DRILL,TWIST
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550 9 is cataloged as DRILL,TWIST. It carries 1 NSN identity and cross-references to 7 related part numbers. FAA PMA approval is on file from Acurex Corporation. An estimated 233 aircraft of the approved type are registered in the US. The part appears on MCRL cross-reference data.
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FAA-PMA
PMA PQ3417CE. Approved as a replacement for 5509 on The Boeing Company DC-9-31 (Panel, Compressor Calorimeter) · Current, Nov 2020.
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A PMA part is approved for the specific eligibility listed on its FAA record; whether it may be installed on a particular aircraft, engine or component is the installer's determination. This page states the FAA record and the listings on PartsAndPlanes.
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