What should be done with the cabin door in an emergency following engine failure just after takeoff?

In the event of engine failure shortly after takeoff, the appropriate action regarding the cabin door is to unlatch it. This course of action enhances safety by ensuring that the door can be easily opened upon landing or if the aircraft needs to be evacuated quickly. Unlatching the door prepares the aircraft for a potential emergency landing and allows for immediate access to exit the aircraft if necessary. It’s crucial for the pilot to be prepared for a rapid evacuation in emergencies, and having the door unlatched facilitates this.

Locking the door, removing it, or ignoring it would not be advisable. A locked door could hinder evacuation efforts, removing it is impractical and could compromise the structural integrity of the aircraft, while ignoring it would fail to prepare the pilot and passengers for an emergency evacuation.