Cessna 421A

STCs that may be installed · 232

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 ('2076012')
    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.

STC SA1007NWInstallation of a low thrust detector system.Engine-Out Warning Systems, LLCSTC SA2780SWInstallation of Hoskins Model CFS-2000, -20001, or FT-2000 fuel flow indicating system.Sandia Aerospace CorporationSTC SA00749ATModification of flush type fuel caps for installation of a locking cylinder and keeper. (1964 and subsequent)Aero Trim, IncSTC SA5925NMInstallation of oil pressure/temperature instrument.Electronics InternationalSTC SA5924NMInstallation of RPM instrument.Electronics InternationalSTC SA8705SWInstallation of R25V0N Alternator Control Unit or R2510N Alternator Control Unit or V2510A Over Voltage Sensor.Tovya Group, IncSTC SA7126SW-DInstallation of S-TEC System 65 two axis automatic flight guidance system, Model ST-379.S-TEC CorporationSTC SA00329SEInstallation of vortex generators on wings and vertical stabilizer.Aeronautical Testing Service Inc.STC SA14GLInstallation of detachable lead strap propeller deicers.BF Goodrich AerospaceSTC SA00404WIInstallation of a starter engagement indication system.Miller Aviation, IncSTC SA00061LAInstallation of JPI digital tachometer.J P InstrumentsSTC SA09060SCInstall Teledyne Continental GTSIO-520-D engine.Texas Skyways IncSTC SA8890SW-DInstallation of S-TEC System 55 two axis automatic flight guidance system, Model ST-559, with optional automatic electric trim system.S-TEC CorporationSTC 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)Capehart Industries, IncSTC SA5656NMInstallation of burglar alarm system.Thompson Harold SSTC SA4745NMInstallation of Lifeport Patient Loading and Support System.LifePort IncSTC SA5926NMInstallation of manifold pressure instrument.Electronics InternationalSTC SA1626NM PAGE 1Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)Electronics InternationalSTC SA1814CEInstallation of Total Flood Corporation fire extinguishing system in the cabin and/or a fire extinguishant system and/or detection system in the engine compartmentsAdvanced Aircraft Extinguishers LtdSTC SA5159NMInstallation of chip detector system.Northwest Aircraft Inc · Lists 421 SeriesSTC SA2844CEInstallation of a plastic cap enclosure over the anti-collision strobe light system.Air Transport IncSTC SA5361SW-DInstallation of S-TEC System 60 two axis automatic flight guidance system, Model ST-237, with optional automatic electric trim system.S-TEC CorporationSTC SA3228WEInstallation of Silver Instruments Fueltron IIIG or IIIP digital fuel flow indicating system.Arnav Systems IncSTC SA1570GLInstallation of on-board engine analyzer system.Masten Products IncSTC SA1897WEInstallation of a seventh seat in aft baggage compartment.Aviation Fabricators IncSTC SA2RMInstallation of a seventh seat in aft baggage compartment.Aviation Fabricators IncSTC SA1326CEInstallation of Avcon Industries standard stretchers, P/N 4001--201 or 4001-202 and P/N 4001-301 or 4001-302 back adjustable stretcher.Med-Flite of Midamerica, IncSTC SA2350NM PAGE 1Installation of Electronics International Inc digital carburetor/outside air temperature gaugesElectronics InternationalSTC SA4302NMInstallation of Electronics Int'l digital automatic engine analyzer.Electronics InternationalSTC SA4755NMInstallation of Spoilers, Inc. electric/hydraulic operated wing spoiler system.Spoilers IncSTC SA4024NMReplace the standard Cessna oil drain plug with a Bogert Aviation quick drain.Bogert AviationSTC SA3862NM PAGE 1Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.Electronics InternationalSTC SA128GLReplace existing asbestos or bellows exhaust seal with slip joint.Aircraft Welding CoSTC SA2063SOInstallation of stretcher system.National Jets, IncSTC SA660WEInstallation of HRD-type fire extinguishing system. (AND STC SA111WE)Pacific ScientificSTC SA3283NMInstallation of ARNAV Systems FC-10/FT 10 digital fuel flow indicating system.Arnav SystemsSTC SA2721NMInstallation of a turbocharger bypass exhaust elbow.Heliarc Welding Service Inc.STC SA169RMInstallation of exhaust stacks.Heliarc Welding Service Inc.STC SA968SWMitchell automatic flight system AK279 consisting of Century III autopilot with optional automatic pitch trim, radio couplers, automatic aileron stabilizer.Century Flight Systems IncSTC SA2190NM PAGE 1Installation of electronics International Digital Volt/Amp Gauges and Accessories.Electronics InternationalSTC SA607GLInstallation of a Shadin Company 910502, 910504, or 910514 fuel flow indicating system.Shadin AvionicsSTC SA5426SWInstallation of Texas Instruments Model TI 9100 Loran C navigator.Texas Instruments, IncSTC SA1867CEDC powered windshield installation. (421C EXCEPT 421C0801 THRU 421C1400)Wilco IncSTC SA1515NMCrossover exhaust pipe assembly.Heliarc Welding Service Inc.STC SA2656SWAddition of Hydro Seal Fluid Additive to nose and main gear shock struts.Granville Lasseter/dba Granville's Aircraft Strut SealantSTC SA1210CEInstallation of Hanlon & Wilson exhaust systems, P/N 8108-59 and P/N 8109-59 or P/N8108-159 and 8109-159.Hanlon & Wilson, IncSTC SA2905SWInstallation of AVICON TZ1 fuel flow totalizer systemAvicon Development CorporationSTC SA2906SWInstallation of AVICON AF1 fuel flow processor.Avicon Development CorporationSTC SA2386SWInstallation of S.A.F.E., EGT, CHT Systems.Avicon Development CorporationSTC SA1393CEInstall forward baggage door warning system.Wells Aircraft, Inc
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