A380
Airbus A380 (a large passenger aircraft)

A/C
Aircraft

AC
Alternating Current

ATC
Air Traffic Control

AFT
Aft (toward the rear of the aircraft)

B737
Boeing 737 (a popular narrow-body aircraft)

CAT
Clear Air Turbulence

CFM
Cubic Feet per Minute (referring to air flow)

DME
Distance Measuring Equipment

EDTO
Extended Diversion Time Operations

FAR
Federal Aviation Regulations

FMS
Flight Management System

FL
Flight Level

GA
General Aviation

GPS
Global Positioning System

ILS
Instrument Landing System

MRO
Maintenance, Repair, and Overhaul

MTOW
Maximum Takeoff Weight

NOTAM
Notice to Airmen

PAX
Passengers

PIC
Pilot in Command

RNAV
Area Navigation

RVSM
Reduced Vertical Separation Minimum

TCAS
Traffic Collision Avoidance System

TFR
Temporary Flight Restriction

VFR
Visual Flight Rules

IFR
Instrument Flight Rules