FAA-PMA
SS4 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.
SS4 is cataloged as TEST SET,SYNCHRO. It carries 10 NSN identities and cross-references to 27 related part numbers. An FAA PMA relationship is on file. The part appears on MCRL cross-reference data.
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177030-126, 325696, 7610238P279, 860946-6, 887392-5, A640770, A8812767-2, AN3108A14S5S, B770-346, BS757-91, BS765-336, BS770-346, HS13, M81793-SDDCAX0FAB51AB1, MILC5015, MS3108A14S5S, MS3108A14S5SC, MS3108R14S-2P, NTS119801TEMVV, PLQ200, S14, S14A, SS-4AR, SS-S-736, SS-S-736 TY2CLBST14, SS4-30, SS4K7
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