Cessna 421C
STCs that may be installed · 258
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 ('2076016', '2076017')
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 ('2076016', '2076017')
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 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 SA4068NMInstallation of emergency medical system.STC SA4302NMInstallation of Electronics Int'l digital automatic engine analyzer.STC SA4024NMReplace the standard Cessna oil drain plug with a Bogert Aviation quick drain.STC SA4333NMThis STC approves the use of the King KFC200 Flight Control System with the Pratt and Whitney PT6-135 Turbine engines installed on the Cessna 421C Registraion Number N44CG, Serial Number 421C-0110.STC SA3862NM PAGE 1Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.STC SA2302CEInstallation of Bendix MLS-21 microwave landing system receiver.STC SA2063SOInstallation of stretcher system.STC SA3283NMInstallation of ARNAV Systems FC-10/FT 10 digital fuel flow indicating system.STC SA2758NMInstallation of medical oxygen and suction system.STC SA3524SWInstallation of Tracor TA 7900 Omega/VLF navigation system.STC SA1418SOReplacement of rotor vanes in Airborne 211CC and 212CW vacuum pumps. (See limitations)STC SA3110SW-DInstallation of Mitchell Automatic Flight System Model AK579,STC SA3111SW-DInstallation of Mitchell Yaw Damper System Model YK580STC SA2190NM PAGE 1Installation of electronics International Digital Volt/Amp Gauges and Accessories.STC SA3416SW-DEdo Avionics automatic flight system AK 919 consisting of Century 31 autopilot.STC SA5427SWInstallation of Texas Instruments Mode TI 9100-C navigator and King KFC250 Flight Director System, or Cessna ARC 800B Integrated Flight Control SystemSTC SA607GLInstallation of a Shadin Company 910502, 910504, or 910514 fuel flow indicating system.STC SA5426SWInstallation of Texas Instruments Model TI 9100 Loran C navigator.STC SA1867CEDC powered windshield installation. (421C EXCEPT 421C0801 THRU 421C1400)STC SA3881WPInstallation of dual elevator trim tab actuator.STC SA4365WEInstallation of an air conditioning system.STC SA481GLInstallation of a Collins LRN-70 Omega Navigation System.STC SA1261CE-DInstallation of Collins AP-106 autopilot system.STC SA1262CE-DInstallation of Collins AP-1072-axis autopilot system.STC SA1263CE-DInstallation of Collins AP-1073-axis autopilot system.STC SA2656SWAddition of Hydro Seal Fluid Additive to nose and main gear shock struts.STC SA1305CEInstallation of fire suppression system.STC SA1191EAInstallation of Hanlon & Wilson exhaust system P/N 8294-1(L.H) and 8294-2(R.H.)STC SA196RMNew slip joint exhaust manifold.STC SA2905SWInstallation of AVICON TZ1 fuel flow totalizer systemSTC SA2906SWInstallation of AVICON AF1 fuel flow processor.STC SA2386SWInstallation of S.A.F.E., EGT, CHT Systems.STC SA1393CEInstall forward baggage door warning system.STC SA1375CEReduce height of existing survival seat.STC SA1343CEInstall Sierra data console on left hand seat rails.STC SA890SOInstallation of Bendix FCS-810 automatic flight control system including manual electric pitch and optional flight director indicator.STC SA1120CEInstallation of Collins Radio Group AP-106 autopilot system.STC SA1121CEInstallation of Collins Radio Group AP-107 (2 axis) autopilot system.STC SA1122CEInstallation of Collins AP-107(3 axis) autopilot system.STC SA591EAInstallation of Radome Part Part No. 3084X.STC SA886SOInstallation of Bendix M-4D automatic flight control system in cluding optional manual electric pitch trim and optional flight director system.STC SA1675WEInstallation of exhaust gas temperature monitoring systems EGT-2.STC SA661EAInstallation of Radome Kit No. 3084K for Bendix RDR-100 or RDR-110 series radar systems 12-inch antenna.STC SA662CEInstallation of Jet Electronics & Technology, Inc. Model FC120A autopilot.STC SA673CEInstall Hartzell HC-B3WF-2/9349-3 propellers.STC SA978SWCollins FD108 flight director system.STC SA00765DE PAGE 1Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensorSTC SA02153LA-DInstallation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System
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