Cessna 421
STCs that may be installed · 248
In force first, then newest. The registry doesn’t record which STCs an aircraft has.
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
WHERE aircraft_model_code IN ('2076010')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY 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 s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
WHERE aircraft_model_code IN ('2076010')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY 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.
STC SA00709LAInstallation of control wheel. Includes provisions only for a push-to-talk (PTT) switch. Separate FAA approval of PTT switch is required.STC SA1401GLInstall air ambulance conversion.STC SA802NEInstallation of Cessna SK310-114-0 electric windshield heated panel installation kit.STC SA3721SWInstall vacuum pump cooling shroud.STC SA5878SWInstallation of range-marked EGT, CHT, oil temperature, and pressure gauges.STC SA2687NMInstallation of Truboplus/ Electronics Int'l gauges and switches.STC SA00804SEInstallation of an engine failure indicator system, also referred to as a 'low Thrust Detector system.'STC SA09472SCModifications are only applicable to air conditioner systems.STC SA3003WEInstallation of recognition light assembly on horizontal stabilizerSTC SA00833WIInstallation of a seat headrest.STC SA09517SCInstallation of a children's critical care childs stretcher assembly, p/n 100-1.STC SA00537SEInstallation of vortex generators on the wing and rudder surfaces, and installation of nacelle strakes.STC SA5362SW-DInstallation of S-TEC yaw damper system, Model ST-238.STC SA8524SW-DInstallation of a Century Automatic Flight System, Model AK1047 consisting of a /Century 2110/2130/2131/2150/2151 autopilot.STC SA1007NWInstallation of a low thrust detector system.STC SA2780SWInstallation of Hoskins Model CFS-2000, -20001, or FT-2000 fuel flow indicating system.STC SA00749ATModification of flush type fuel caps for installation of a locking cylinder and keeper. (1964 and subsequent)STC SA5925NMInstallation of oil pressure/temperature instrument.STC SA5924NMInstallation of RPM instrument.STC SA487CEInstallation of windshield wipers.STC SA00228NYInstallation of Sky Harbour Aircraft Refinishing Ltd Ice Damage Prevention Plates.STC SA157NEInstallation of Graphic Engine Monitor System Model GEM-602 S/N 403 and GEM-603 S/N001126and subsequent.STC SA8705SWInstallation of R25V0N Alternator Control Unit or R2510N Alternator Control Unit or V2510A Over Voltage Sensor.STC SA7126SW-DInstallation of S-TEC System 65 two axis automatic flight guidance system, Model ST-379.STC SA00329SEInstallation of vortex generators on wings and vertical stabilizer.STC SA14GLInstallation of detachable lead strap propeller deicers.STC SA00404WIInstallation of a starter engagement indication system.STC SA00061LAInstallation of JPI digital tachometer.STC SA09060SCInstall Teledyne Continental GTSIO-520-D engine.STC SA8890SW-DInstallation of S-TEC System 55 two axis automatic flight guidance system, Model ST-559, with optional automatic electric trim system.STC SA8922SWInstallation of replacement Ultimate Engine Oil Filter for Textron Lycoming and Teledyne Continental engines. (411 S/N 000 THRU 0126, S/N 0127 AND UP) (T188C S/N 03474 AND UP) (206 S/N 05030 AND UP) (207 S/N 05227 AND UP) (T207 S/N 05227 AND UP) (P21 0 SERIES S/N 278 AND UP) (180 S/N 53087 AND UP) (210 S/N 63373 - 63375 AND UP) (B19 SPORT)STC SA5656NMInstallation of burglar alarm system.STC SA4745NMInstallation of Lifeport Patient Loading and Support System.STC SA5926NMInstallation of manifold pressure instrument.STC SA1626NM PAGE 1Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)STC SA1814CEInstallation of Total Flood Corporation fire extinguishing system in the cabin and/or a fire extinguishant system and/or detection system in the engine compartmentsSTC SA5159NMInstallation of chip detector system.STC SA2844CEInstallation of a plastic cap enclosure over the anti-collision strobe light system.STC SA5361SW-DInstallation of S-TEC System 60 two axis automatic flight guidance system, Model ST-237, with optional automatic electric trim system.STC SA3228WEInstallation of Silver Instruments Fueltron IIIG or IIIP digital fuel flow indicating system.STC SA1570GLInstallation of on-board engine analyzer system.STC SA1897WEInstallation of a seventh seat in aft baggage compartment.STC SA2RMInstallation of a seventh seat in aft baggage compartment.STC SA1326CEInstallation of Avcon Industries standard stretchers, P/N 4001--201 or 4001-202 and P/N 4001-301 or 4001-302 back adjustable stretcher.STC SA2350NM PAGE 1Installation of Electronics International Inc digital carburetor/outside air temperature gaugesSTC SA4302NMInstallation of Electronics Int'l digital automatic engine analyzer.STC SA4755NMInstallation of Spoilers, Inc. electric/hydraulic operated wing spoiler system.STC SA4024NMReplace the standard Cessna oil drain plug with a Bogert Aviation quick drain.STC SA3862NM PAGE 1Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.STC SA128GLReplace existing asbestos or bellows exhaust seal with slip joint.
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