FAA Adapts Maintenance Requirements For New Part Used In 787 Battery Fix

By John Croft
Source: Aviation Daily

“FAA arrived at a 21-flight-cycle MMEL relief with the following logic: In a worst-case scenario, the indicator fails on the first flight after the mandatory maintenance 14-cycle inspection has been completed,” the FAA tells Aviation Week. “After inspection, 13 flight cycles later, it is discovered the indicator has failed. If the Fault Isolation Manual process determines it is a faulty indicator, the 21 flight cycles Boeing requested for their MMEL relief falls within the 35 flight cycles Boeing has already tested.”


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