During an IFR flight in IMC conditions, the pilot suspects a comms equipment failure. What actions should he/she take?
(1) Make two blind transmissions on the frequency in use stating your intentions
(2) Divert from your current track by 45 degrees for x minutes, and return to track according to flight plan
(3) Land at the nearest suitable airfield
(4) Continue to destination as per flight plan and commence an approach as close as possible to last EAT
Refer to figure.
Note: Under the latest Standardised European Rules of the Air (SERA), in the event of lost comms, there is a new squawk code:
- VFR = Squawk 7600
- IFR and continuing with your IFR flight – even if you’re in VMC = Squawk 7600
- IFR in VMC and you decide to land at the nearest suitable airport instead of continuing the flight = Squawk 7601 This new code informs ATC that you are diverting and so they can plan your separation.
ICAO Annex 10, Volume II
5.2.2.7.1.2 If the attempts specified under 5.2.2.7.1.1 fail, the aircraft station shall transmit its message twice on the designated channel(s), preceded by the phrase “TRANSMITTING BLIND” and, if necessary include the addressee(s) for which the message is intended.
Depending on whether your are flying in VMC or in IMC, different procedures shall be followed. When the IFR flight in flown under IMC, the pilot should:
- Follow the flight plan to destination and enter the hold at the designated navigation aid.
- Commence the approach as close as possible to the last acknowledge expected approach time (EAT). If no EAT has been received and acknowledge, commence the approach as close as possible to the flight plan ETA.
- Complete a normal instrument approach. If possible land within 30 minutes of the latest EAT or flight plan ETA, whichever is later.
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