Fixed Wing Multi Engine · as of Sep 21, 2026
Resources Manufacturer · Viking Air (DHC heritage) ↗ TCDS A9EA ↗ Type Club · DHC-2 Beaver Club ↗
Distribution · currently registered
By state (top 10)
- NV 25.0% 1
- TX 25.0% 1
- UT 25.0% 1
- CA 25.0% 1
By decade of manufacture
- 1960s 25.0% 1
- Unknown 75.0% 3
NTSB records
No NTSB-recorded events match DEHAVILLAND DHC-6 in the indexed corpus.
Research papers
- NASA NTRS 2019 · Contractor Report (CR) DHC-6 Twin Otter Tailplane Airfoil Section Testing in the Ohio State University 7x10 Wind Tunnel Ice contaminated tailplane stall (ICTS) has been found to be responsible for 16 accidents with 139 fatalities over the last three decades, and is suspected to have played a role in other accidents and…
- NASA NTRS 2019 · Reprint (Version printed in journal) In-Flight Aerodynamic Measurements of an Iced Horizontal Tailplane The effects of tailplane icing on aircraft dynamics and tailplane aerodynamics were investigated using, NASA's modified DHC-6 Twin Otter icing research aircraft.
- NASA NTRS 2019 · Reprint (Version printed in journal) Investigation of Dynamic Flight Maneuvers With an Iced Tailplane A detailed analysis of two of the dynamic maneuvers, the pushover and elevator doublet, from the NASA/FAA Tailplane Icing Program are discussed.
Airworthiness directives
7 directive(s) on file. Showing the most recent 7.
- Dec 12, 2005
Airworthiness Directives; Shadin ADC-2000 Air Data Computers
The FAA adopts a new airworthiness directive (AD) for certain Shadin ADC-2000 air data computers (ADC) installed on airplanes. This AD requires you to replace affected ADC-2000 units with a modified unit. This AD results from reports that certain ADC-2000 units display incorrect altitude information on the Electronic…
- Sep 9, 2005
Airworthiness Directives; Goodrich De-icing and Specialty Systems “FASTprop” Propeller De-icers
The FAA is adopting a new airworthiness directive (AD) for Goodrich De-icing and Specialty Systems "FASTprop" propeller de- icers, part numbers P4E1188 series, P4E1601 series, P4E2200 series, P4E2271-10, P4E2575-7, P4E2575-10, P4E2598-10, P5855BSW, P6199SW, P6592SW, P6662SW, and P6975-11, installed. This AD requires i…
- Aug 17, 2005
Airworthiness Directives; Shadin ADC-2000 Air Data Computers
The FAA proposes to adopt a new airworthiness directive (AD) for certain Shadin ADC-2000 air data computers (ADC) installed on airplanes. This proposed AD would require you to replace affected ADC- 2000 units with a modified unit. This proposed AD results from reports that certain ADC-2000 units display incorrect alti…
- Apr 6, 2005
Airworthiness Directives; Goodrich De-icing and Specialty Systems “FASTprop” Propeller De-icers
The FAA proposes to adopt a new airworthiness directive (AD) for Goodrich De-icing and Specialty Systems "FASTprop" propeller de- icers, part numbers P4E1188 series, P4E1601 series, P4E2200 series, P4E2271-10, P4E2575-7, P4E2575-10, P4E2598-10, P5855BSW, P6199SW, P6592SW, P6662SW, and P6975-11, installed. This propose…
- Feb 14, 2001
Airworthiness Directives; Marathon Power Technologies Company
This document proposes adopting a new airworthiness directive (AD) for certain nickel cadmium batteries produced by Marathon Power Technologies Company (Marathon). The AD would require visually inspecting screws installed on Marathon batteries and replacing certain unairworthy screws. This proposal is prompted by an e…
- May 7, 1997
Airworthiness Directives; de Havilland DHC-6 Series Airplanes
This document clarifies information in an existing airworthiness directive (AD) that applies to de Havilland DHC-6 series airplanes that do not have a certain wing strut modification (Modification 6/1581) incorporated. That AD currently requires inspecting the wing struts for cracks or damage (chafing, etc.), replacin…
- Apr 26, 1996
Airworthiness Directives; Hartzell Propeller Inc. HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC-B4T, and HC-B5M Series Propellers
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. (Hartzell) HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC- B4T, and HC-B5M series propellers. This proposal would require hub replacement over a 10-year time period with a concurrent blade and blade clamp inspec…
Supplemental type certificates · 10 on file
- 04/09/2010 STC SA00269BO (2 OF 3) Installation of Avidyne Corporation TWX 670 Tactical Weather Detection System P/N 850-00026-000-( ) consisting of Avidyne Processor P/N 700-00033-000-( ), Sensor Systems Inc. Anten… Avidyne Corporation DRS ↗
- 12/30/2008 STC SA00269BO (2 OF 3) Installation of Avidyne Corporation TWX 670 Tactical Weather Detection System P/N 850-00026-000-( ) consisting of Avidyne Processor P/N 700-00033-000-( ), Sensor Systems Inc. Anten… Avidyne Corporation DRS ↗
- 07/22/2008 STC SA01861SE (PAGE 2) Fabrication and installation of Landing Light Controller Seaton Engineering Corp. DRS ↗
- 05/21/2008 STC SA01473SE (2 OF 5) Installation of a GTX 32 (mode C), GTX 33 (mode S), or GTX 33D (mode S with diversity) Remote Transponde Garmin AT Inc. DRS ↗
- 04/07/2008 STC SA00269BO (2 OF 3) Installation of Avidyne Corporation TWX 670 Tactical Weather Detection System P/N 850-00026-000-( ) consisting of Avidyne Processor P/N 700-00033-000-( ), Sensor Systems Inc. Anten… Avidyne Corporation DRS ↗
- 01/04/2008 STC SA01800SE (PG 3) Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. Seaton Engineering Corp. DRS ↗
- 12/18/2007 STC SA4005NM (Page 1) Precise Flight Inc. Pulselite Control System Precise Flight Inc DRS ↗
- 11/05/2006 STC SA01933LA (2 OF 5) Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System Garmin AT Inc. DRS ↗
- 02/26/2003 STC SA39CH Installation of amphibian landing gear position advisory system. Lake & Air Inc DRS ↗
- 03/09/1993 STC SA1626NM Page 1 Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series) Electronics International DRS ↗
PMA replacement parts · 60+ on file
- 1193VRW#https://drs.faa.gov/browse/excelExternalWindow/FE131ECC8552F31686257F0700735220.0001## Marker- Closed Aero Decals Inc replaces C61005653
- AAT-711419#https://drs.faa.gov/browse/excelExternalWindow/F9157A3B581800ED86257F80004A9ECA.0001## Piston Tube Advantage Aviation Technologies, Inc. replaces DeHavilland P/N 71-141-9
- AAT-711419#https://drs.faa.gov/browse/excelExternalWindow/0BFB86343020BE5B86257C2E006A9E15.0001## Piston Tube Advantage Aviation Technologies, Inc. replaces DeHavilland P/N 71-141-9
- AAT-711419#https://drs.faa.gov/browse/excelExternalWindow/E5B0BC655F81CABD8625792D00628DFD.0001## Piston Tube Advantage Aviation Technologies, Inc. replaces DeHavilland P/N 71-141-9
- MDL PF6-1000#https://drs.faa.gov/browse/excelExternalWindow/CADA6C2C8193D3ED8625782900530D48.0001## Fail Lights, Pitot Heater IKHANA Aircraft Services replaces Modification Part
- MDL PF6-1000#https://drs.faa.gov/browse/excelExternalWindow/503295F8684373548625793600567194.0001## Fail Lights, Pitot Heater IKHANA Aircraft Services replaces Modification Part
- MDL PF6-1000#https://drs.faa.gov/browse/excelExternalWindow/ABED2191629E5A81862576DD0050102B.0001## Fail Lights, Pitot Heater IKHANA Aircraft Services replaces Modification Part
- 213666#https://drs.faa.gov/browse/excelExternalWindow/B6CB105C6D4FFAE3862573CA00593C33.0001## Synchronizer Kits Woodward Inc replaces -
- AB16B12#https://drs.faa.gov/browse/excelExternalWindow/C7C78B6588DDB14186257417007BB3CD.0001## Rivet Aero Brake & Spares Inc replaces GY16B12 For use on ABS (Goodyear) Brake assembly P/N 5001571-4 and 5001571-6
- ABWA182-5#https://drs.faa.gov/browse/excelExternalWindow/3F63A3D051AB25328625740300743279.0001## Washer Aero Brake & Spares Inc replaces GWA182-5, Rev.C For use on ABS (Goodyear) Wheel Assy-Main P/N 5000444-3
- 00625001 or 00625100#https://drs.faa.gov/browse/excelExternalWindow/454EA51DEB31CCA7862573FD0073DE07.0001## Underseat Baggage Restraint Bar Devore Aviation Corp of America replaces -
- 00600001#https://drs.faa.gov/browse/excelExternalWindow/008C03DE7E0F99ED862573FD0073D2DC.0001## Emblem Light -Stabilizer Devore Aviation Corp of America replaces -
- C38214#https://drs.faa.gov/browse/excelExternalWindow/311330C212A5CEA686257EF300681426.0001## Adaptor Parker Hannifin Corp replaces C38214
- C38214#https://drs.faa.gov/browse/excelExternalWindow/2C5356E786DEB0F586257EF30067DFC1.0001## Adaptor Parker Hannifin Corp replaces C38214
- MA150-301#https://drs.faa.gov/browse/excelExternalWindow/BE81EAEE1205042186257B9500678031.0001## Air Conditioner Installation DHC-6 Twin Otter Kit ZEE Systems Inc replaces Modification Part
- K43-R134#https://drs.faa.gov/browse/excelExternalWindow/BEF00665E4A6281C86257B9500678035.0001## Modification Kit ZEE Systems Inc replaces Modification Part
- A5529VWB#https://drs.faa.gov/browse/excelExternalWindow/D87840C30C5DA56786257B740072B2BF.0001## Marker- Stripe Aero Decals Inc replaces C6CE132727
- DHC6-000#https://drs.faa.gov/browse/excelExternalWindow/5074E020EB6F69848625782900530D1B.0001## Freon Air Conditioning System IKHANA Aircraft Services replaces DHC6-000
- WR6-1002-61#https://drs.faa.gov/browse/excelExternalWindow/F6A218AD2749A0698625782900530CF2.0001## Re-Life Wing Box R/H IKHANA Aircraft Services replaces Modification Part
- WR6-1002-59#https://drs.faa.gov/browse/excelExternalWindow/7BA02677CC6853DA8625782900530CC2.0001## Re-Life Wing Box L/H IKHANA Aircraft Services replaces Modification Part
- DHC6-000#https://drs.faa.gov/browse/excelExternalWindow/2056E775A7B71F848625793600567159.0001## Freon Air Conditioning System IKHANA Aircraft Services replaces DHC6-000
- WR6-1002-61#https://drs.faa.gov/browse/excelExternalWindow/2755D77DDF6FD8F3862579360056711F.0001## Re-Life Wing Box R/H IKHANA Aircraft Services replaces Modification Part
- WR6-1002-59#https://drs.faa.gov/browse/excelExternalWindow/6F84EA0692B835168625793600567024.0001## Re-Life Wing Box L/H IKHANA Aircraft Services replaces Modification Part
- DHC6-000#https://drs.faa.gov/browse/excelExternalWindow/A9F4C6FCCD5B458B862576DD00501075.0001## Freon Air Conditioning System IKHANA Aircraft Services replaces DHC6-000
- WR6-1002-61#https://drs.faa.gov/browse/excelExternalWindow/E2AF5341D7626B9D862576DD00500FEE.0001## Re-Life Wing Box R/H IKHANA Aircraft Services replaces Modification Part
- WR6-1002-59#https://drs.faa.gov/browse/excelExternalWindow/7FDCEDA7C2E866E0862576DD00500F4D.0001## Re-Life Wing Box L/H IKHANA Aircraft Services replaces Modification Part
- PDMC6WM1409-33#https://drs.faa.gov/browse/excelExternalWindow/A0B2B863A5AECF08862570AF00745D06.0001## Bushing PMA Design & Manufacturing replaces C6WM1409-33
- PDMC6WM1409-31#https://drs.faa.gov/browse/excelExternalWindow/167D98FB0D40BC4B862570AF0074544E.0001## Bushing PMA Design & Manufacturing replaces C6WM1409-31
- PDMC6WM1409-29#https://drs.faa.gov/browse/excelExternalWindow/9EEDCC18C6E8ED10862570AF00744BD6.0001## Bushing PMA Design & Manufacturing replaces C6WM1409-29
- 250SG115Q#https://drs.faa.gov/browse/excelExternalWindow/2153E1215374B076862576F0004FD482.0001## Starter- Generator Skurka Aerospace Inc replaces Modification Part
- 951#https://drs.faa.gov/browse/excelExternalWindow/49F68CE0686A438A862573BD005DBB35.0001## Right Windshield LP Aero Plastics Inc replaces DehavillandC6FS1207-28
- 950#https://drs.faa.gov/browse/excelExternalWindow/1C9F3CAA8EF400DF862573BD005DBB1F.0001## Left Windshield LP Aero Plastics Inc replaces DehavillandC6FS1207-27
- P/N C6SC1062-4#https://drs.faa.gov/browse/excelExternalWindow/0C192AAC2048935986257FFE005BECF9.0001## R/H Windshield PPG Industries Inc replaces Dehavilland P/N C6SC1062-4 Rev. G or later FAA approval
- P/N C6SC1062-3#https://drs.faa.gov/browse/excelExternalWindow/AB448B63CA811F7886257FFE005BEC39.0001## L/H Windshield PPG Industries Inc replaces Dehavilland P/N C6SC1062-3 Rev. G or later FAA approval
- 7350721-7#https://drs.faa.gov/browse/excelExternalWindow/049C19AB921E1D9D8525703D005E0741.0001## Mount Installation Engine Hutchinson Aerospace & Industry Inc replaces DeHavilland 7350721-7
- 7350721-8#https://drs.faa.gov/browse/excelExternalWindow/F36E7F567214F1D18525703D005E0742.0001## Mount Installation Engine Hutchinson Aerospace & Industry Inc replaces DeHavilland 7350721-8
- 7350721-8#https://drs.faa.gov/browse/excelExternalWindow/2DA9537B1B6F14288525703D005E0D57.0001## Isolator Assembly Hutchinson Aerospace & Industry Inc replaces DeHavilland 7350721-8
- ST-472#https://drs.faa.gov/browse/excelExternalWindow/95D494E36A439A88862575540062BFF5.0001## Autopilot S-TEC Corporation replaces -
- Dwg No. 992-1486-001#https://drs.faa.gov/browse/excelExternalWindow/BCE82007BC6B76C68525704A005B226A.0001## APS-65 Autopilot Installation Kit Rockwell Collins Inc. replaces Boeing of Canada Ltd., de Havilland Division 992-1486-001
- 7350721-7#https://drs.faa.gov/browse/excelExternalWindow/B8134FAFDB8FE0328525703D005E0D56.0001## Isolator Assembly Hutchinson Aerospace & Industry Inc replaces DeHavilland 7350721-7
+ 20 more PMA parts on file
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 4
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available