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Every industry has its acronyms and aviation is certainly no exception. So here is a rough and by no means comprehensive guide to some of the more common terms in use by crew and Training Instructors in aviation.

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A/C	Aircraft (A/C) Referring to an aircraft
AOC	Air Operating Certificate (AOC) A commercial transport license for airlines.
AOG	Aircraft on the Ground (AOG) Refers to an aircraft unable to operate due to a technical fault and needing engineering work.
APU	Auxiliary Power Unit (APU) Power unit designed to provide start up power for the aircraft engines
ATD	Actual Time of Departure (ATD) Variance from the scheduled time of departure
BCF	Bromochlorodifluoromethane (BCF) General term used to describe Halon 1211 type fire extinguishers commonly used on board aircraft.
CAA	Civil Aviation Authority (CAA) The body that responsbile for aviation within the United Kingdom.
CACP	Cabin Area Control Panel (CACP) A local flight attendant control panel for a specific area of the aircraft cabin.
CCM	Cabin Crew Member (CCM) General term for any any of the aircraft Cabin Crew.
CEET	Cabin Emergency Evacuation Trainer (CEET) A representation of an aircraft cabin used for SEP cabin crew scenario training.
CPT	Captain (CPT) Refers to the pilot in charge of the aircraft commonly known as the Aircraft Commander.
CSCP	Cabin System Control Panel (CSCP) The main cabin control panel accessed by crew to monitor and control aircraft cabin functions such as temperature, lighting, door status, waste levels etc.
CSD	Cabin Services Director (CSD) A term used by some airlines to refer to the SCCM on the aircraft.
CSM	Cabin Services Manager (CSM) A term used by some airlines to refer to the SCCM on the aircraft.
CST	Cabin Services Trainer (CST) A representation of an aircraft cabin for the purpose of training Cabin Crew in general and service operations.
CTI	Crew Training Instructor (CTI) Members of staff responsible for crew training both ground based and line training.
DT	Door Trainer (DT) An aircraft type specific representative training device used to familiarise Cabin Crew in the operation of a cabin door.
EASA	European Aviation Safety Agency (EASA) EASA is the European Union Authority for aviation safety. The main activities of the organisation include the strategy and safety management, the certification of aviation products and the oversight of approved organisations and EU Member States.
EBT	Evidence-based Training (EBT) EBT refers to any concept or strategy that is derived from or informed by objective evidence. Most commonly, educational research or metrics of competency observation, instructor and student performance.
ELT	Emergency Location Transmitter (ELT) The ELT is a mobile radio transmitter that can be manually set from the flight deck, directly or be water activated and transmits a radio distress signal.
FAK	First Aid Kit (FAK) General description for the required aircraft first aid kits carried on board a commercial aircraft.
FAP	Flight Attendant Panel (FAP) The main cabin control panel accessed by crew to monitor and control aircraft cabin functions such as temperature, lighting, waste levels etc.
FO	First Officer (FO) Refers to the Flight Crew members directly responsible to the Aircraft Commander.
IFE	In Flight Entertainment (IFE) Refers to the electronic systems presented to passengers for their entertainment during a flight.
MRT	Manual Release Tool (MRT) A Manual Release Tool (MRT) is a small handheld device designed to open the Passenger Service Unit in the event the automatic release fails.
OWE	Over Wing Exit (OWE) A non passenger door or plug type exit situated over the wing of an aircraft for the emergency evacuation of passengers and crew.
PA	Passenger Address (PA) A Passenger Address refers to any announcment made to the passsengers in the cabin or parts of the cabin over the cabin speaker system. Generally a Passenger Address system is intergrated into the Crew Interphone system used for internal aircraft communications as well as passenger announcements
PAX	Passenger (PAX) General shorthand when referring to passengers.
PBE	Portable Breathing Equipment (PBE) Referring to the Smoke Hoods carried on board the aircraft for Cabin Crew use in emergencies such as fighting fires within the cabin.
POCA	Portable Oxygen Cylinder Assembly (POCA) Refers to the portable emergency oxygen cylinders carried in the aircraft cabin.
PRA	Pre-Recorded Announcement (PRA) An electronic system that can playback emergency messages to the cabin in the event of a cabin emergency leaving the crew to deal with the situation.
PSU	Passenger Service Unit (PSU) The Passenger Service Unit is located directly above a row of passenger seats in the cabin and houses the attendant call, lighting, ventilation and Emergency Oxygen Masks.
SCCM	Senior Cabin Crew Member (SCCM) The member of Cabin Crew with overall responsibility for managing the aircraft cabin and Cabin Crew. Not a reference to the oldest member of the crew ;)
SEP	Safety Equipment and Procedures (SEP) General term for the emergency equipment and method of operation for Cabin Crew dealing with potential emergency situations on board an operational aircraft.

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