# Fatal NTSB investigations: Dehavilland DHC-6 TWIN OTTER

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB NYC08FA218](https://openairdocs.org/ntsb/NYC08FA218.md): Dehavilland DHC6 · Hyannis, MA · Accident · 1 fatal · Field investigation · Final report · Jun 18, 2008 · N656WA · Substantial damage
  > The pilot's failure to remove the flight control lock prior to takeoff. Contributing to the accident was the Federal Aviation Administration's failure to issue an airworthiness directive making the manufacturer's previously-issued flight control lock service…
- [NTSB CHI06FA210](https://openairdocs.org/ntsb/CHI06FA210.md): de Havilland DHC-6-100 · Sullivan, MO · Accident · 6 fatal · Class 1 · Field · Final report · Jul 29, 2006 · N203E · Substantial damage
  > the pilot's failure to maintain airspeed following a loss of power in the right engine due to the fracturing of compressor turbine blades for undetermined reasons. Contributing to some parachutists' injuries was the lack of a more effective restraint system…
- [NTSB MIA05LA096](https://openairdocs.org/ntsb/MIA05LA096.md): de Havilland DHC-6 · Deland, FL · Accident · 1 fatal · Limited investigation · Final report · Apr 23, 2005 · N24HV · Substantial damage
  > The pilot's inadequate visual lookout.
- [NTSB FTW01LA132](https://openairdocs.org/ntsb/FTW01LA132.md): de Havilland DHC-6 Twin Otter · Fentress, TX · Accident · 1 fatal · Limited investigation · Final report · May 27, 2001 · N125PM · Minor damage
  > the King Air pilot's inadequate in-flight planning/decision in that he failed to remain in the agreed on formation position, resulting in one of his skydiver's contacting the propeller of the de Havilland airplane. A contributing factor was the lack of total…
- [NTSB MIA98LA031](https://openairdocs.org/ntsb/MIA98LA031.md): de Havilland DHC-6-6 · Elberta, AL · Accident · 1 fatal · Limited investigation · Final report · Nov 8, 1997 · N1022S · Minor damage
  > a passenger's inadvertent encounter with a rotating propeller.
- [NTSB MIA96LA135](https://openairdocs.org/ntsb/MIA96LA135.md): de Havilland DHC-6 · Raeford, NC · Accident · 1 fatal · Limited investigation · Final report · Apr 27, 1996 · N716NC · No damage
  > failure of the passenger to follow the instructions of ground personnel as she exited the aircraft.
- [NTSB FTW95LA309](https://openairdocs.org/ntsb/FTW95LA309.md): de Havilland DHC-6 · Belen, NM · Accident · 1 fatal · Limited investigation · Final report · Jul 23, 1995 · N926MA · No damage
  > The parachutist's failure to follow procedures on exiting the aircraft. A factor was the parachutist's incapacitation due to hitting his head on the doorway floor.
- [NTSB LAX92MA183](https://openairdocs.org/ntsb/LAX92MA183.md): de Havilland DHC-6-200 · Perris, CA · Accident · 16 fatal · Major investigation · Final report · Apr 22, 1992 · N141PV · Destroyed
  > The pilot-in-command's inadvertent feathering of the wrong propeller following an engine power loss, and the failure of the operator to assure that the pilot was provided with adequate training in the airplane. Factors related to the accident were: water…
- [NTSB DCA89MA076](https://openairdocs.org/ntsb/DCA89MA076.md): de Havilland DHC-6-300 · Grand Canyon, AZ · Accident · 10 fatal · Class 1 · Major · Final report · Sep 27, 1989 · N75GC · Destroyed
  > Improper pilot techniques and crew coordination during the landing attempt, bounce, and attempted go-around.
- [NTSB BFO88FA067](https://openairdocs.org/ntsb/BFO88FA067.md): de Havilland DHC-6-200 · Chantilly, VA · Accident · 1 fatal · Field investigation · Final report · Jul 20, 1988 · N7267 · Destroyed
  > The pilot inadvertently misused the flaps, by failing to set the flaps to the proper setting. The flaps were set full down. This caused the aircraft to pitch up steeply after liftoff. Additionally, the flight control lock was probably installed during some…
- [NTSB DCA86AA028](https://openairdocs.org/ntsb/DCA86AA028.md): de Havilland DHC-6-300 · Grand Canyon, AZ · Accident · 25 fatal · Final report · Jun 18, 1986 · N76GC · 2 aircraft · Destroyed
  > At about 0933 MST, Dehavilland DHC-6, N76GC, (owned & operated by Canyon airlines) & bell 206B, N6TC, (operated by heliteck) collided while on sightseeing flts over the Grand Canyon national park. After colliding in flt, both acft crashed & burned in the…
- [NTSB NYC86FA006](https://openairdocs.org/ntsb/NYC86FA006.md): de Havilland DHC-6 · Homer City, PA · Accident · 1 fatal · Field investigation · Final report · Oct 12, 1985 · N3257 · Destroyed
  > The acft was observed flying at low altitude along about a 5 mile distance. Some witnesses described the acft altitude as just above treetops. Witness heard engine sounds and saw lights on the acft. The acft flight was on a southeast direction before it…
- [NTSB FTW83LA177](https://openairdocs.org/ntsb/FTW83LA177.md): de Havilland DHC-6 · Mckinney, TX · Accident · 1 fatal · Limited investigation · Final report · Apr 3, 1983 · N927BA · No damage
  > Three observers accompanied the aircrew & other passengers on a flt to transport skydivers aloft. Prior to the flt, all 3 of the observers were briefed not to exit the acft until the engines were secured. However, 1 of the 3 discussed the need to move a…
- [NTSB DCA79AA019](https://openairdocs.org/ntsb/DCA79AA019.md): Dehavilland DHC-6 · Hyannis, MA · Accident · 1 fatal · Closed · Jun 17, 1979 · N383EX · Destroyed
- [NTSB DCA79AA018](https://openairdocs.org/ntsb/DCA79AA018.md): Dehavilland DHC-6 · Rockland, ME · Accident · 17 fatal · Closed · May 30, 1979 · N68DE · Destroyed
- [NTSB DCA79AA003](https://openairdocs.org/ntsb/DCA79AA003.md): Dehavilland DHC-6 · Steamboat Spgs, CO · Accident · 2 fatal · Closed · Dec 4, 1978 · N25RM · Destroyed
- [NTSB ANC79FA004](https://openairdocs.org/ntsb/ANC79FA004.md): Dehavnd Can DHC-6 · Barrow, AK · Accident · 1 fatal · Closed · Oct 13, 1978 · N4048B · Substantial damage
- [NTSB DEN78FA020](https://openairdocs.org/ntsb/DEN78FA020.md): Dehavilland DHC-6 · Pueblo, CO · Accident · 3 fatal · Closed · Jan 18, 1978 · N982FL · Destroyed
- [NTSB DCA77AA026](https://openairdocs.org/ntsb/DCA77AA026.md): Dehavilland DHC-6 · Iliamna, AK · Accident · 13 fatal · Closed · Sep 6, 1977 · N563MA · Destroyed
- [NTSB DCA77AA006](https://openairdocs.org/ntsb/DCA77AA006-201379.md): Dehavilland DHC-6 · Wildwood, NJ · Accident · 3 fatal · Closed · Dec 12, 1976 · N101AC · Destroyed
- [NTSB OAK73DJY01](https://openairdocs.org/ntsb/OAK73DJY01.md): Dehavilland DHC-6 · Tha Tam Blng, Laos · Accident · 3 fatal · Closed · Jul 25, 1972 · N5662 · Destroyed
- [NTSB DCA72AZ012](https://openairdocs.org/ntsb/DCA72AZ012.md): Dehavilland DHC-6 · Appleton, WI · Accident · 13 fatal · Closed · Jun 29, 1972 · N4043B · 2 aircraft · Destroyed
- [NTSB ANC70A0021](https://openairdocs.org/ntsb/ANC70A0021.md): Dehavilland DHC-6 · Sagwon, AK · Accident · 2 fatal · Closed · Sep 6, 1969 · N2711N · Destroyed
- [NTSB NYC70A0010](https://openairdocs.org/ntsb/NYC70A0010.md): Dehavilland DHC-6 · Jamaica, NY · Accident · 3 fatal · Closed · Jul 15, 1969 · N558MA · Destroyed

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2802606'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&model=2802606

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.