Emergency Radio Procedures Flashcards
what are the two types of emergency calls?
distress (mayday) and urgency (panpan)
what should you activate in an emergency or impending emergency,
ELT
to the judgement of the pilot how does one determine the difference of an urgency and distress?
- distress is a condition of being threatened by serious and or imminent danger and of requiring immediate assistance.
- Urgency is a condition concerning the safety of the aircraft or other vehicle, or of same person or within sight, but which doesn’t require immediate assistance.
is the MAYDAY call the top priority?
yes
when are MAYDAY calls appropriate? (4)
- total engine failure
- fire or smoke in any part or component of the aircraft
- total incapacitation of the pilot where the caller isn’t qualified or capable of continuing the flight safely.
- Any other situation where you are threatened by grave and immediate danger and you require immediate assistance.
where should the MAYDAY distress message be transmitted?
over the air-ground frequency currently in use.
what happens when you’re flying into an MBZ or CFZ and you are in a distress situation? and what should you do?
may be on a frequency not monitored by ATS. it’s then the pilot’s decision as to whether to stay on the frequency or change to a frequency saved by ATS.
what happens if you receive no response during a distress message?
- change frequency and repeat distress call on another frequency which you know is being monitored by an appropriate station or on the maritime mobile service RTF calling frequencies
- 121.5 MHz (international emergency frequency)
what is the whole procedure to a MAYDAY distress message?
- squawk 7700
- turn ELT on
- distress message:
MAYDAY x3 (priority)
name of station addressed
aircraft callsign (priority)
the nature of the distress condition
your intentions
position, altitude, and heading (priority)
A PIC of an aircraft in distress is permitted to do what?
impose radio silence on any other radio stations that interfere with the distress traffic.
what are the appropriate transmissions of a radio silence during a distress message?
- “ALL STATIONS (or) ALFA BRAVO CHARLIE - NELSON TOWER - STOP TRANSMITTING - MAYDAY”
- “ALL STATIONS (or) ALFA BRAVO CHARLIE - HOTEL KILO ALFA - STOP TRANSMITTING - MAYDAY”
when can stations commence transmission again after radio silence? (4)
- distress is cancelled or distress traffic is terminated
- all distress traffic has been transferred to other frequencies
- station controlling comms gives permissions
- it has to render assistance itself
what is PAN PAN used for?
to alert ATS of real or potential threat to the aircraft but immediate assistance isn’t needed.
what are examples of PAN PAN? (4)
- experiencing navigational difficulties and require assistance from ATC, flight service, or other aircraft. can apply to conditions when visibility or navigation is hard.
- aircraft experiences malfunctions like abnormally low air pressure. immediate assistance is not needed but could worsen and develop to distress.
- severe turbulence has injured passengers and urgent assistance is needed after landing.
- an emergency descent whist flying in controlled airspace when aircraft operating below your flight path might be threatened.
when can PAN PAN also be used?
used with respect to the safety of another aircraft o personnel.
