US Air Force Grounds F-35s It Just Declared Ready for War

A U.S. Air Force pilot conducts preflight checks inside an F-35A Lightning II before a training mission April 4 at Nellis Air Force Base, Nev., April 4, 2013. (U.S. Air Force photo by senior airman Brett Clashman)



On Aug. 2, the Air Force said 10 F-35s at Hill Air Force Base in Utah were ready for war. Forty-four days later, those planes have been grounded in the latest embarrassing setback for the most expensive project in Pentagon history.

The problem: “peeling and crumbling insulation in avionics cooling lines inside the fuel tanks,” Air Force officials said in a statement on Friday afternoon. “Engineers with the F-35 Joint Program Office and Lockheed Martin and Hill Air Force Base maintenance Airmen have conducted inspections of eight aircraft and are currently developing procedures to resolve or mitigate the issue prior to release of affected production aircraft to the field and the return of affected operational aircraft to flight operations.”

The grounding interrupts a general wave of progress for the $400 billion program, which made its debut at the Farnborough Air Show in England this summer and has been getting rave reviews from pilots. (In 2014, an engine fire caused the previous high-profile grounding and scotched the plane’s first planned trip to Farnborough.)

This is not a technical or design issue,” Michael Rein said in an email. “It is supply chain manufacturing quality issue. It will likely require depot-level maintenance to address the corrective actions for the 15 jets in the field.”

The problem only affects the A model of the F-35, not the Marine Corps’ short-takeoff-and-vertical landing planes or the Navy’s carrier-capable aircraft.

Full article: US Air Force Grounds F-35s It Just Declared Ready for War (Defense One)

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