FAA-PMA
21657 is an FAA-PMA part held by Ontic Engineering & Manufacturing Inc. (PMA PQ1398NM) — approved as a replacement for 60B40085-5 on Boeing 737-700 Series, 737-700C Series, 777-200 Series, 777-200LR Series, 777-300 Series, 777-300ER Series, 777F Series · Current, May 2015.
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.
21657 is cataloged as RESISTOR,VARIABLE,WIRE WOUND,NON. It carries 9 NSN identities and cross-references to 5 related part numbers. FAA PMA approval is on file from Autronics Corp. An estimated 122 aircraft of the approved type are registered in the US. The part appears on MCRL cross-reference data.
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