SA3532NMPropellers
Installation of Hartzell/Raisbeck Quiet Turbofan Propeller System. Suitable for DHC-6-300 airplanes with PT6A-27 engines.
FAA holder: Raisbeck Engineering Inc.
Aircraft STC directory
Bombardier DHC-6-300 STCs
The Jun 30, 2026 FAA DRS snapshot contains 31 selected supplemental type certificates with status Current whose public applicability data names the Bombardier DHC-6-300. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
31
listed Current at snapshot
20
holder directories
9
modification categories
Sep 1, 2023
latest recorded revision
Modification demand surface
Other aircraft modifications11
Avionics6
Cabin and interiors3
Propellers2
Aircraft structures2
Engine and powerplant2
Safety and emergency equipment2
Electrical systems2
Aircraft connectivity1
Recorded holders
Rockwell Collins Inc3NOAA Aircraft Operations Center3Seaton Engineering Corp.2Gottlieb Corporation dba Air Transport Industries2Garmin AT Inc.2SMR Technologies Inc2Rocky Mountain Aircraft2Raisbeck Engineering Inc.1Chelton Flight Systems Inc.1Ontic Engineering and Manufacturing Inc.1Electronics International1Wipaire Inc1Thunder Bay Aviation Ltd1Avidyne Corporation1Western Avionics1JAARS Inc.1MidCanada Mod Center1Structural Integrity Engineering1JA Air Center1Rosen Sunvisor Systems LLC1
Recently revised DHC-6-300 STCs
Showing the 31 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA01800SE (PG 2)Avionics
Fabrication and installation of new or replacement of existing instrument panel lights dimmer control.
FAA holder: Seaton Engineering Corp.
SA01861SE (PAGE 2)Other aircraft modifications
Fabrication and installation of Landing Light Controller.
FAA holder: Seaton Engineering Corp.
SA02232AKAvionics
Installation of FlightLogic Synthetic Vision Electronic Flight Instrument System (EFIS).
FAA holder: Chelton Flight Systems Inc.
SA3321NMCabin and interiors
Installation of a cabin compartment combination airstair and cargo door.
FAA holder: Gottlieb Corporation dba Air Transport Industries
SA570NWCabin and interiors
Installation of new interior nterior panel.
FAA holder: Gottlieb Corporation dba Air Transport Industries
SA01473SE (2 OF 5)Other aircraft modifications
Installation of a GTX 32 (mode C), GTX 33 (mode S), or GTX 33D (mode S with diversity) Remote Transponde.
FAA holder: Garmin AT Inc.
SA250CEPropellers
Installation of Woodward electronic propeller synchraphaser system.
FAA holder: Ontic Engineering and Manufacturing Inc.
SA01306WI-DAvionics
Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation.
FAA holder: Rockwell Collins Inc
SA1259NWAircraft structures
Installation of Air Transport Industries ATI75100-1 door.
FAA holder: Air Transport Industries
SA235NWCabin and interiors
Modification of cabin compartment irstair door.
FAA holder: Air Transport Industries
SA01046CHEngine and powerplant
Installation of SMR Technologies engine inlet anti-icer models.
FAA holder: SMR Technologies Inc
SA02204NYOther aircraft modifications
Installation of an L-3 Skywatch HP TCAS 1 System.
FAA holder: Rocky Mountain Aircraft
SA00680SE (4 OF 6Engine and powerplant
Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.
FAA holder: Electronics International
SA01313WI-DOther aircraft modifications
Modification of a Collins TVI-920/TVI-920D Vertical Speed/TCAS Indicator installation in accordance with Collins Drawing Index as listed on AML No. SA01313WI-D, Revision -, or later FAA approved revision.
FAA holder: Rockwell Collins Inc
SA100CHOther aircraft modifications
Installation of Pratt & Whitney PT6A-34 engines.
FAA holder: Wipaire Inc
SA01929NYOther aircraft modifications
Installation of Thunder Bay Aviation utility passenger seats.
FAA holder: Thunder Bay Aviation Ltd
SA00161BO (2 OF 3Avionics
Installation of Avidyne Corporation FlightMax 700-00007-( ) EX500 Multi-Function Display.
FAA holder: Avidyne Corporation
SA01487SE (2 OF 5)Aircraft connectivity
Installation 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.
FAA holder: Garmin AT Inc.
SA02022NYSafety and emergency equipment
Installation of a Honeywell MK VI Enhanced Ground Proximity Warning System (GPWS).
FAA holder: Western Avionics
SA02655AT (1 OF 2)Other aircraft modifications
Installation of JAARS Model F5K Automatic Flight Following System (AFFS) in Helio H-295 type aircraft.
FAA holder: JAARS Inc.
SA01945NYOther aircraft modifications
Cockpit voice recorder replacement with Universal CVR 30B or CVR 120.
FAA holder: MidCanada Mod Center
SA01885NYAvionics
Installation of Dual Garmin GNS-430 or GNS-530 GPS/Nav/Comm System.
FAA holder: Rocky Mountain Aircraft
SA00948CHOther aircraft modifications
Installation of various de-icer wire harnesses. (E90 modified by STC SA3593NM, F90 modified by STC SA4131NM, B200 modified by STC SA2698NM-S, DHC-6 Series modified by STC SA3532NM).
FAA holder: SMR Technologies Inc
SA00364LAAircraft structures
Retirement life extension of de Havilland DHC-6-300 wing in accordance with FAA approved Structural Integrity Engineering Master Drawing List SIE-23-900, Revision B, dated April 7, 1997, or later FAA approved revision.
FAA holder: Structural Integrity Engineering
SA02740ATElectrical systems
Installation of a Scientific Electrical System in accordance with Master Drawing List No. MDL-48-MSES-01, Revision O, dated October 31, 2002 or later FAA-Approved revision.
FAA holder: NOAA Aircraft Operations Center
SA02742ATElectrical systems
Installation of a Scientific Electrical System in accordance with Master Drawing List No. MDL-57-MSES-01, Revision O, dated October 31, 2002 or later FAA-Approved revision.
FAA holder: NOAA Aircraft Operations Center
SA02743ATOther aircraft modifications
Installation of an Air Chemistry Modification for aircraft serial number 740 in accordance with RT Aerospace Engineering Report R-RTDHC65300.100 dated 6/19/95 No Change titled Drawing List & Structural Substantiation; Multiple Equipment Installations, N.O.A.A DeHavilland Twin Otter DHC-6 N48RF or later FAA-Approved revision.
FAA holder: NOAA Aircraft Operations Center
SA01871CHSafety and emergency equipment
Installation of a Honeywell Mark VI Enhanced Ground Proximity Warning System (EGPWS). Limited to installation on serial number 815 ONLY.
FAA holder: JA Air Center
SA3529NMOther aircraft modifications
Cockpit sun visor installation.
FAA holder: Rosen Sunvisor Systems LLC