N20821

STCs that may be installed · 400

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 = '7101820'
      UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '41506')
    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.

Airframe · Piper PA-18-135

STC SA4618NMFabrication and installation of P/N 3166-1 main landing gear cabane vee assembly.F Atlee Dodge Aircraft ServiceSTC SA4621NMFabrication and installation of P/N 3164-1 main landing gear shock strut assemblies.F Atlee Dodge Aircraft ServiceSTC SA4051NMInstallation of replacement aft fuselage tail section with Univair repair section U-12183-TS.Univair Aircraft CorporationSTC SA4606NMInstallation of main landing gear safety cable kit.F Atlee Dodge Aircraft ServiceSTC SA1337GLInstall Aero Ski Manufacturing Co., Inc., Model R2800 Retractable Skis.Aero Ski Manufacturing Co IncSTC SA3862NM PAGE 1Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.Electronics InternationalSTC SA3626NMApplication of polyurethane finishing system.Talkeetna Aero Svcs, IncSTC SA2303NMInstallation of header tanksF Atlee Dodge Aircraft ServiceSTC SA2338NMInstallation of SWS-11000 Tundra tires, wheels, and hubs.Schneider Richard JSTC SA2733NMInstallation of wing assembly.Univair Aircraft Corporation · Lists PA-18 SeriesSTC SA1455NMInstallation of a flame proof auxiliary heater-dryer, Model12-1600.Thermal, IncSTC SA4-302Installation of BN-1 propeller spinner.ACS Products Co, Inc · Lists PA-18 SeriesSTC SA2307NMInstallation of hydraulic ski- brake assembly.Novak Stephen N · Lists PA-18 SeriesSTC SA2190NM PAGE 1Installation of electronics International Digital Volt/Amp Gauges and Accessories.Electronics InternationalSTC SA1351WEReplace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12)Ceconite IncSTC SA1678NMInstallation of replacement wing ribs.Heald Ernest JSTC SA715ALInstallation of Schneider Model SWS-4000 main wheel skis and Schneider Model SWS-1000 tail wheel skis.Schneider Richard J · Lists PA-18 SeriesSTC SA2127WEInstallation of Madras Air Service Model 104 wing tips.Madras Air ServiceSTC SA334SWInstallation of InterAv Alternator.InterAv, IncSTC SA4RMInstallation of modified landing gear, Cleveland P/N 40-84 wheels and P/N 30-41 brakes.Univair Aircraft Corp · Lists PA-18 SeriesSTC SA293ALInstallation of Stoddard improved brake system.Univair Aircraft CorpSTC SA99ALInstallation of six-inch wheels and brakes.Univair Aircraft CorpSTC SA1646CEReplacement of bushing type pulley pulley in aileron control system.Hetrick Aircraft, IncSTC SA703ALInstallation of skis.F Atlee Dodge Aircraft Service · Lists PA-18 SeriesSTC SA641ALFabricate front wing spar butt attachment repair fitting.Center Clinton CSTC SA638ALFabricate rudder mounted strobe light support bracket.F Atlee Dodge Aircraft ServiceSTC SA624ALInstall fiberglass wing tip assembly.Charles C CenterSTC SA589WEFull flow oil filter F-94056 and F-94056-12 with element E-3560 MEL 800.Worldwide Filter CorpSTC SA490ALInstallation of leading edge cuff.Center Charles CSTC SA1033EAReplace steel oil cooler lines with Aeroquip type 303-8 hose using AN-823-8D elbows, AN-816-8D nipples and AN-321-8 hose fittings.Thompson Walter SrSTC SA540ALInstallation of modified landing gear with main gear legs lengthened 6 inches.Hendrick David M. · Lists PA-18 SeriesSTC SA69NWInstallation of Matney's engine charge air-air filter assembly. (AA-1B, AA-1, AA-1A 1969 AND ON) (AA-5 1972, 1973 AND 1974 ONLY)Matney D H · Lists PA-18 SeriesSTC SA630WEInstallation of oil filter assemblies. (NAVION A AND B with optional engine)Nelson FilterSTC SA526ALBuild up 1-1/4-inch axle to 1-1/2-inch axle to install Celveland wheel and brake.Robek Bill · Lists PA-18 SeriesSTC SA105NWMounting and wiring for occasional installation and use of Barnes Engineering Company airborne fire spotter system.State of WashingtonSTC SA489ALInstallation of modified dog leg brace baggage compartment.Stoddard Aero ServiceSTC SA292ALIncreased gross weights to PA-18-150 weights and C.G. envelope. Note: Airplanes must have Lycoming O-320 engine installed except, the PA-18-135 or PA-18A-135 for which the engine change is optional.Ellis W T & Borer M RSTC SA2468WEUse of GCA-600 axle adapter assembly for installation of Cleveland Model 40-84A wheels and Model 30-41 brakes.Ken BemisSTC SA894WEInstallation of Lycoming O-320-A2B engine and Sensenich M74DM-56 propeller.Flint Sam BSTC SA279ALInstallation of McCauley 1A175/GM propeller on -135 models listed and installation of McCauley 1A175/GM8241 through GM 8244 on the -150 models listed.M R Borer Aircraft SvcSTC SA4ALInstallation of auxiliary wing fuel tanks.F Atlee Dodge Aircraft Service · Lists PA-18 SeriesSTC SA324CEManufacture hitch and bracket. Install tow hitch.Stubben-McCandless · Lists PA-18 SeriesSTC SA425ALInstallation of removable seat back support.M R Borer Aircraft Svc · Lists PA-18 SeriesSTC SA400ALConversion of 4-inch wheels and brakes to 6-inch wheels and brakes.Jake BryantSTC SA2105WEInstallation of Model EGT-3 exhaust gas temperature monitor(with rising temperature alarm). (DC-6B (NAVY R6D-1Z) 680)K S Avionics, IncSTC SA5-7Install framing and seat in baggage compartment.M R Borer Aircraft SvcSTC SA136ALInstallation of Lycoming O-320 engine.M R Borer Aircraft SvcSTC SA4-254Hartzell HC82XG-6/7636D-4 propeller Lycoming 70385 dual drive assembly, Woodward 210115 single acting governor and J-6230-1 lord mount assembly.Belotti Ellen · Lists PA-18 SeriesSTC SA1177WEWECO carburetor temperature monitor.Winnen Richard P · Lists PA-18 SeriesSTC SA141ALRemoval of agricultural hatch.Jake Bryant · Lists PA-18 Series
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