F-35 manufacturer Lockheed Martin will retrofit early production lots of F-35Bs delivered to the U.S. Marine Corps with modified bulkheads to address cracking issues that came to light during durability testing of ground articles last fall. It will build redesigned bulkheads into the fighter beginning with low-rate production (LRIP) Lot 9, said Rear Adm. Randy Mahr, deputy program manager with the Pentagon’s F-35 joint program office (JPO).
“The repair for that bulkhead for the [F-35Bs] that are out there in the fleet is known, it’s understood, and we’ll be retrofitting LRIP Lots 1 through 7,” Mahr told the Navy League Sea-Air-Space conference on April 7.
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