FAA-PMA
SL-4 is an FAA-PMA part held by Hartzell Propeller LLC (PMA PQ2040CE) — approved as a replacement for Modification Article on Lycoming Division Avco Corporation O-290 · Current, Aug 2025.
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.
SL-4 is cataloged as PLUNGER,QUICK RELEASE. It carries 5 NSN identities and cross-references to 29 related part numbers. An FAA PMA relationship is on file. The part appears on MCRL cross-reference data.
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047-1043-20, 047-1047-20, 113-34224-SC, 12Z12124-1, 16-34H-M, 16-34H-M-DC, 160283, 207A441PC3, 30150, 52465, 8705164, A-A-51151, A-A-51186, AA51186-2A5B, HC-33, HC-33-DC, P413, S54, SL-4-DC, SL-4-M, SL-4-M-DC, TC-77, TC-77-M, TC-77-M-DC, TCR-257-M-DC, U--141-M, U-141D, US-500, Z10-0016-004
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