F-35 Engine To Undergo Fleetwide Retrofit

f135 stovl engine on test

F135 STOVL engine.

Credit: Pratt & Whitney
The F-35 Joint Program Office (JPO) has issued a directive recommending that all Pratt & Whitney F135s powering the global fleet of Lockheed Martin F-35s be retrofitted within 90 days with a fix for a vibration problem that caused an aircraft to crash on Dec. 15. While no flight restrictions are...
Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

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