General:

If so equipped, the pilot of an aircraft experiencing a two-way radio communications failure shall operate the secondary radar transponder on identity (Mode A) Code 7600 and Mode C.

The pilot shall also attempt to contact any ATC facility and inform them of the difficulty and request they relay information to the ATC facility with whom communications are intended.

 

Communications Failure Prior To Entering NAT Oceanic Airspace:

If operating with a received and acknowledged oceanic clearance, the pilot shall enter oceanic airspace at the cleared oceanic entry point, level and speed, and proceed in accordance with the received and acknowledged oceanic clearance. Any level or speed changes required to comply with the oceanic clearance shall be completed within the vicinity of the oceanic entry point.

If operating without a received and acknowledged oceanic clearance, the pilot shall enter oceanic airspace at the first oceanic entry point, level and speed, as contained in the filed flight plan and proceed via the filed flight plan route to landfall. That first oceanic level and speed shall be maintained to landfall.

 

Communications Failure Prior to Exiting NAT Oceanic Airspace:

If cleared on filed flight plan route, the pilot shall proceed in accordance with the last received and acknowledged oceanic clearance including level and speed, to the last specified oceanic route point, normally landfall, then continue on the filed flight plan route. The pilot shall maintain the last assigned oceanic level and speed to landfall. After passing the last specified oceanic route point, the pilot shall conform with the relevant State procedures/regulations.

If cleared on other than flight plan route, the pilot shall proceed in accordance with the last received and acknowledged oceanic clearance, including level and speed to the last specified oceanic route point, normally landfall. After passing this point, the pilot shall conform with the relevant State procedures/regulations and rejoin the filed flight plan route by proceeding, via the published ATS route structure where possible to the next significant point ahead as contained in the filed flight plan. directly to the next significant point ahead of the track of the aircraft as contained in the filed flight plan. After passing this point conform with the relevant State procedures/regulations.