FAA-PMA
23-661 is an FAA-PMA part held by Wencor LLC (PMA PQ1370NM) — approved as a replacement for 54776 on Boeing 747SP series, 747SR series, 747-100 series, 747-100B series, 747-100B SUD series, 747-200B series, 747-200C series, 747-200F series, & 747-300 series · Current, Nov 2017.
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.
23-661 is cataloged as WHEEL,ABRASIVE. It carries 1 NSN identity and cross-references to 3 related part numbers. FAA PMA approval is on file from Wencor LLC. An estimated 194 aircraft of the approved type are registered in the US. The part appears on MCRL cross-reference data.
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