Mozambique IACM Commercial Pilot (CPL-A) flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

IACM

The civil aviation authority of Mozambique, responsible for licensing, certification, rulemaking and oversight of aviation activities within the country.

CPL validity period

A commercial pilot licence is valid for five years, subject to a valid Class 1 medical certificate and the required recent experience.

Passenger recency

Three take-offs and three landings within the preceding 90 days are required before carrying passengers; night recency requires the same by night.

Detonation

Uncontrolled explosive combustion of the fuel-air charge after normal ignition, causing high cylinder temperatures and possible engine damage.

Pre-ignition

Ignition of the mixture before the spark plug fires, usually caused by a hot spot in the cylinder, leading to power loss and overheating.

Constant-speed propeller

A propeller whose blade angle is adjusted by a governor to maintain a selected engine speed, converting power into efficient thrust.

Blocked pitot with open drain

The airspeed indicator behaves like an altimeter because static pressure changes reach the case while dynamic pressure is lost.

Density altitude

Pressure altitude corrected for non-standard temperature; approximately pressure altitude plus 120 times the temperature deviation from ISA.

Load factor in a turn

In a level turn, load factor equals one divided by the cosine of the bank angle; at 60 degrees it is 2.0.

Crosswind component

The component of wind perpendicular to the runway, calculated as wind speed multiplied by the sine of the angle between wind and runway.

Final reserve fuel

Fuel required to hold for 30 minutes at 1500 feet above the alternate for turbine aircraft, or the operator-specified value for piston aircraft.

Hypoxia symptoms

Euphoria, impaired judgement, cyanosis and reduced vision; time of useful consciousness at FL350 is about 30 to 60 seconds.

Somatogravic illusion

A false sensation of climbing during acceleration, caused by the otolith organs responding to linear acceleration as if it were a pitch change.

Carbon monoxide poisoning

Cabin heat contamination causing headache, drowsiness and cherry-red lips; treated with 100 percent oxygen and descent.

Night vision

Rod cells provide low-light vision with poor acuity; adaptation takes about 30 minutes and is degraded by white light and smoking.

QNH

The altimeter setting that, when set on the subscale, causes the altimeter to indicate elevation above mean sea level at the aircraft position.

Carburettor icing

Ice formation in the carburettor venturi, possible at outside temperatures between 0 and 20 degrees Celsius with high humidity.

Thunderstorm mature stage

The stage with both strong updrafts and downdrafts, producing hail, lightning, severe turbulence and wind shear at the surface.

Mountain wave

Oscillating airflow on the lee side of a ridge in strong stable wind, producing severe turbulence, downdrafts and lenticular cloud.

1 in 60 rule

A one-degree tracking error produces a one nautical mile offset after 60 nautical miles of flight, used to correct heading.

Magnetic variation

The angular difference between true north and magnetic north; easterly variation is subtracted from true direction to obtain magnetic.

VOR radial

A magnetic bearing measured from the VOR station outward; the CDI centres when the OBS is set to the desired radial.

ADF relative bearing

The angle between the aircraft heading and the direction to the NDB; adding it to heading gives the magnetic bearing to the station.

V1

The decision speed: the maximum speed at which a rejected take-off can be initiated and the aircraft stopped on the remaining runway.

Emergency descent

A rapid descent, usually to 10,000 feet or minimum safe altitude, with oxygen masks on, squawk 7700 and a MAYDAY broadcast.

Minimum fuel declaration

A statement to ATC that landing may be below final reserve fuel; it does not grant priority but alerts controllers to the situation.

Critical angle of attack

The angle of attack at which the wing stalls; it is constant regardless of weight, speed, bank angle or temperature.

Induced drag

Drag caused by lift generation, greatest at low speed and high angle of attack, and increasing with load factor.

Manoeuvring speed VA

The maximum speed at which full deflection of a single control surface will not overstress the aircraft structure.

Dihedral effect

Upward wing angle provides lateral stability because a sideslip increases lift on the lower wing and rolls the aircraft level.

MAYDAY call

The international distress signal transmitted three times on 121.5 MHz, followed by callsign, nature of emergency, position and intentions.

Squawk 7600

The transponder code indicating radio communication failure; the pilot follows the last clearance or published lost-communication procedure.