During an aircraft emergency, which safety procedure should be followed?

The correct approach during an aircraft emergency is to execute forced landing procedures because this decision prioritizes the immediate safety of the aircraft and its occupants. Forced landing procedures provide a systematic approach to descending and landing the aircraft safely when it is not possible to land at the intended destination, often due to engine failure or other critical system issues. This action helps in managing the aircraft's descent, ensuring it is controlled and guided to a suitable landing area, which is essential during an emergency.

Initiating a passenger evacuation is a critical procedure but typically comes after the aircraft has safely landed. Performing a full systems check is generally not feasible during an urgent emergency, as time and safety are of the essence; it delays necessary actions that could prevent further escalation of the emergency. Contacting ground services immediately is important but would generally occur once the aircraft is stabilized or on the ground; safety procedures focus primarily on controlling the aircraft first.