Replacement of de Havilland wing bleed air ducting with alternate ducting.
FAA holder: Texas Air Services Inc.
Aircraft STC directory
Viking Air DHC-6-300 STCs
The Jun 30, 2026 FAA DRS snapshot contains 91 selected supplemental type certificates with status Current whose public applicability data names the Viking Air DHC-6-300. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
91
listed Current at snapshot
30
holder directories
13
modification categories
Apr 15, 2026
latest recorded revision
Modification demand surface
Recorded holders
Rocky Mountain Aircraft27Kenn Borek Air Limited7IKHANA Group Inc.6Thunder Bay Aviation Ltd4PMA Design & Manufacturing Inc.4IKHANA Aircraft Canada Inc.4Texas Air Services Inc3Wipaire Inc2Rockwell Collins Inc2Benz Airborne Systems2FFC Manufacturing2Kaman Corporation Aircraft Wheel and Brake LLC1Kilroy Aviation LLC1Honeywell International Inc1Acorn Welding Ltd.1Aerocorp Avionic Solutions Inc1Aero Dynamix Inc.1S-TEC Corporation1Unity Aviation Canada Ltd.1Aviation Specialties Unlimited Inc.1
Recently revised DHC-6-300 STCs
Showing the 91 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
Installation of Cabin Interior Upgrade.
FAA holder: De Havilland Aircraft of Canada Limited
Installation of the Nose Cone Research Provisions.
FAA holder: Rocky Mountain Aircraft
Installation of the Replacement Aluminum Cargo Floor Panels.
FAA holder: Rocky Mountain Aircraft
Installation of the Radar Altimeter Mounts (Structural Provisions Only).
FAA holder: Rocky Mountain Aircraft
Installation of High Back Seat Modification.
FAA holder: Kenn Borek Air Ltd.
Decommission of Standard Operators Options (S.O.O.) 6095 Fuel System.
FAA holder: Kenn Borek Air Ltd.
Installation of Elevator Replacement Trailing Edge.
FAA holder: Rocky Mountain Aircraft
Install Aircraft Wheel and Brake CONVERSION Kit 199-92, N/C.
FAA holder: KAMAN Corporation Aircraft Wheel and Brake LLC
Main Wheel and Brake Assembly for the Viking Air DHC-6 Series aircraft.
FAA holder: PMA Design and Manufacturing
Activation of the Garmin GTN 750 (Xi) TAWS-A.
FAA holder: Rocky Mountain Aircraft
Installation of LED Replacement Cockpit Panels.
FAA holder: Rocky Mountain Aircraft
Installation of Pitot Heat Indication System.
FAA holder: Rocky Mountain Aircraft
Installation of Engine Chip Detectors.
FAA holder: Rocky Mountain Aircraft
Replacement of Fixed Wing Control Cables.
FAA holder: Thunder Bay Aviation Ltd
Replacement latches on upper and lower cargo door.
FAA holder: PMA Design & Manufacturing Inc.
Installation of IKHANA Aircraft Services wing box assembly.
FAA holder: IKHANA Group Inc.
Installation of Acorn Welding C6SC1107-NG Exhaust stacks.
FAA holder: Acorn Welding Ltd.
Installation of the Emergency Cabin Lighting System.
FAA holder: Aerocorp Avionic Solutions Inc
Installation of Type 1 (PAA Design group) DHC-6 Twin Otter Seats.
FAA holder: Regent Aircraft Services
Installation of the 27" X 36" Fuselage Cut-Out with FS 281 - 321.
FAA holder: Rocky Mountain Aircraft
Installation of IKHANA Station 332 Bulkhead Door.
FAA holder: IKHANA Aircraft Canada Inc.
Removal of the Beta Back-up System.
FAA holder: Kenn Borek Air Limited
Installation of the Replacement Cabin Roof Escape Hatch.
FAA holder: Rocky Mountain Aircraft
Installation of an S-TEC 01326 Digital Flight Control System (DFCS).
FAA holder: S-TEC Corporation
Circuit Breaker Panel replacement.
FAA holder: Unity Aviation Canada Ltd
Installation of Bick Airstair door.
FAA holder: PMA Design & Manufacturing Inc.
Installation of the VIP Club Seating.
FAA holder: IKHANA Aircraft Canada Inc.
Installation of the LED Master Caution Panel.
FAA holder: Rocky Mountain Aircraft
Installation of a Supplemental Lighting System.
FAA holder: Aviation Specialties Unlimited Inc.
Installation of the PMA Design and Manufacturing nose landing gear (NLG) shock strut assembly.
FAA holder: PMA Design & Manufacturing Inc.
Installation of Pitot Heat Failure Warning System.
FAA holder: Kenn Borek Air Limited
Installation of Enhanced Air Conditioning System.
FAA holder: IKHANA Aircraft Canada Inc.
Installation of freon air-conditioning system.
FAA holder: Air Comm Corporation
Installation of Cabin Interior Replacement Kit.
FAA holder: Kenn Borek Air Limited
Installation of the Replacement Cabin Ceiling Panels.
FAA holder: Kenn Borek Air Limited
Installation of the Hydraulic Pump Cutoff Switch.
FAA holder: Kenn Borek Air Limited
Installation of the Ceiling Panels.
FAA holder: Kenn Borek Air Limited
Installation of a Cockpit (crew) Oxygen System.
FAA holder: IKHANA Aircraft Canada Inc.
Installation of SMR Technologies pneumatic de-icer models.
FAA holder: SMR Technologies Inc
Installation of the Research Provisions.
FAA holder: Rocky Mountain Aircraft
Installation of a 27" X 36" Fuselage Cut-out (Research Compartment).
FAA holder: Rocky Mountain Aircraft
Installation of a Lexavia LFS-3505 Enhanced Vision System (EVS).
FAA holder: Lexavia Integrated Systems
Installation of a replacement electrically driven hydraulic pump assembly.
FAA holder: Texas Air Services Inc
Installation of Crew Only Supplementary Oxygen System.
FAA holder: Rocky Mountain Aircraft
Installation of Avionics Shelves/Equipment Racks.
FAA holder: Rocky Mountain Aircraft
Installation of the TB44 Lithium Ion Battery System.
FAA holder: Avmax Aviation Services Inc
Installation of the replacement Fuel Quantity Indicating System (FQIS).
FAA holder: Rocky Mountain Aircraft
Installation of auxiliary power unit, two air cycle machines and optical viewport.
FAA holder: MIT Lincoln Laboratory
Installation of the Replacement Fuel Manifold Tubes.
FAA holder: Rocky Mountain Aircraft
Installation of JLC Aeronautical Vapor Cycle Air Conditioner.
FAA holder: JLC Aeronautical LLC
Installation of Universal Avionics TAWS, Class A.
FAA holder: Rocky Mountain Aircraft
Installation of 4-Blade MT-Propeller (Model# MTV-16-1-E-C-F-R(P) / CFR240-55).
FAA holder: MT- Propeller Entwicklung GmbH
Installation of single Garmin GTN-650 or GTN-750 GPS/NAV/COMM.
FAA holder: Rocky Mountain Aircraft
Installation of a Single or Dual Scandel ST3400 TAWS/RMI System.
FAA holder: Rocky Mountain Aircraft
Installation of the PT6A-34 Engines derated to 620 SHP, in lieu of PT6A-27 engines.
FAA holder: Rocky Mountain Aircraft
Installation of a Benz Airborne Systems torque Pressure System.
FAA holder: Benz Airborne Systems
Installation OF A Benz Airborne Systems Oil Pressure System.
FAA holder: Benz Airborne Systems
Installation of either Universal Avionics CVR-120A or CVR-120R Cockpit Voice Recorder.
FAA holder: Rocky Mountain Aircraft
Installation of a Time Trac Data Recorder.
FAA holder: P2 Incorporated
Installation of two (2) digital Turbine Temperature (T5) Indicators and two (2) circuit breakers.
FAA holder: PMA Design & Manufacturing Inc.
Main Landing Gear Compression Block installation.
FAA holder: Thunder Bay Aviation Ltd
Installation of replacement fuel cell assemblies.
FAA holder: FFC Manufacturing
Installation of Substitute Passenger Cabin and Cargo Baggage Floor Composite Panels.
FAA holder: Rocky Mountain Aircraft
Installation of Universal Avionics CVR-30B Cockpit Voice Recorder.
FAA holder: Rocky Mountain Aircraft
Removal of deHavilland P/N C6FF1870-15 and installation of Improved Utility Seat Support TBC6FF1870-15.
FAA holder: Thunder Bay Aviation Ltd
Installation of 130 gallon auxiliary fuel tank in the passenger compartment. (DHC-6-300 restricted category).
FAA holder: Twin Otter International Ltd.
Installation of emblem lights at mid span of horizontal stabilizer.
FAA holder: DeVore Aviation Corporation of America, a New Mexico Corporation