The FAA has published new guidance concerning nickel alloy engine (rotating) parts. Consistent with the new quality assurance procedures of 14 C.F.R. 21.137, PMA holders will be expected to work closely with their metal suppliers to ensure that smelting operations are performed correctly. Our informal inquiry among manufacturers suggests that many PMA manufacturers are purchasing their metals by specification number and then testing the materials using sampling techniques. They do not typically get involved in direct quality assurance oversight of smelters to ensure that they are smelting correctly. This appears to create a disconnect between the current standard practices and the FAA’s new guidance. Continue reading
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