Question 123 - IFR Communications - ATPL - Airline Transport Pilot license

Immediately return by the shortest route to the route indicated in the filed flight plan.
Maintain the present heading for 1 minute, then continue visually to the nearest suitable aerodrome.
Maintain the last assigned speed and level, or minimum flight altitude if higher, for the prescribed period, then rejoin the last acknowledged route as applicable.
Squawk 7700 and disregard the last acknowledged route clearance.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license