mayday
Mayday
distress call
distress signal
auto-alarm
autoalarm
SOS
Gibson Girl
Bitching Betty
ground control
attention getter
squawk
traffic paddle
emergency locator transmitter
radiomarker
radio direction finder
ground proximity warning system
airprox
code flag
beam
nautical signal flag
escape hatch
traffic advisory
radio beam
airlifter
tsunameter
airmails
air alert
pan-pan
fogsignal
radio dispatch
foghorn
flight attendant
cabin crew
apparatus
mailplane
airgroup
spotter plane
cockpit voice recorder
modulation
SIGMET
airbridge
siren
alarum
black box
airspeed indicator
emergency position indicating radio beacon
aerobeacon
personal locator beacon
ACARS