Which situation requires an immediate evacuation?

• A. Turbulence with no injuries
• B. Medical emergency on board
• C. Ditching
• D. Loss of cabin pressure

Answer: (C)

The situation that requires an immediate evacuation is when the aircraft is ditching, landing on water. In a water landing, time is of the essence because staying inside the aircraft can quickly become deadly as the aircraft may sink or lose buoyancy. Passengers are directed to exit rapidly via doors or overwing exits and move onto life rafts or the surface as soon as possible, with slides often inflating into boats. This rapid egress maximizes chances of surviving in the open water.

Turbulence without injuries is managed by securing seat belts and following crew instructions rather than evacuating. A medical emergency on board may lead to priority landing or medical care on board, but not an automatic, immediate exit from the aircraft. Loss of cabin air triggers oxygen and a rapid descent to a safe altitude and landing, but evacuation is coordinated after the aircraft has landed or when it becomes necessary for safety, not during the descent itself.