Which one of the following radiotelephony messages should be given the highest priority?
Refer to figure.
QDM. Magnetic bearing to a station.
ICAO Annex 10 Volume II
5.1.8 Categories of messages
The categories of messages handled by the aeronautical mobile service and the order of priority in the establishment communications and the transmission of messages shall be in accordance with the following table.
Message category and order of priority signal | Radiotelephony signal |
|
MAYDAY |
|
PAN, PAN or PAN, PAN MEDICAL |
|
___ |
|
___ |
|
___ |
|
___ |
'Turn left' → Flight safety message
'Wind 300 degrees, 5 knots' → Meteorological message
'Request QDM' → Communications relating to direction finding
'QNH 1013' → Meteorological message
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Austro Control