How jet engines are certified: bird strikes, blade-off tests and water ingestion
Commercial turbofan engines must pass a series of ground tests before powering passenger flights, with the FAA and EASA setting the baseline requirements. The tests are designed to confirm that extreme failures stay contained within the engine.

Before a commercial turbofan powers a passenger aircraft on a revenue flight, it must survive ground tests designed to push mechanical components past their breaking points.
In the United States, the Federal Aviation Administration sets baseline requirements under 14 CFR Part 33. The European Union Aviation Safety Agency enforces equivalent criteria through its CS-E standards.
Engine certification does more than show a power plant runs efficiently in normal conditions. It also ensures that catastrophic mechanical failures stay contained within the engine structure when extreme events occur.
Sources
- simpleflying.comBird Strikes, Blade-Offs & Water Walls: How Jet Engines Get Certified In 2026