If a pilot deviates from ATC clearance due to an emergency, what should they do afterward?

When a pilot deviates from ATC clearance due to an emergency, the correct procedure is to inform ATC and get an amended clearance. This is essential for several reasons.

First and foremost, notifying ATC ensures that air traffic controllers are aware of the situation and can adjust their traffic management accordingly. This communication helps maintain safety in the airspace by allowing ATC to reroute other aircraft if necessary, thus preventing potential conflicts and ensuring the safe integration of all aircraft, including those in emergency situations.

Secondly, obtaining an amended clearance provides the pilot with updated instructions that can assist flying safely as they navigate the emergency. This might involve changes in altitude, heading, or other essential factors needed to address the situation properly.

Other actions, such as continuing to fly without informing ATC or filing a report after landing, could compromise safety by leaving ATC unaware of the aircraft's status and intentions. Regaining the last given altitude before reporting may not be feasible or safe depending on the nature of the emergency. Thus, the priority should always be clear communication with ATC to ensure all aircraft are managed safely and effectively.