STC SA3-404
FAA DRS lists SA3-404 as Current · Reissued, held by Sabreliner Aviation LLC, for Martin-Marietta 404. Recorded change: Installation of Sperry SP20 autopilot. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of Sperry SP20 autopilot.
SA3-404 identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Martin-Marietta 404. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Martin-Marietta 404 model, serial range, and configuration?
- 02Which part numbers, software versions, interfaces, and manual changes apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related avionics STCs
Installation of Landing System Sensor Units (GLSSU), dual CMA-5025 GPS Landing System (GLS) Control Panels, dual low profile high-speed WAAS GPS/SBAS/GNSSU antennas, LPV/LP Level of Service annunciator lights and ILS/DME-ILS/SLS switch lights.
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Installation of the RTA-44D VHG Data Radio System and/or the RTA-83B VHF Communications System.
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Installation of a Honeywell CAS-66A TCAS I and MFRD (Multi-Function Radar Display).
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ONE ONLY STC, SN # 11138: Installation of King Model KFC 300 Automatic Flight Control System (autopilot and flight director).
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