FAA-PMA
A PMA part is approved for the specific eligibility listed on its FAA record; whether it may go on a particular aircraft, engine or component is the installer's determination from that record and the eligibility list. A part-number match alone does not establish eligibility. Source: FAA DRS PMA database, refreshed weekly. Data, not advice.
30-400 is cataloged as WASHER,LOCK. It carries 2 NSN identities and cross-references to 3 related part numbers. The part appears on MCRL cross-reference data.
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