FAA-PMA
550 8 is an FAA-PMA part held by Rockwell Collins Inc. (PMA PQ0390NM) — approved as a replacement for 5508 on Mcdonnell Douglas DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32F, DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81, DC-9-82, DC-9-83, DC-9-87, MD-88 · Current, Jun 2016.
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.
550 8 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 Aviation Products Systems Inc. An estimated 329 aircraft of the approved type are registered in the US. The part appears on MCRL cross-reference data.
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