Faulty wiring has caused 15 Lockheed Martin F-35A’s to be grounded in the US, while 42 aircraft currently in production in Fort Worth are affected by the same problem. The news was made public solely by the Royal Norwegian Air Force, which saw two of its four F-35s stationed at Luke Air Force Base in Arizona, affected by the problem.
The state-of-the-art and highly expensive F-35 uses its fuel tanks as part of its on-board cooling system. Several cooling lines have been installed inside the tanks to allow cooling liquid for the aircraft’s avionics and other systems to pass through. The lines are covered in insulating materials that in some cases have been found to decompose, leaving residue in the fuel.
The issue first came to light during inspection of a US aircraft at Luke, following which 14 more F-35s were found to be affected by the same problem. Among those are two jets that Norway received from Lockheed Martin earlier in 2016, leading to a decision by Norwegian authorities to temporarily suspend flight operations with these aircraft pending corrective measures.
According to the Norwegians the problem is not a design flaw, but instead is caused by a supplier using improper materials and improper sealing techniques for these specific parts. “I expect Lockheed Martin to identify the appropriate measures to correct this issue, and that they implement these as quickly as possible, says Major General Morten Klever, the director of the Norwegian F-35 Program Office.”
Lockheed Martin appears to have no choice, since an additional 42 jets currently on the production line have received parts from the same provider, including three Norwegian aircraft scheduled for delivery early next year.
Norway plans to procure up to 52 F-35A, and has so far received four aircraft. Beginning in 2017, Norway plans to receive six aircraft annually, and the F-35 will begin taking over missions from the current F-16-fleet in 2019. As of September 2016 more than 200 F-35s have been delivered, including test aircraft, which have completed more than 68 000 flight hours, including roughly four hundred hours with Norwegian F-35s.
© 2016 Airheadsfly.com editor Elmer van Hest