N552AT

STCs that may be installed · 25

Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do. In force first, then newest.

Query with SQL
duckdb -csv -c "SELECT m.matched_by, s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
  FROM (
    SELECT stc_number, min(side) AS side, arg_min(matched_by, side) AS matched_by, arg_min(matched_model, side) AS matched_model
    FROM (SELECT stc_number, 1 AS side, 'airframe' AS matched_by, matched_model FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet' WHERE aircraft_model_code = '05623O1'
      UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '42397')
    GROUP BY stc_number
  ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
  ORDER BY m.side, s.status = 'Current' DESC, s.status_date DESC, s.stc_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Engine · Lycoming O-235-C

STC SE04651CHTo allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22Swift Fuels LLCSTC SE00825WIInstallation of Specialty Products Spin-on oil filter on Lycoming Engines.B & C Specialty Products Inc.STC SE2932SWInstall carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.Alcor LLC · Lists O-235 SeriesSTC SE208SOInstallation of ice indicator in the carburetor.LegacySTC.com · Lists O-235 SeriesSTC SE04349CHInstallation of SureFly electronic ignitionSureFly Partners Ltd.STC SE02352CHInstallation of Challenger cleanable oil filter assemblyChallenger Aviation Products Inc.STC SE2393CEInstallation of B&C Speciality Products lightweight (10.2 pounds) engine starter, part number BC-315-100-1 (12 volts) or part number BC-315-100-3 (24 volts)B & C Specialty Products Inc. · Lists O-235 SeriesSTC SE03232CHInstallation of Engine Preheat Kit p/n TA2925-1 for 115 volt applicationHartzell Propeller Inc.STC SE04577CHInstall an electronic engine ignition systemElectroair Acquisition CorpSTC SE01966WIUse of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft enginesGeneral Aviation Modifications Inc.STC SE00218NYReplacement of Lycoming starter with SKY-TEC 12 volt starter installed.Hartzell Engine Technologies, LLC · Lists O-235 SeriesSTC SE00226NYReplacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter.Hartzell Engine Technologies, LLCSTC SE00357NYReplacement of Lycoming starter with SKY-TEC 24-volt starter installed.Hartzell Engine Technologies, LLC · Lists O-235 SeriesSTC SE1779NMInstallation of Precise Flight, Inc. Standby Vacuum System SVS IIIPrecise Flight IncSTC SE5743NMIntallation of adapter for externally mounted oil filter.Aviation Development CorporationSTC SE09492SCInstallation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013.Exxon Company USA · Lists O-235 SeriesSTC SE00350SEInstallation of sump mounted chip detector.Aviation Development CorporationSTC SE8023SWInstallation and usage of AEROSHELLShell Development Co · Lists O-235 SeriesSTC SE452NEInstallation and usage of 'Mobil AV 1' aviation oil.Mobil Research & Development Corp · Lists O-235 SeriesSTC SE5879SWUse of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP.Phillips Petroleum Co · Lists O-235 SeriesSTC SE5924SWInstallation of stainless steel replacement exhaust studs on AVCO engines.Perrigo & Steele Aircraft Engr Company · Lists O-235 SeriesSTC SE1976SWManufacture of new cylinder barrels and rebarreling with original cylinder head.Gary Aerospace Corp · Lists O-235 SeriesSTC SE5791SWInstallation of any or all engine components parts or modifications on Avco 0-235 series engines.Airmotive Engineering Corp · Lists O-235 SeriesSTC SE1445SOUse of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines.ProTec · Lists O-235 SeriesSTC SE128NEUse of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines.AMS/OIL · Lists O-235 Series
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