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.

STC SA3458WEModification of fuselage to install camera window, with the option to allow unpressurized operations when the optical glass is removed and camera door is openAvcon Industries IncSTC SA02825NY PAGE 1Installation of Aerospace Logic Aircraft InstrumentsAerospace Logic Inc.STC SA01692SEInstallation of a Garmin GMX 200 Multi-Function DisplayGarmin International IncSTC SA03148NYThe installation of the Latitude Technologies Corporation S100 Tracking SystemLatitude Technologies CorporationSTC SA01487SE-DInstallation of a GDL 69 or GDL 69A XM Satellite ReceiverGarmin International IncSTC SA00281BOInstallation of Avidyne Corporation MLX770 MultiLink Broadcast Transceiver P/N 700-00163-( ), Sensor Systems Inc. Antenna P/N S67-1575-109, or equivalent, and optional Avidyne Mounting Tray P/N 700-00165-000Avidyne CorporationSTC SA2440SWInstallation of airstair door saver.BCN Aerospace Inc.STC SA00243BOInstallation of Centurion Consulting, Inc. GPS Steering Assist Module (SAM) with roll steering (p/n 0025-5100), or without roll steering (p/n 0025-5200).Icarus Avionics, LLCSTC SA00103WIInstallation of a heated windshield panelAviation Fabricators IncSTC 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 SA01988SEInstallation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P.Electronics International Inc.STC 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 SA8352SW-DInstall vortex generators.RAM Aircraft Limited PartnershipSTC 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 SA02550NYInstallation of a 4-blade MT-Propeller Models MTV-16-I-E-C-F/CF225-37a on a Cessna 421C airplanes.MT- Propeller Entwicklung GmbHSTC 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 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 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 SA01695SEInstallation of an antennaGarmin AT Inc.STC SP00400SEInstallation of various propeller electrical de-icer modelsSMR TechnologiesSTC SA574CEInstallation of toilet seat belt.Eaglejet Aviation Inc. · Lists 421 SeriesSTC 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 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 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 SA00556DEInstallation of a left-hand exhaust stack assembly.Heliarc Welding Service Inc.STC SA09635ACInstallation of S-TEC Meggitt Engine Instrument Display System (EIDS) in accordance with Master Data List 921230, Revision 7, dated September 17, 2004, or later FAA approved revision for Cessna 425. FAA approved Airplane Flight Manual Supplement No. 892137, dated September 20, 2004, or later FAA approved revision is required for Cessna 425 with S-TEC Meggitt EIDS.S-TEC CorporationSTC SA01436SECockpit sunvisor retrofit kit.Rosen Sunvisor Systems LLCSTC SA2650NMCockpit Sun Visor Installation.Rosen Sunvisor Systems LLCSTC 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 SA10185SCInstallation of Hartzell model HC-C3YN-2UF/FC9587D-7 or HC-C3YN-2UF/FC9587DB-7 propellers.RAM Aircraft Limited PartnershipSTC SA01163WIInstallation of Meggitt Avionics Electronic Flight Instrument System (EFIS), including single Primary Flight Display, single Navigation Display, Air Data, and Attitude and Heading Reference System.Yingling Aircraft IncSTC ST02547ATInstallation of a voice alert system.Aircraft Components Inc
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