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What happens if a plane engine fails during flight?

Published in Aircraft Emergency Procedures 2 mins read

If a plane engine fails during flight, the aircraft's performance is affected, but it doesn't necessarily mean a crash. Modern airplanes are designed with multiple safety systems and procedures to handle such situations.

Here's a breakdown of what generally occurs:

  • For Multi-Engine Aircraft:

    • Continued Flight: Most commercial airplanes have multiple engines. If one engine fails, the remaining engine(s) can usually provide enough thrust to maintain flight and reach a suitable airport for landing.
    • Pilot Procedures: Pilots are rigorously trained to handle engine failures. They will follow established procedures, which include:
      • Maintaining airspeed and altitude.
      • Identifying the failed engine.
      • Shutting down the failed engine to prevent further damage.
      • Adjusting the aircraft's configuration for single-engine flight.
      • Communicating with air traffic control.
    • Controlled Landing: The pilots will coordinate with air traffic control to divert to the nearest suitable airport for landing. The landing may require slightly different techniques than a normal landing, but it's a routine procedure for trained pilots.
  • For Single-Engine Aircraft:

    • Glide Capability: If a single-engine plane experiences engine failure, it will begin to glide. As stated in the reference, "the plane becomes a glider."
    • Pilot Skill is Crucial: The pilot must act quickly and decisively to:
      • Establish the best glide speed to maximize distance.
      • Identify a suitable landing site.
      • Attempt to restart the engine (if appropriate).
      • Communicate with air traffic control (if possible).
    • Emergency Landing: The pilot will perform an emergency landing, ideally on a runway or open field. The reference highlights the importance of pilot skill in this situation, noting, "there is only one chance to make a successful landing. No go-around option…"

In Summary:

Scenario Outcome Key Factors
Multi-Engine Fail Continued flight on remaining engines, diversion to nearest airport, and controlled landing. Number of engines, pilot training, and aircraft performance capabilities.
Single-Engine Fail Aircraft glides, requiring the pilot to identify a landing site and perform an emergency landing. Pilot skill, glide capabilities of the aircraft, availability of landing sites, and potential for engine restart.

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