Pentagon grounds its entire fleet of F35 fighter jets

The US military temporarily grounded its entire fleet of F-35 fighter jets – used in Air Force, the Navy and the Marines – as a precautionary measure after a routine inspection detected a crack on an engine blade.

All F-35 flight operations have been suspended until the investigation is complete, the Pentagon said in a statement yesterday.

"It is too early to know the fleet-wide impact of the recent finding," it said, adding F-35 Joint Program Office is working closely with Pratt & Whitney and Lockheed Martin at all F-35 locations to ensure the integrity of the engine, and to return the fleet safely to flight as soon as possible.

The F-35 is the Pentagon's most expensive weapons program at a total estimated cost of nearly $400 billion.

The Pentagon said a routine engine inspection revealed a crack on an engine blade of the F-35 engine installed in F-35A aircraft AF-2 operating at Edwards Air Force Base, California.

Engineering teams are shipping the engine's turbine module and its associated hardware to Pratt & Whitney's Engine Facility in Middletown, Connecticut, to conduct more thorough evaluation and root cause analysis, it said.

The New York Times said the suspension of flights comes at an awkward time for the military, which is facing automatic budget cuts that could slow its purchases of the planes.

The F-35 II is a family of single-seat, single-engine, fifth generation multirole fighters under development to perform ground attack, reconnaissance, and air defense

missions with stealth capability.

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