SH8609SWOther aircraft modifications
Fabrication of Isolair Eliminator II Model 4600-205 fire fighting system.
FAA holder: Isolair Inc.
Aircraft STC directory
Rotorcraft Development UH-1H STCs
The Jun 30, 2026 FAA DRS snapshot contains 25 selected supplemental type certificates with status Current whose public applicability data names the Rotorcraft Development UH-1H. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
25
listed Current at snapshot
15
holder directories
8
modification categories
Feb 6, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications13
Cargo and special mission3
Propellers2
Engine and powerplant2
Aircraft structures2
Rotorcraft modifications1
Electrical systems1
Landing gear and brakes1
Recorded holders
Onboard Systems International4Isolair Inc.2BLR Aerospace LLC.2Bell Helicopter Textron Inc.2Midwest Aerospace TC LLC1Helicopter Technology Co1Dart Aerospace USA Inc.1Airwolf Aerospace LLC1AKV Inc.1Vector Aerospace Helicopter Services USA Inc.1Dart Aerospace Limited1Van Horn Aviation LLC1Mechanical Specialties Inc1Global Spar LLC1Aviation Development Corporation1
Recently revised UH-1H STCs
Showing the 25 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SR01776SERotorcraft modifications
Fabrication, installation, and maintenance of the Isolair Helicopters, Inc., Model 9002 High Cross tubes.
FAA holder: Isolair Inc.
SR00143DEOther aircraft modifications
Installation of an upgraded 42 degree Tail Rotor gearbox, P/N 212-040-003.
FAA holder: Midwest Aerospace TC LLC
SR00713SECargo and special mission
Installation of Onboard Systems International Cargo Hook Kit.
FAA holder: Onboard Systems International
SH5707NMCargo and special mission
Fabrication of Onboard Systems Model 200-088-03 or 200-088-04 (without Load Weight) or 200-089-03, -04, -05 or -06 (with Load Weight) cargo hook suspension systems.
FAA holder: Onboard Systems International
SH5737NMCargo and special mission
Replacement of Bell magnesium cargo hook bumper and ring Part Nos. 204-072-901-1 or -3, and 204-072-905-3, respectively, with Onboard bumper ring kit No. 210-092-00. Fabrication of Onboard Systems Model 210-092-00 bumper ring kit.
FAA holder: Onboard Systems International
SH5758NMElectrical systems
Fabrication of the Onboard Model 200-095-00 Multi-Channel Electrical Slip-Ring Kit.
FAA holder: Onboard Systems International
SR02475SEOther aircraft modifications
Installation of a Tailboom Motion Detection System.
FAA holder: Aircraft Structural Repair Inc.
SR02492LAPropellers
Installation of a Helicopter Technology Company main rotor blade assembly.
FAA holder: Helicopter Technology Co
SR02641SEOther aircraft modifications
Installation of a Service Deck.
FAA holder: Northwest Heli-Structures Inc
SR02070SEEngine and powerplant
Fabrication of Dart D205-770-011 Replacement Engine Mount Kit.
FAA holder: Dart Aerospace USA Inc.
SR00929SEOther aircraft modifications
Fabrication of tail boom mounted strakes.
FAA holder: BLR Aerospace LLC.
SR01470SEOther aircraft modifications
Fabrication and Installation of Fast Fin System.
FAA holder: BLR Aerospace LLC.
SR03408CHOther aircraft modifications
Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103.
FAA holder: Airwolf Aerospace LLC
SR02413LAOther aircraft modifications
Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000.
FAA holder: AKV Inc.
ST04270ATOther aircraft modifications
Install the VTOL ASSALT V3 Windscreen Laminate Kit.
FAA holder: VTOL LLC
SR00767SEAircraft structures
Fabrication of Helipro spar replacement system.
FAA holder: Vector Aerospace Helicopter Services USA Inc.
SR01742NYLanding gear and brakes
Installation of extended height landing gear.
FAA holder: Dart Aerospace Limited
SR01196LAEngine and powerplant
Installation of Honeywell (Lycoming) T53-L-703 engine to replace Honeywell (Lycoming) T53-L-13/13B/-13BA engine. Responsible ACO is Los Angeles, NM-L.
FAA holder: Minuteman Aviation Inc.
SR02051LAPropellers
Installation of a VAn Horn Aviation Tail Rotor Blade.
FAA holder: Van Horn Aviation LLC
SR01946SEOther aircraft modifications
Installation of the Mechanical Specialties, Model UH606.
FAA holder: Mechanical Specialties Inc
SR01497ATOther aircraft modifications
Manufacture of Windows in accordance with Aeronautical Accessories, Inc. Drawing List Report No. AA-97115, no revision, dated August 20, 1997, or later FAA approved revisions, and installation per Installation Instructions listed in that report.
FAA holder: Bell Helicopter Textron Inc.
SR01812ATOther aircraft modifications
Manufacture of Flitestep in accordance with Aeronautical Accessories, Inc. Drawing List Report No. AA-97166, no revision, dated December 19, 1997, or later FAA approved revisions, and installation per Aeronautical Accessories, Inc. Report AA-97087, Revision B, dated December 18, 1997, or later FAA approved revisions.
FAA holder: Bell Helicopter Textron Inc.
SR00103SEOther aircraft modifications
Installation of Aviation Development Corporation oil filter.
FAA holder: Aviation Development Corporation