not below 500 ft AGL over non-congested areas, except takeoff and landing.

Certificate of airworthiness valid; maintenance per approved programme.

CPL requires Class 1 medical and demonstrated competency.

Annex 13: investigation by State of Occurrence.

Flight time and duty limits set by State; commander responsible.

Registration marks per Annex 7; registration certificate on board.

Four-stroke cycle: intake, compression, combustion, exhaust; two crankshaft revolutions.

Detonation and pre-ignition cause power loss and heat.

Mixture: lean with altitude; rich for high power and cooling.

Constant-speed propeller: governor maintains RPM; increasing pitch increases load and reduces RPM.

Hydraulic system: engine-driven pump; accumulator stores pressure.

Pitot-static: pitot dynamic pressure; static ambient; blockage causes erroneous airspeed.

Electrical: alternator/generator DC; battery for starting and emergency.

Landing gear: nosewheel steering and brakes separate; differential braking.

Density altitude increases with altitude, temperature and humidity; degrades performance.

Takeoff distance = ground roll + distance to 50 ft; corrected for wind, slope and surface.

Headwind decreases ground roll; tailwind increases it; weight increase raises takeoff distance.

ROC = excess power / weight; climb gradient = excess thrust / weight.

Fuel planning: trip + contingency + alternate + final reserve + taxi; final reserve typically 30 min VFR.

CG forward of aft limit increases stability but worsens performance; aft reduces stability.

Moment = mass × arm; CG = total moment / total mass.

TAS increases with altitude for a given IAS; GS = TAS corrected for wind.

Hypoxia: insufficient oxygen; symptoms include euphoria, impaired judgement and cyanosis.

Hyperventilation: CO2 washout; dizziness and tingling; treat with controlled breathing.

Spatial disorientation: conflicting vestibular and visual cues; trust instruments in IMC.

Vestibular system senses angular and linear acceleration, not steady motion.

Night vision: rods for low light; poor colour and detail; use off-centre viewing.

Fatigue degrades attention and decision-making; circadian lows in early morning and mid-afternoon.

Stress: moderate stress can improve performance; excessive impairs it.

Decompression sickness and barotrauma relate to pressure changes; avoid flying soon after diving.