SIGMET
air carrier
control tower
skyfaring
airfaring
air denial
APO
FAA
grounding
Federal Aviation Administration
International Civil Aviation Organization
flight
ICAO
aviation
freshener
A.
ground control
flightworthiness
Royal Air Force
running load
aeroclub
AAIB
ACARS
RAF
airmailer
Air National Guard
flight controller
A.C.
flattop
ANG
third officer
squadron
chosen instrument
aerotechnics
squawk
electroglow
air base
A-1
hydroaviation
aircrewman
A2C
mailplane
airlifter
air kerma rate
navigator
NASA
terminal control area
air group
aerotolerance
National Aeronautics and Space Administration