Subchapter 9.8 – Complete Emergency Scenario: Communication Failure with Weather

Here is a realistic scenario that combines multiple special situations:

You are flying from Geneva to Zurich in a Diamond DA40. You are at Flight Level 120 en route, and your clearance is "cleared Geneva to Zurich, Flight Level 120, after Zurich expect Flight Level 150, maintain present speed, departure frequency 120.4, squawk 4521."

You are 40 minutes from Zurich. You check weather on your moving map and see a line of thunderstorms developing northeast of your track. You also notice your radio has become intermittent—ATC is breaking up.