Installation of emergency float system.
FAA holder: Leonardo Helicopters US Corporation
Aircraft STC directory
Bell Helicopter Textron 412 STCs
The cited FAA DRS record snapshots contain 282 selected supplemental type certificates with status Current whose public applicability data names the Bell Helicopter Textron 412. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
282
listed Current at snapshot
77
holder directories
12
modification categories
Jul 15, 2026
latest recorded revision
Modification demand surface
Recorded holders
RSG Products34Bell Helicopter Textron Inc.31Dart Aerospace USA Inc.24Dart Aerospace Limited19Texas Aviation Services12Alpine Aerotech Ltd11Apical Industries, Inc. dba Dart Aerospace9Sikorsky Aircraft Corporation8Alpine Aerotech LP7Apical Industries Inc5Heritage Aviation Ltd5AEM USA Inc.4Air Methods LLC4Onboard Systems International3Dart Aerospace Ltd.3Helicopter Aviation Services Corporation3Helifab Inc3Benz Airborne Systems3Alpine Helicopters Ltd3Alpine Aerotech Limited3
Recently revised 412 STCs
Showing the 100 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
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Installation of P178 Failsafe Audio Mixer.
FAA holder: AEM USA Inc.
Installation of replacement skid tubes.
FAA holder: Bell Helicopter Textron Inc.
Installation of an articulating patient loading system.
FAA holder: Air Methods LLC
Installation of a Foresight MX Condition Monitoring System.
FAA holder: GPMS International Inc.
Installation of the AFI4700 Electronic Flight Instrument.
FAA holder: Alpine Aerotech LP
Installation of Tracking Patient Loading System.
FAA holder: Air Methods LLC
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Installation of the Aft Pedestal Stowage Compartment.
FAA holder: Alpine Aerotech LP
Installation of pneumatic door actuators.
FAA holder: Dart Aerospace USA Inc.
Remove skid landing gear replacing same with a fixed (non-retracting), wheeled, tricycle landing gear.
FAA holder: Kaman Corporation Aircraft Wheel and Brake LLC
Installation of a Supplemental Lighting System.
FAA holder: Aviation Specialties Unlimited Inc.
Fabrication of the Onboard Model 200-095-00 Multi-Channel Electrical Slip-Ring Kit.
FAA holder: Onboard Systems International
Fabrication of Onboard Systems Model 200-246-00 cargo hook kit.
FAA holder: Onboard Systems International
Installation of Sandel Avionics ST3400H Helicopter Terrain Awareness and Warning System (HTAWS).
FAA holder: Sandel Avionics LLC
Installation of a Chadwick-Helmuth Vibration Monitoring System, VXP.
FAA holder: Diagnostic Solution International LLC
The installation of a Sky Connect Tracking System.
FAA holder: Honeywell International Inc
Installation of Quick Release Mounting Provisions & Quick Release Cargo Basket.
FAA holder: Dart Aerospace Ltd.
Installation of Vertical Reference Door with left seat operation provisions.
FAA holder: Dart Aerospace Ltd.
Installation of GPS Receiver and Gimbal Mount System.
FAA holder: Dart Aerospace Ltd.
Install air ambulance conversion in accordance with Spectrum Aeromed Inc. Drawings as listed on AML SA01213CH, or later FAA approved revision.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
Install air ambulance unit.
FAA holder: Spectrum Aeromed LLC dba Spectrum Aeromed
Installation of a Trakka Corporation Trakkabeam A800 High Intensity Searchlight System.
FAA holder: Phoenix Aerospace Limited
Fabrication and installation of Dart D412-742 Float Skidtube.
FAA holder: Dart Aerospace USA Inc.
Fabrication of the Dart D205-803/D212-803 LH Pilot in Command Kits.
FAA holder: Dart Aerospace USA Inc.
Installation of Era Emergency Flotation Passenger Step Actuator.
FAA holder: Dart Aerospace USA Inc.
Installation of Olympic Aero Services, Inc. Additional Telemetry Unit (ATU).
FAA holder: OLYMPIC AERO SERVICES INC.
Fabrication of BLR Aerospace (BLR) tail boom mounted strakes.
FAA holder: BLR Aerospace LLC.
Installation of a Dual Tailboom Strakes and FastFin System.
FAA holder: BLR Aerospace LLC.
Installation, maintenance and affectivity of replacement composite driveshaft covers.
FAA holder: Trinity Aviation Services Limited
Installation of an Enhanced Vision System.
FAA holder: Avio Design Group Inc
Installation of Wulfsburg RT-9600 FM Transceiver.
FAA holder: RSG Products
Installation of Concorde Battery P/N RG-380E/40.
FAA holder: Concorde Battery Corporation
Installation of Exterior Door Handle Kits.
FAA holder: Alpine Aerotech LP
Installation of an air ambulance conversion kit.
FAA holder: Med-Pac Inc.
Installation of a four place utility seat configuration.
FAA holder: Bell Helicopter Textron Inc.
Installation of a five place utility seat configuration.
FAA holder: Bell Helicopter Textron Inc.
Installation of CHT Aerospace Utility Interior Kit.
FAA holder: CHT Aerospace Inc.
Installation of Apical Industries, Inc. Cable Cutters Kit.
FAA holder: Apical Industries, Inc. dba Dart Aerospace
Installation of Motorola Syntar 9000 FM Radios.
FAA holder: RSG Products
Installation of EMS Bus and EMS Annunciators.
FAA holder: RSG Products
Installation of Aft Medical Panel IAW Heli-Dyne DWG.
FAA holder: RSG Products
Installation of an Airborne Video System (AVS).
FAA holder: RSG Products
Installation of Spectrolab SX-16 searchlight.
FAA holder: RSG Products
Installation of center medical attendant seat and tracks.
FAA holder: RSG Products
Installation of attendant seat L/H and R/H with tracks.
FAA holder: RSG Products
Installation of a 6 Place EMS Litter system.
FAA holder: RSG Products
Installation of Baggage Compartment Protection Kit.
FAA holder: Alpine Aerotech LP
Installation of replacement fuel cap or locking fuel cap.
FAA holder: Bell Helicopter Textron Inc.
Installation of Retractable Hardpoints System.
FAA holder: Bell Helicopter Textron Inc.
Installation of Crew Mobility Restraint Kit.
FAA holder: Laz-Tec, LLC
Installation of an AEM Corp. Master Caution Panel.
FAA holder: VIH Aerospace Inc
Installation of rotor disc and underfuselage recognition lights.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation
Installation of Bendix/King 660 flight management system, RDS84VP weather rader, and GC 360A radar graphics, and a radio package modification.
FAA holder: Helicopter Aviation Services Corporation
Installation of an audio panel mount.
FAA holder: Helicopter Aviation Services Corporation
Installation of a loud hailer mount.
FAA holder: Helicopter Aviation Services Corporation
Install Honeywell (Bendix/King) KRA 405B radar altimeter system.
FAA holder: Maxcraft Avionics Ltd.