Mayday
The phrase, 'Mayday', is a callsign used by vessels, aircraft, or any such carrier of people that is transmitted by a person when they are in grave and imminent danger.
Mayday - international radio distress call (from the French, m'aidez help me). It signifies imminent danger to life requiring immediate assistance.
mb - millibar.
MCU - management control unit ...
Mayday
The international radiotelephony distress signal. When repeated three times, it indicates imminent and grave danger and that immediate assistance is requested. (It originally comes from the French words: m'aider, which means: 'to help me') ...
Mayday call
3 x call, ATC, callsign, nature of problem, position, heading, altitude, xpndr set to 7700
Fly pattern ...
Radio Telephony: Mayday (corruption of French "M'aidez").
By Flags (balloon or airships or aeroplanes on the water): N.C.
Mayday: The ultimate international radio distress call, indicating imminent danger to the life of the occupants onboard and requiring immediate assistance. Its slightly less prioritary equivalent is Pan Pan.
Marker Beacon - Electronic navigation facility transmitting a 75 MHz vertical fan shaped radiated pattern
Mayday - International radiotelephony distress signal
MEDEVAC - Medical Evacuation Flight
MEL - Minimum Equipment List
MHz - Megahertz ...
 See also: Aircraft, Pilot, Navigation, Flight, Speed
  
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