N3291
STCs that may be installed · 202
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 = '3021454'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '51627')
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.
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 = '3021454'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '51627')
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_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Airframe · Douglas DC3A-S4C4G
STC ST00165DEInstallation Of Oilamatic Preoiler system.STC ST00456DEInstallation of smokejumper side-facing restraint benches. STC SA4840NM must be installed prior. Limited to restraint bench s/n's 001 thru 030. STC SA4840NM must be installed.STC SA8075SWInstallation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER)STC SA1008WEInstallation of Poly-Fiber covering material.STC SA3-425Installation of one-piece windshield, electrically heated or bird-proof.STC SA2-491Aircraft fuselage modified to incorporate enlarged windows.STC SA02168AKInstallation of hourmeter airspeed switch. For unpressurized aircraft only. Pressurized aircraft must have pressurization system deactivated.STC SA18SWInstallation of carburetor adapter.STC SA2-1071Manufacture of alcohol under wing to fuselage fillet tanks, P/N 352581, to replace Douglas alcohol tanks P/N 5161344 or 5188619, and mounting bracket P/N 352573 replacing the Douglas brackets P/N 5161873-46, -48, -52, -54 and Douglas P/N 4161884 and 4161882.STC SA2-148Install aft baggage compartment support structure.STC SA2-193Rework exhaust system.STC SA2-282The exhaust tail pipe installed.STC SA2-51A 200 amp generator system installationSTC SA2-524Installation of R&L cockpit window.STC SA2-56The landing light mounting in each outer wing panel leading edge alteredSTC SA2-639Installation of Surface Combustion Heater, P/N A97A28 and related equipment.STC SA2-664Structural modification to nacelle aft of firewall to eliminate the exhaust trough cut out.STC SA2-708Installation of 200 amp generator system with over voltage control.STC SA2-84Fuselage structure modified R & L side to incorporate enlarged windows.STC SA2-868Installation of camera hole cut out in lower fuselage structure.STC SA2-98Installation of 300 amp generator system.STC SA247SWInstallation of Bendix Avia. Corp. (Eclipse-Pioneer) fuel flow system, transmitter 9100-5, indicator 6300 (100-1000 lbs. per hour).STC SA474SWInstallation of chairs and floor structure.STC SA604SWInstallation of fuel flow system.STC SA68SWInstalled a positive stop in the rudder system.STC SA2-194Installation of Collins AP-101 autopilot.STC ST00372DEInstallation of smokejumper equipment (Primary Cable Anchor Assembly, Horizontal Tether Anchor Assembly, Cargo Floor Anchor Assembly, Jump Door Handrail and Communications Guard Assembly).STC ST554CHInstall placards in cabin.STC SA2-926Installation of Fiberglass covering.STC SA00250LAInstallation of Pratt & Whitney R1830-92 or R1830-90D engines in pairs or intermixed. (DC-3 Series N2298C S/N 33201)STC SA1253GLInstall auxiliary cargo door.STC SA1734GLInstallation of freon air conditioning system.STC SA1756GLInstall cargo winch system.STC ST173CHInstallation of cockpit blower system. (DC-3 SERIES -TP67 turbine conversion per STC SA 4840NM)STC ST00094DEInstallation of a Sundstrand digital flight data recorder. (DC-3 SERIES TP67)STC ST00095DEInstallation of a Sundstrand MK-VI ground proximity warning system. (DC-3 SERIES TP67)STC SA4-1091Panorama windows.STC SA4-1099Panorama picture window.STC SA4-767Raised and panorama windows.STC SA1485CEInstallation of fire extinguisher system for the engines and/or cabin heater and/or aft fuselage baggage compartment.STC SA177SOInstallation of fabric attachment clips.STC SA3487SW-DInstallation of Century automatic flight system model Ak990 consisting of a Century 41 Autopilot/flight director with yaw damperSTC ST746SOInstallation of short engine exhaust stacks.STC SA1158WEInstallation of AVQ-75 distance measuring equipment.STC SA929WEInstallation of wing flap landing gear aural warning installation.STC SA1045GLInstallation of Shadin fuel flow indicating system.STC SA1739SOInstallation of shoulder harness provisions for pilot, co-pilot and observer.STC SA1991CEOperation on leaded and/or unleaded automotive gasoline.STC SA1351WEReplace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12)STC SA3-302Installation of Janitrol Series S-200 heater.