# STCs that may be installed: Bell 412 A list on [Bell 412](https://openairdocs.org/model/bell-412.md). In force first, then newest. The registry doesn’t record which STCs an aircraft has. Page 1 of 8 · 385 STCs - [STC SA00680SE (2 OF 6](https://openairdocs.org/stc/SA00680SE%20(2%20OF%206.md): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. · Electronics International - [STC SA01213CH](https://openairdocs.org/stc/SA01213CH.md): Install air ambulance conversion in accordance with Spectrum Aeromed Inc. Drawings as listed on AML SA01213CH, or later FAA approved revision. · Spectrum Aeromed LLC dba Spectrum Aeromed - [STC SA04465NY](https://openairdocs.org/stc/SA04465NY.md): Installation of the iPad Mount · Avio Design Group Inc - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International - [STC SA566NE](https://openairdocs.org/stc/SA566NE.md): Medevac interior installation. · Sikorsky Global Helicopters Inc - [STC SH1025NE](https://openairdocs.org/stc/SH1025NE.md): Installation of Bendix/King 660 flight management system, RDS84VP weather rader, and GC 360A radar graphics, and a radio package modification. · Helicopter Aviation Services Corporation - [STC SH1038NE](https://openairdocs.org/stc/SH1038NE.md): Installation of engine exhaust ejector assembly. · Helicopter Support Inc Services Div - [STC SH1039NE](https://openairdocs.org/stc/SH1039NE.md): Remove existing starter-generator and install Aircraft Parts Corporation (APC) starter generator P/N 200SG119Q · Shurka Aerospace Inc - [STC SH1043NE](https://openairdocs.org/stc/SH1043NE.md): Installation of an audio panel mount. · Helicopter Aviation Services Corporation - [STC SH1044NE](https://openairdocs.org/stc/SH1044NE.md): Installation of a loud hailer mount. · Helicopter Aviation Services Corporation - [STC SH1122GL](https://openairdocs.org/stc/SH1122GL.md): Installation of a Shadin Co. fuel flow indicator. · Shadin Avionics - [STC SH1186SO](https://openairdocs.org/stc/SH1186SO.md): Replace existing nickel-cadmium battery with Teledyne Gill BB638T series or G-6381 series lead-acid battery. · Teledyne Battery Products - [STC SH1415SO](https://openairdocs.org/stc/SH1415SO.md): Installation of Wire Strike Protection system; Configuration #1 - Installation P/N 364-83300-5 (Standard Skid Gear) or P/N 364-83300-7 (High Skid Gear) · Magellan Aerospace - [STC SH1523GL](https://openairdocs.org/stc/SH1523GL.md): Installation of Shadin engine trend monitor system. · Shadin Company Inc - [STC SH1543GL](https://openairdocs.org/stc/SH1543GL.md): Remove skid landing gear replacing same with a fixed (non-retracting), wheeled, tricycle landing gear. · Kaman Corporation Aircraft Wheel and Brake LLC - [STC SH1640SO](https://openairdocs.org/stc/SH1640SO.md): Installation of Utah Research & Develop. Co. Model 126 BC-101 airborne battery charger system. · Aviall - [STC SH1651GL](https://openairdocs.org/stc/SH1651GL.md): Remove skid landing gear replacing same with a fixed (non-retracting), wheeled, tricycle landing gear. · Kaman Corporation Aircraft Wheel and Brake LLC - [STC SH17NW](https://openairdocs.org/stc/SH17NW.md): Installation of Chadwick Electronic weighing system C-47. · Onboard Systems International - [STC SH1919NM](https://openairdocs.org/stc/SH1919NM.md): Fabrication and installation of P/N L8500A-1 or L8500R-1 left ski and P/N L8500A-2 or L8500R-2 right ski. · Airglas Inc. - [STC SH201WE](https://openairdocs.org/stc/SH201WE.md): Installation of stirrup assemblies to directional control pedals for operation by handicapped pilot. (US ARMY OH-13E 205A) · Dallwig Barry C - [STC SH205WE](https://openairdocs.org/stc/SH205WE.md): Installation of tail/rotor floodlights on upper surface of horizontal stabilizers. · DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SH2211NM](https://openairdocs.org/stc/SH2211NM.md): Installation of Silver Instruments Fueltron IIIPT-IGS, IIIPT-IPS, IIIPT-ILS, IIIPT-IKS digital fuel flow indicating system. · Arnav Systems Inc - [STC SH2212SW](https://openairdocs.org/stc/SH2212SW.md): Installation of X Band radome on nose of helicopter. · AVCOM Technologies - [STC SH2281SW](https://openairdocs.org/stc/SH2281SW.md): Installation of environmental control unit. · Associated Air Center - [STC SH2308NM](https://openairdocs.org/stc/SH2308NM.md): Installation of Bell P/N 205-706-045 series auxiliary fuel tank assemblies, Bell P/N206-706-324-003 litters and Bell P/N 204-070-023-011 rear facing attendant seats. · ERA Aviation, Inc. - [STC SH261WE](https://openairdocs.org/stc/SH261WE.md): Installation of an external load attachment mechanism in accordance with FAA Approved USDA Forest Service Master Drawing List and Rotorcraft Flight Manual Supplements, per Approved Model List SH261WE, and all subsequent FAA approved revisions to these documents. · USDA Forest Service - [STC SH2820SO](https://openairdocs.org/stc/SH2820SO.md): Replacement of an emergency floatation supply bottle. · Bell Helicopter Textron Inc. - [STC SH3189SO](https://openairdocs.org/stc/SH3189SO.md): Installation of an external hoist in accordance with Aeronautical Accessories, Inc. Report No. AA-91064, no revision, dated January 3, 1992 or later Federal Aviation Administration (FAA) approved revisions. · Bell Helicopter Textron - [STC SH3261SO](https://openairdocs.org/stc/SH3261SO.md): Installation of replacement skid tubes. · Bell Helicopter Textron Inc. - [STC SH3311SO](https://openairdocs.org/stc/SH3311SO.md): Manufacture of Replacement Windows in accordance with Aeronautical Accessories, Inc. Drawing List Report No. AA-92083, Rev. M, dated September 20, 2010, or later FAA approved revisions, and installation per Installation Instructions as listed in that report. · Bell Helicopter Textron Inc. - [STC SH3316SO](https://openairdocs.org/stc/SH3316SO.md): Installation of pushout window assembly. · Bell Helicopter Textron Inc. - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM.md): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, · Precise Flight Inc - [STC SH3512SW](https://openairdocs.org/stc/SH3512SW.md): Installation of freon air conditioning system, electrically driven. · RSG Products - [STC SH3553SW](https://openairdocs.org/stc/SH3553SW.md): Increase fuel system capacity. · Petroleum Helicopters Inc - [STC SH3563SW](https://openairdocs.org/stc/SH3563SW.md): Installation of Spectrolab SX-16 searchlight. · RSG Products - [STC SH3570SW](https://openairdocs.org/stc/SH3570SW.md): Installation of forward facing single passenger seating arrangement. · RSG Products - [STC SH3671SW](https://openairdocs.org/stc/SH3671SW.md): Installation of structural provisions for six-patient litter system · RSG Products - [STC SH3673SW](https://openairdocs.org/stc/SH3673SW.md): Installation of Baker Electronics Loud Hailer with external speakers · RSG Products - [STC SH3674SW](https://openairdocs.org/stc/SH3674SW.md): Installation of Baker Electronics Models M-1035/M-1045 Audio System · RSG Products - [STC SH3676SW](https://openairdocs.org/stc/SH3676SW.md): Installation of Wulfsburg RT-9600 FM Transceiver · RSG Products - [STC SH3677SW](https://openairdocs.org/stc/SH3677SW.md): Installation of Motorola Syntar 9000 FM Radios · RSG Products - [STC SH3678SW](https://openairdocs.org/stc/SH3678SW.md): Installation of provisions for installation of Teledyne Avionics Engine Monitor System · RSG Products - [STC SH3679SW](https://openairdocs.org/stc/SH3679SW.md): Installation of Bambi Bucket Fire Suppression Kit Electrical Provisions · RSG Products - [STC SH3680SW](https://openairdocs.org/stc/SH3680SW.md): Installation of replacement windows (in place of BHT205-030-285) · RSG Products - [STC SH3681SW](https://openairdocs.org/stc/SH3681SW.md): Installation of fixed external hoist with a Breeze-Eastern or a Lucas-Western hoist. · RSG Products - [STC SH3682SW](https://openairdocs.org/stc/SH3682SW.md): Installation of Devore Forward Facing Recognition Lights · RSG Products - [STC SH3712SW](https://openairdocs.org/stc/SH3712SW.md): Installation of replacement windshield. · Bell Helicopter Textron Inc. - [STC SH3726NM](https://openairdocs.org/stc/SH3726NM.md): Installation of ARNAV Systems FC-10/FT-10 digital fuel flow indicating system. · Arnav Systems - [STC SH3731SW](https://openairdocs.org/stc/SH3731SW.md): Installation of 155 gallon capacity external auxiliary fuel system in accordance with drawing list 41228-1000, Revision B, dated February 21, 1987, or later FAA approved revision. · Apical Industries Inc - [STC SH3792SW](https://openairdocs.org/stc/SH3792SW.md): Installation of EMS Bus and EMS Annunciators · RSG Products Next page: https://openairdocs.org/model/bell-412/stcs.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT s.stc_number, s.description, s.holder, s.status, s.status_date FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE model_key = '412') ORDER BY s.status = 'Current' DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/model/bell-412/stcs --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.