FAA-PMA
SS-4 is an FAA-PMA part held by Hartzell Propeller LLC (PMA PQ2040CE) — approved as a replacement for Modification Article on Lycoming Engines O-235 · 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.
SS-4 is cataloged as PIN,STRAIGHT,HEADLESS. It carries 5 NSN identities and cross-references to 13 related part numbers. An FAA PMA relationship is on file. The part appears on MCRL cross-reference data.
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13033991, 2915, 411628-9, 4H5128, 547A002915, 820-6896275PCSS-4, A1-13, A547-473, DAA7278G306-001, G2-11, S2-13, S4008Y-G2-011, SS-4-40
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