SR01050LAOther aircraft modifications
Installation of main rotor blades P/N 500P2300-501/503/505.
FAA holder: Helicopter Technology Company
Aircraft STC directory
MD Helicopter 500N STCs
The Jun 30, 2026 FAA DRS snapshot contains 96 selected supplemental type certificates with status Current whose public applicability data names the MD Helicopter 500N. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
96
listed Current at snapshot
33
holder directories
12
modification categories
Jan 13, 2026
latest recorded revision
Modification demand surface
Other aircraft modifications37
Cargo and special mission10
Fuel systems10
Aircraft structures10
Electrical systems7
Engine and powerplant7
Avionics6
Cabin and interiors3
Landing gear and brakes3
Aircraft connectivity1
Rotorcraft modifications1
Safety and emergency equipment1
Recorded holders
Aerometals23Bell Helicopter Textron Inc.14Heritage Aviation Ltd4Airfilm Camera Systems LLC3Dart Aerospace USA Inc.3Thoroughbred Aviation Maintenance Inc3Onboard Systems International3Fargo Manufacturing Co.3Isolair Inc.2Gulfstream-California Inc.2Pratt & Whitney Engine Services Inc.2Tyler Camera Systems2Precision Heli-Support, LLC1Boost Human External Cargo Systems Inc.1Onboard Systems International LLC1Fifty-Ten-Yankee LLC1The NORDAM Group LLC1Sikorsky Aircraft Corporation1Aero Dynamix Inc.1Gerbino Flight Systems1
Recently revised 500N STCs
Showing the 96 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SH3686NMFuel systems
Installation of an Isolair Model3700-110 spray tank system. (500N restricted category).
FAA holder: Isolair Inc.
SR00709ATElectrical systems
Installation of Starter-Generator Cooling Kit.
FAA holder: Precision Heli-Support LLC
SR00771LAOther aircraft modifications
Installation of right-side utility mount.
FAA holder: Airfilm Camera Systems LLC
SR00772LAOther aircraft modifications
Installation of left-side utility mount.
FAA holder: Airfilm Camera Systems LLC
SR00862LAOther aircraft modifications
Installation of aft belly utility mount.
FAA holder: Airfilm Camera Systems LLC
SH5247NMCargo and special mission
Installation of external pod, camera mount, and 12 volt power provision.
FAA holder: Dart Aerospace USA Inc.
SH2735NMAircraft structures
Installation of pneumatic door actuators.
FAA holder: Dart Aerospace USA Inc.
SH5206NMOther aircraft modifications
Installation of two underfuselage jacking hard points.
FAA holder: Dart Aerospace USA Inc.
SR04680NYCargo and special mission
Installation of Human External Cargo (HEC) Long-Line Kit.
FAA holder: Boost Human External Cargo Systems Inc.
SR00314ATEngine and powerplant
Installation of engine firewall in Hughes 369 model helicopter.
FAA holder: Thoroughbred Aviation Maintenance Inc
SR00450ATCabin and interiors
Installation of a seat pan inspection panel.
FAA holder: Thoroughbred Aviation Maintenance Inc
SR02859ATOther aircraft modifications
Installation of Part Number 369HT21004 main rotor hub fairing as a direct replacement for OEM Part Number 369D21004-11 (BSC).
FAA holder: Thoroughbred Aviation Maintenance Inc
SH4908NMOther aircraft modifications
Fabrication of Onboard Systems Model 200-034-00, 200-034-01, and 200-034-02 Load Weigh Kits.
FAA holder: Onboard Systems International
SR00407SECargo and special mission
Fabrication of Onboard Systems Model 200-187-00 cargo hook kit.
FAA holder: Onboard Systems International LLC
SR00525SECargo and special mission
Fabrication of Onboard Systems Model 200-231-00 and 200-231-01 Cargo Hook Attach Point Kit and installation of these Cargo Hook Attach Point Kits.
FAA holder: Onboard Systems International
SR00892SECargo and special mission
Fabrication of Onboard Systems International Model 200-264-00, 200-264-01, and 200-264-02 Cargo Hook Kits.
FAA holder: Onboard Systems International
SH4655NMFuel systems
Installation of Soloy 375-1000 series auxiliary fuel system.
FAA holder: Fifty-Ten-Yankee LLC
SH907GLElectrical systems
Installation of a starter generator cooling system.
FAA holder: Fargo Manufacturing Co.
SR02129CHFuel systems
Installation of Fargo 19-gallon auxiliary fuel tank with STC SH656GL.
FAA holder: Fargo Manufacturing Co.
SH2554NMAircraft structures
Installation of Modified front window canopy.
FAA holder: The NORDAM Group LLC
SR02058SEFuel systems
Fabrication of Aerometals Fuel Vent Emergency Shutoff Valve Assembly in accordance with Aerometals Master Drawing List No. Aero-MDL-002, Revision A, dated February 24, 2010, or later FAA-approved revision; and installation of this assembly in accordance with Aerometals Installation Instructions No. Aero-Inst-001, Revision NC, dated April 07, 2009, or later FAA-approved revision.
FAA holder: Aerometals
SH2935SOOther aircraft modifications
Installation of an SX-16 Nightsun searchlight on a forward quick mount kit.
FAA holder: Bell Helicopter Textron Inc.
SH7405SWAircraft structures
Installation of a passenger door window.
FAA holder: Bell Helicopter Textron Inc.
SH7443SWOther aircraft modifications
Installation of windshield.
FAA holder: Bell Helicopter Textron Inc.
SH7581SWOther aircraft modifications
Installation of Heli-Plex P/N39HP913 windshield assembly.
FAA holder: Bell Helicopter Textron Inc.
SR01123NY-DAircraft connectivity
Installation of a Navtech Microwave Antenna System.
FAA holder: Sikorsky Aircraft Corporation
SR09526RCOther aircraft modifications
Installation of Night Vision Imaging System (NVIS) / Night Vision Goggles (NVG) Cockpit Lighting.
FAA holder: Aero Dynamix Inc.
SR02095SEOther aircraft modifications
Fabrication of a replacement Aerometals Scavenge Pump Assembly.
FAA holder: Aerometals
SH2926SOOther aircraft modifications
Installation of an Inframetrics Model IRTV-445 FLIR on a forward quick mount kit.
FAA holder: Bell Helicopter Textron Inc.
SH2927SOCargo and special mission
Installation of an Istec/Wescam Model 104/12 camera on a forward quick mount kit.
FAA holder: Bell Helicopter Textron Inc.
SH1383SOOther aircraft modifications
Manufacture of Nightscanner searchlight kit.
FAA holder: Bell Helicopter Textron Inc.
SH1626SOOther aircraft modifications
Installation of rain gutters over pilot and passenger doors.
FAA holder: Bell Helicopter Textron Inc.
SH3028SOOther aircraft modifications
Installation of SX-5 searchlight on a forward quick-mount kit.
FAA holder: Bell Helicopter Textron Inc.
SH3076SOAircraft structures
Installation of automatic door openers.
FAA holder: Bell Helicopter Textron Inc.
SH5948SWAircraft structures
Installation of slide window assembly in pilot and passenger door.
FAA holder: Bell Helicopter Textron Inc.
SH7404SWAircraft structures
Installation of a crew door window.
FAA holder: Bell Helicopter Textron Inc.
SR00087ATFuel systems
Remove existing fuel cap locks and replace with Aeronautical Acessories locking fuel cap assembly, P/N 500-281-001.
FAA holder: Bell Helicopter Textron Inc.
SH2530NMAircraft structures
Installation of quick removal door hinges.
FAA holder: Gerbino Flight Systems
SR00088ATOther aircraft modifications
Installation of replacement windshield and windows.
FAA holder: Bell Helicopter Textron Inc.
SH207WEFuel systems
Installation of range extension fuel tank in cargo area.
FAA holder: ROBERTSON FUEL SYSTEMS LLC
SR02232LAAvionics
Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System.
FAA holder: Garmin AT Inc.
SH3195NMElectrical systems
Installation of generator kit No. 369-100.
FAA holder: Gulfstream-California Inc.
SH5813NMElectrical systems
Installation of WECO Aerospace Systems, Inc. generator cooling kit and increase the maximum continuous duty rating to 130 amps.
FAA holder: Gulfstream-California Inc.
SR02011SEOther aircraft modifications
Fabrication of Aerometals, LLC, Transmission Oil Seals in accordance with Master Drawing List Aero-MDL-004, dated November 9, 2009, or later FAA-approved revision; and installation in accordance with the corresponding Aerometals Installation Instructions, as referenced on the continuation page.
FAA holder: Aerometals
SR02043SEOther aircraft modifications
Fabrication of Aerometals, LLC, Transmission Oil Seals in accordance with Master Drawing List Aero-MDL-004, dated November 9, 2009, or later FAA-approved revision; and installation in accordance with the corresponding Aerometals Installation Instructions, as referenced on the continuation page.
FAA holder: Aerometals
SR02046SEOther aircraft modifications
: Fabrication of Aerometals Output Spline Spray Nozzle in accordance with Aerometals Master Drawing List No. Aero-MDL-009, Revision NC, dated April 30, 2009, or later FAA-approved revision; and installation in accordance with Aerometals Installation Instructions No. Aero-Inst-009, Revision NC, dated April 30, 2009, or later FAA-approved revision.
FAA holder: Aerometals
SR02062SEOther aircraft modifications
Fabrication of a replacement Aerometals Heater Control Valve Assembly in accordance with Aerometals Master Drawing List No. Aero-MDL-007, Revision A, dated February 17, 2010, or later FAA-approved revision; and installation of this assembly in accordance with Aerometals Installation Instructions No. Aero-Inst-008, Revision NC, dated March 27, 2009, or later FAA-accepted revision.
FAA holder: Aerometals
SH3555NMElectrical systems
Installation of a Teledyne-Gill P/N G-641 lead acid battery.
FAA holder: Rolls-Royce Engine Services-Oakland Inc.
SR00103SEOther aircraft modifications
Installation of Aviation Development Corporation oil filter.
FAA holder: Aviation Development Corporation
SR01948SEFuel systems
Fabrication and installation of an Right Hand Fuel Tank Filler Assembly.
FAA holder: Aerometals
SR01996SEFuel systems
Fabrication and installation of an oil tank filler cap assembly in the above model rotor craft.
FAA holder: Aerometals
SR01179SERotorcraft modifications
Fabrication of the Winco Side Pull Handle Assembly per Drawing No. W002, Revision N/C, dated December 13, 2002, or later FAA-approved revision, and the Hook Link Assembly, Part No. 369SP-200, per Colorado Helicopters Drawing No. 369SP-200, Revision C, dated September 11, 1991, or later FAA-approved revision; and installation and maintenance of this system.
FAA holder: Winco Inc.
SR01675SEOther aircraft modifications
Fabrication of AMC Part Number AM369A4516 ( ), N1 Tachometer Indicator and AM369D24518 ( ) N2/NR Tachometer Indicator.
FAA holder: Aerometals
SR01696SEOther aircraft modifications
Fabrication of Main Rotor Hub Fairing and Support Assembly AMC Part Numbers AM369D21004 and AM369D21005.
FAA holder: Aerometals
SH1713SOOther aircraft modifications
Installation of a wire strike protection system.
FAA holder: Bristol Aerospace Ltd
SH5230NMOther aircraft modifications
Installation of side pull hook assembly.
FAA holder: Colorado Helicopters Inc
SR00062BOEngine and powerplant
Installation of a Pratt & Whitney Engine Services, Inc. Health Usage Monitoring System (HUMS) Model 1122, P/N HUMS-A-070-1.
FAA holder: Pratt & Whitney Engine Services Inc.
SH594NEAvionics
Installation of a Teledyne Avionics Power Analyzer and Recorder.
FAA holder: Aerosonic Corporation
SH7733SWAvionics
Installation of an enlarged instrument panel and back lighted instrument overlay.
FAA holder: Heritage Aviation Ltd
SR01550SEOther aircraft modifications
Fabrication of AMC Part Number AM369D290135 scavenge air elbow assembly.
FAA holder: Aerometals
SR01551SEOther aircraft modifications
Fabrication of AMC Part Number AM369A1231 droop stop roller assembly.
FAA holder: Aerometals
SR01581SEOther aircraft modifications
Fabrication of AMC Part Number AM369D25201 input shaft sleeve assembly.
FAA holder: Aerometals
SR00932LASafety and emergency equipment
Installation of Apical emergency float kit, p/n 20491.
FAA holder: Apical Industries Inc
SR01136SELanding gear and brakes
Fabrication of AMC AM369A6200-45, -46, -57, -58 Landing Gear Fillet Fairings and AM369H6200-73, and -74 Landing Gear Fairing Guides per AMC Master Drawing List No. MDL-AMC-003, Rev A, dated August 29, 2002 or later FAA approved revision; and installation of this assembly in accordance with the Maintenance Manual for the rotorcraft, document number CSP-HMI-2, Rev 21, or later FAA approved revision.
FAA holder: Aerometals
SR01171SEEngine and powerplant
Fabrication of AMC AM369H8092 engine cooling duct orifice.
FAA holder: Aerometals
SR01204SELanding gear and brakes
Fabrication of AMC AMC369H92827 pin, clevis-rotor brake.
FAA holder: Aerometals
SR01265SEOther aircraft modifications
Fabrication of AMC Part Number AM369D25707-13 oil cooler tube assembly.
FAA holder: Aerometals
SR01363SEOther aircraft modifications
Fabrication of AMC Part Number AM369D21308 main rotor spacer in accordance with AMC Master Drawing List No. MDL-AMC-016, Revision A, dated June 30, 2003, or later Federal Aviation Administration (FAA) approved revision. The main rotor spacer must be installed in accordance with AMC Installation Instructions AMC MI-03005, Revision IR, dated March 24, 2003, or later FAA approved revision.
FAA holder: Aerometals
SH390NWCargo and special mission
Installation of an electronic weighing system, for monitoring cargo hook weight, in accordance with Measurement Systems International, Inc., Installation drawing No. D00327, Sheets 1 and 2, or Drawing D00473, Rev. E.
FAA holder: Measurement Systems Intl Inc
SH980NEEngine and powerplant
Installation of a Heli-Logistics Ltd. P/N HL92116 engine upper firewall.
FAA holder: Heli-Logistics Ltd
SH3301SOOther aircraft modifications
Installation of a Freon Air Conditioning System in accordance with Aero Aire Corporation Master Drawing List No. 500R010, Rev. 2, dated 5/26/1992, or later FAA approved revision.
FAA holder: Enviro Systems Inc.
SR01427LAElectrical systems
Installation of Teledyne Battery Products G-641 and G-641S lead-acid battery.
FAA holder: Teledyne Battery Products
SR00716SEElectrical systems
Installation of Concorde RG500 battery in accordance with Aero-Jet Trading 'Installation Instructions Concorde Battery Hughes 500 & MD369 Series Helicopter' Manual Number AJ-369, Revision New, dated May 18, 1999, or later FAA approved revision.
FAA holder: Advanced Power Products
SR00409SEAircraft structures
Rapid removal door system hinges, installed in accordance with Certified Technology Installation Instructions CT9602-1, Revision C, dated January 1, 2000, or later FAA approved revision and manufactured in accordance with Certified Technology Drawing List CT9602, Revision E, dated January 10, 2000, or later FAA approved revision.
FAA holder: Certified Technology Inc
SR00125BOEngine and powerplant
Installation of a Pratt & Whitney Engine Services, Inc.-Honeywell IntelliStart Plus+TM Electronic Control System P/N DPU-K-010.
FAA holder: Pratt & Whitney Engine Services Inc.
SR01169LAOther aircraft modifications
Installation of Aerometals High Speed Acturator Assemblies, P/N 369X27001.
FAA holder: Aerometals
SH849NECargo and special mission
Installation of Utility Equipment Kit consisting of Cargo Mirror, Bearpaws and Bubble or Wedge Door Windows.
FAA holder: Dart Aero Accessories, Inc
SR01346NYAvionics
Installation of Navigation Lights with Vancouver Island Helicopter Master Document List V500-300-MDL, Rev 1, dated February 14, 2001.
FAA holder: Vancouver Island Helicopters
SR00981LALanding gear and brakes
Installation of landing gear strut assemblies.
FAA holder: Aerometals
SH201WEOther aircraft modifications
Installation of stirrup assemblies to directional control pedals for operation by handicapped pilot. (US ARMY OH-13E 205A).
FAA holder: Dallwig Barry C
SR09260RCAircraft structures
Installation of forward door and aft door bubble type windows.
FAA holder: Tech-Tool Plastics Inc
SR01062LAEngine and powerplant
Installation of Aerometals exhaust tailpipe outlet hangar assemblies, P/N 369X8236.
FAA holder: Aerometals
SR01041LAEngine and powerplant
Installation of engine compressor inspection panel in accordance with Installation Instructions RDE 109-20, Rev A, dated 5/10/00, or later FAA approved revisions.
FAA holder: Dodds Robert L (RDE)
SR00974LAOther aircraft modifications
Installation of Aerometals Low Speed Actuator Assemblies, P/N 369X7014.
FAA holder: Aerometals
SH667NWCabin and interiors
Installation of an auxiliary fuel tank in the aft passenger compartment.
FAA holder: Tower Aerospace, Inc