AVIATION DEFINITIONS
& TERMINOLOGY Aviation has it's own specific language. This section explains and illustrates some of the terms and definitions used within the industry. You will need to be familiar with these terms in order to better communicate while on board the aircraft.
It is extremely important when you are communicating with the Crew that you accurately describe what you are seeing. This is even more important in the event of an emergency. One of the most important pieces of information the Flight Crew needs to know is whether an occurrence or problem relating to the aircraft is on the left-hand-side or the right-hand-side of the aircraft. As noted earlier, in the aircraft the description of left or right should always be made relative to a facing forward aspect – i.e. looking towards the flight deck.
There are many terms, phrases and abbreviations in use in aviation. Listed below are some of the more common terms and phrases in use:
On the Aircraft A/C - Aircraft AFT - The back or rear of the aircraft AISLE - Space between seats for passengers to walk AOC - Air Operators Certificate
BULKHEAD - A wall that divides one part of the cabin from another area CABIN - Where the passengers sit CAPT. - The Captain. They normally sit on the left hand seat on the flight deck DEFECT - A fault in a piece of equipment F/O - The First Officer (or co-pilot). The second in command who sits in the right hand seat of the flight deck FLIGHT DECK/ COCKPIT - Where the pilots (flight crew) sit FUSELAGE - The main body of the aircraft to which the wings and tail is attached
FWD - Forward part of the aircraft GALLEY - An aircraft kitchen INBOARD - Towards the center from each side of the aircraft
JUMP SEAT - A crewmember specific seat in the cabin or flight deck that is not occupied by the operating crewmembers
LHS - Left Hand Side MEL - Minimum Equipment List MID - Middle or center of the aircraft from front to back OUTBOARD - Towards the outside of the aircraft PAX - Passenger PIC - Pilot in Command PSU - Passenger Service Unit PA - Passenger Address system RHS - Right Hand Side
Outside the Aircraft APU
Auxiliary Power Unit: A small jet engine, usually built into the tail of the aircraft, used as an additional source of electrical and/or air conditioning that can be used on the ground or in the air.
CHOCKS A wedge that is placed either in front or behind the aircraft wheels to prevent the aircraft moving. ‘Off Chocks’ is when the aircraft commences its journey. ‘On Chocks’ is the time the aircraft comes to a complete standstill after a flight.
GPU Ground Power Unit: Used when the APU is 5 Aviation Basics
not available to provide electrical power while the aircraft is on the ground.
HANGAR Large building used for aircraft maintenance. RAMP
The area outside the terminal building where the aircraft are parked for passenger boarding and disembarkation - may also be called the Apron.
STAND
The place on the ramp where an aircraft parks.
TAXIWAY The link between the ramp and the runway. An aircraft moving under its own power on
the ground is taxiing.
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