When does a multi-engine aircraft require a life raft due to engine failure?

The need for a life raft in a multi-engine aircraft due to engine failure is typically determined by the distance from shore. In this scenario, the requirement arises when the aircraft is operating more than 200 nautical miles from the nearest shore. This regulation is based on safety protocols, which ensure that in the event of engine failure, especially in single-engine scenarios, there is a safe means of aiding survival in the ocean or isolated areas.

Choosing this distance allows for adequate safety provisions, ensuring that if an engine fails, the aircraft can reach a suitable location or that passengers and crew have the means to survive until rescue operations can reach them. Considerations for distance, such as 100 or 30 nautical miles, do not align with the standard regulations for life raft requirements, which have stricter thresholds for safety reasons. The stipulation of being unable to maintain level flight or other distances, while they address safety, do not specifically dictate the necessity of a life raft as clearly as the 200 nautical mile guideline does.