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.

STC SA00068SEInstallation of fuel flow/pressure instruments. (W/TSIO-360-MB1)Electronics International Inc.STC SA00290BOInstallation of Avidyne Corporation Part Number 700-00167-XXX Multi-Function Display and Mounting Tray Assembly Part Number 700-00168-XXXAvidyne CorporationSTC SA01085LAInstallation of the VNS 1000 Voice Navigation System.VNS IncorporatedSTC SA02110CHInstallation of a Time Trac Data RecorderP2 IncorporatedSTC SA2693NMInstallation of Electronics International digital volt/amp gauges and accessories.Electronics International Inc.STC SA00747ATInstallation of left hand and right hand inboard fuel cell assemblies.FFC ManufacturingSTC SA00761ATInstallation of left and right side fuel cell assemblies.FFC ManufacturingSTC SA01988SEInstallation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P.Electronics International Inc.STC SA02634AT-DInstallation of fuel cell modifications consistentFFC ManufacturingSTC SA1535GLInstall air ambulance conversion.Snaky Creek Enterprises LLC dba Spectrum AeromedSTC SA7063NMInstallation of acrylic window liners in accordance with FAA approved Drawing Lists. Drawing lists are listed on FAA approved Model List Number SA7063NM, or later FAA approved revision.G & D Aero Products Inc.STC SA5796SW-DInstallation of Alcor Tru-Flow indicating system, or SDI Hoskins fuel flow indicating system, or Silver Instruments Fueltron fuel flow indicating system.RAM Aircraft Limited PartnershipSTC SA02033ATModification to install an air-oil separator to prevent oil from being aspirated from the engine breather line.M-20 Oil Separators LLCSTC SA02546NYInstallation of the Lord Corporation Nose Wheel Shimmy Damper Part Number SE-1090-1Lord CorporationSTC SA01473SEInstallation of a GTX 32 (mode C), GTX 33 (mode S), or GTX 33D (mode S with diversity) Remote TranspondeGarmin AT Inc.STC SA4005NMPrecise Flight Inc. Pulselite Control SystemPrecise Flight IncSTC SA03527ATInstallation of an Avidyne EXP5000 Primary Flight Display (PFD)Star AviationSTC SA01205WI-DInstallation of the KMD 250 Multi-Function Display System with Optional Internal VFR GPS and Optional Traffic and Weather Sensors.Honeywell International IncSTC SA01105WI-DInstallation of Bendix/King KMD 550/850 Multi-Functional Display System with optional traffic, terrain and weather sensors. This STC applies to both single-engine and small multi-engine aircraft (see 1 of 2 for small twin-engine).Honeywell International Inc.STC SA568EAInstallation of Grimes Manufacturing Company three light strobe kit P/N 34-0107-1.Honeywell International Inc.STC SA20GLInstallation of Woodward Type II electronic propeller synchronizer or synchrophaser system. (G-44A MODIFIED COLEMILL - STC 2-13) (500-A modified - Colemill STC SA340SO)Ontic Engineering and Manufacturing Inc.STC SA250CEInstallation of Woodward electronic propeller synchraphaser system.Ontic Engineering and Manufacturing Inc.STC SA01420WIInstallation of Garmin GNS 430A / 530A COMM/NAV/GPS Systems. Data required: (1) Scandinavian Avionics Design GmbH Drawing List 2027438-DL-02, Issue 2; or later EASA approved revisions. (2) Scandinavian Avionics Design GmbH Approved Aircraft Flight Manual Supplement, Doc. 2027438-AM-02A, Issue 1, and Doc. 2027438-AM-02B, Issue 2, both approved by EASA under approval No. EASA.A.S.01389 dated 07-09-2005, or later EASA approved revision.Scandinavian Avionics Design GmbHSTC SA1512WEInstallation of exhaust gas temperature monitoring systems Model EGT-1.K S Avionics IncSTC SA01695SEInstallation of an antennaGarmin AT Inc.STC SA574CEInstallation of toilet seat belt.Eaglejet Aviation Inc.STC SA599CEAlter wing leading edge and fuel system. Limited to installation on Cessna 421, serial number 421-0151.Eaglejet Aviation Inc.STC SA602CEInstall shoulder harness.Eaglejet Aviation Inc.STC SA01860NYInstallation of Graphic Engine Monitors (GEM) Models GEM-610 and GEMINI 1200.Insight Instrument CorporationSTC SA00729SEInstallation of twin temperature indicating system with fuel flow in accordance with J.P. Instruments (JPI) Installation manual Report No. 760, Revision -, dated 7/20/99, or later FAA approved revision.J P InstrumentsSTC SA01487SEInstallation of a GDL 69 or GDL 69A XM Satellite Receiver in accordance with Garmin Supplemental Type Certificate Master Data List, P/N 005-C0217-00, Revision A, dated December 20, 2004, or later FAA approved revision.Garmin AT Inc.STC SA00680SEInstallation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.Electronics InternationalSTC SA438EAInstallation of Norton radome kit No. 2022X-3.Saint-Gobain Performance Plastics CorpSTC SA01158WIInstallation of Aero Enhancements UV250-1 Supplemental Instrument Panel Lightning System.Aero Enhancements Inc.STC SA3522NMInstallation of Precise flight series 400 speedbrake system.Precise Flight IncSTC SA5137NMInstallation of sun visor.Rosen Sunvisor Systems LLCSTC SA00161BOInstallation of Avidyne Corporation FlightMax 700-00007-( ) EX500 Multi-Function Display.Avidyne CorporationSTC SA00308WIInstallation of replacement wing rear spar capsCallahan Aircraft ServicesSTC SA02217AKInstallation of Garmin AT Model GDL90 UAT Data Link System, in accordance with Garmin AT, Inc., GDL 90 UAT Master Data List, P/N 560-0278-01, Revision A, dated November 12, 2004, or later FAA approved revision.Garmin AT Inc.STC SA01436SECockpit sunvisor retrofit kit.Rosen Sunvisor Systems LLCSTC SA1131SWInstallation of side facing seats.Aviation Fabricators IncSTC SA2650NMCockpit Sun Visor Installation.Rosen Sunvisor Systems LLCSTC SA00948CHInstallation of various de-icer wire harnesses. (E90 modified by STC SA3593NM, F90 modified by STC SA4131NM, B200 modified by STC SA2698NM-S, DHC-6 Series modified by STC SA3532NM)SMR Technologies IncSTC SA2715CEInstallation of single place composite commuter seats on the seat rails per Aviation Fabricators Drawing list No. AF-130 stamped "FAA Approved" May 2, 1991, or later FAA approved revision.Aviation Fabricators IncSTC SA2716CEInstallation of double composite commuter seats on the seat rails per Aviation Fabricators Drawing List No. AF-130 stamped "FAA Approved" May 2, 1991, or later FAA approved revision.Aviation Fabricators IncSTC ST02547ATInstallation of a voice alert system.Aircraft Components IncSTC SA00165BOInstallation of Avidyne Corporation Datalink Coupler, part number 700-00015-000 per Avidyne Corporation Master Document List, Document No. AVACP-006 dtd 1/2/93 or later FAA-approved revisions.Avidyne CorporationSTC SA00419NYInstallation of cockpit utility light.Burns Richard GSTC SA00823CHInstallation of various de-icer wire harnesses.SMR TechnologiesSTC SA02520ATInstallation of M-20 Oil Separator, model 600-WP.M-20 Oil Separators LLC
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