# NTSB investigations: Pratt & Whitney R-2800 series, AK

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 ANC24LA066](https://openairdocs.org/ntsb/ANC24LA066.md): Curtiss Wright C-46R · Kenai, AK · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2024 · N7848B · Substantial damage
  > An in-flight collision with birds during takeoff.
- [NTSB ANC19LA045](https://openairdocs.org/ntsb/ANC19LA045.md): Douglas C 118A · Buckland, AK · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2019 · N451CE · Substantial damage
  > The pilot's failure to maintain an adequate glidepath during the approach, which resulted in the airplane impacting rocks and dirt at the runway threshold, a separation of the right main landing gear, and a loss of directional control.
- [NTSB ANC18CA054](https://openairdocs.org/ntsb/ANC18CA054.md): Curtiss Wright C46 · Manley Hot Springs, AK · Accident · Minor injuries · Data collection · Final report · Jul 16, 2018 · N1822M · Substantial damage
  > The pilot's failure to attain the proper touchdown speed and his decision to land with a tailwind without ensuring that there was adequate runway length for the touchdown.
- [NTSB ENG14IA016](https://openairdocs.org/ntsb/ENG14IA016.md): Douglas C 118A · Emmonak, AK · Incident · No injuries · Incident investigation · Final report · Feb 25, 2014 · N351CE · Minor damage
  > The fatigue failure of the lower wing skin due to aging mechanisms. Contributing to the failure were lower wing skin inspection procedures insufficient to identify the crack.
- [NTSB ANC14CA012](https://openairdocs.org/ntsb/ANC14CA012.md): Douglas DC-6 · Nuiqsut, AK · Accident · No injuries · Data collection · Final report · Nov 25, 2013 · N100CE · Substantial damage
  > A load shift during takeoff, which resulted in substantial damage to the aft bulkhead and associated structures.
- [NTSB ANC13LA063](https://openairdocs.org/ntsb/ANC13LA063.md): Curtiss Wright C-46F · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Jul 3, 2013 · N1837M · Substantial damage
  > The failure of the right main landing gear side brace due to fatigue, which resulted in a collapse of the right main landing gear.
- [NTSB ANC11CA044](https://openairdocs.org/ntsb/ANC11CA044.md): Douglas DC-6B · Cold Bay, AK · Accident · No injuries · Data collection · Final report · Jun 12, 2011 · N600UA · Substantial damage
  > The flight crew's failure to extend the landing gear, which resulted in an inadvertent wheels up landing. Contributing to the accident was the flight crew's diverted attention.
- [NTSB ANC10FA067](https://openairdocs.org/ntsb/ANC10FA067.md): Fairchild C-123K · McKinley Park, AK · Accident · 3 fatal · Field investigation · Final report · Aug 1, 2010 · N709RR · Substantial damage
  > The pilot's failure to maintain adequate airspeed to avoid a low altitude stall, resulting in a loss of control and collision with terrain.
- [NTSB ANC03LA012](https://openairdocs.org/ntsb/ANC03LA012.md): Curtiss-Wright CW-46 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Oct 29, 2002 · N54514 · Substantial damage
  > The failure of the right main landing gear locking device to engage, which allowed the right main landing gear to collapse during taxi from landing.
- [NTSB ANC01LA034](https://openairdocs.org/ntsb/ANC01LA034.md): Douglas DC-6B · Crooked Creek, AK · Accident · No injuries · Limited investigation · Final report · Jan 31, 2001 · N4390F · Substantial damage
  > The flight crew's misjudged flare while landing. Factors associated with the accident were flat light conditions, snow-covered terrain, and an uphill runway grade.
- [NTSB ANC01LA009](https://openairdocs.org/ntsb/ANC01LA009.md): Curtis-Wright C-46F · Port Alsworth, AK · Accident · No injuries · Limited investigation · Final report · Oct 5, 2000 · N1822M · Substantial damage
  > The pilot's failure to maintain clearance during taxi. A factor associated with the accident was trees.
- [NTSB ANC85FA118](https://openairdocs.org/ntsb/ANC85FA118.md): Douglas DC-6A · Egegik, AK · Accident · Minor injuries · Field investigation · Final report · Jul 7, 1985 · N2878F · Destroyed
  > Airplane accelerated to v 1 and struck through on sandy beach. The nose pitched up and the pilot lost directional control. The airplane struck adjacent bank caught fire. It was totally destroyed.
- [NTSB ANC85LA057](https://openairdocs.org/ntsb/ANC85LA057.md): Curtiss C-46R · Nulato, AK · Accident · No injuries · Limited investigation · Final report · Mar 14, 1985 · N7848B · Substantial damage
  > The acft continued off the end of the rwy and contacted a snow berm during the landing roll. The plt reported the rwy braking action as poor.
- [NTSB ANC84IA103](https://openairdocs.org/ntsb/ANC84IA103.md): Fairchild C-82A · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jun 26, 1984 · N4753C · Minor damage
  > During arrival at the destination arpt, the aircrew was unable to extend the landing gear by using either the normal or emergency systems. They elected to return to Anchorage where emergency equipment was available. Fuel was reduced & subsequently a wheels up…
- [NTSB ANC83FA119](https://openairdocs.org/ntsb/ANC83FA119.md): Curtiss C-46A · Bettles, AK · Accident · Serious injuries · Field investigation · Final report · Jul 10, 1983 · N92853 · Substantial damage
  > Just after touchdown the acft rolled over a frost heave on the rwy surface and began veering to the right. The plt applied left brake and added pwr to the right eng but the acft continued going right until the right wing struck a hill adjacent to the right…
- [NTSB ANC83IA118](https://openairdocs.org/ntsb/ANC83IA118.md): Fairchild C-82A · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jul 7, 1983 · N9701F · Minor damage
  > The main landing gear collapsed after landing. The nose gearwas down & locked with a green light in the cockpit. There was no down & locked light illuminated for the main gear. Examination revealed signatures consistent with extreme overload as in attempting…
- [NTSB ANC83FA080](https://openairdocs.org/ntsb/ANC83FA080.md): Curtiss-Wright C-46F · King Salmon, AK · Accident · No injuries · Field investigation · Final report · May 21, 1983 · N1822M · Substantial damage
  > The coplt reported that the acft had been in level cruise flt aprx 1 min when they felt a vibration, followed by a loud bang. The aircrew saw fire & smoke coming from the left eng, so they shut down the eng & feathered the propeller. The plt also activated…
- [NTSB ANC82DA101](https://openairdocs.org/ntsb/ANC82DA101.md): Fairchild C-82A · Karluk, AK · Accident · No injuries · Final report · Sep 27, 1982 · N9701F · Substantial damage
  > The pilot reported that during arrival, the approach to landing seemed normal until just before touchdown. The aircraft touched down short of the runway threshold marks on relatively steep terrain in the safety zone. The pilot estimated that the touchdown…
- [NTSB ANC80FA097](https://openairdocs.org/ntsb/ANC80FA097.md): Fairchild C-82A · Goodnews Bay, AK · Accident · No injuries · Closed · Sep 3, 1980 · N9701F · Substantial damage
- [NTSB ANC80IA093](https://openairdocs.org/ntsb/ANC80IA093.md): Douglas DC-6 · Dillingham, AK · Incident · No injuries · Closed · Aug 26, 1980 · N2878F · Minor damage
- [NTSB ANC80IA073](https://openairdocs.org/ntsb/ANC80IA073.md): Fairchild C-82A · Aniak, AK · Incident · No injuries · Closed · Jul 24, 1980 · N8009E · Minor damage
- [NTSB ANC75AA086](https://openairdocs.org/ntsb/ANC75AA086.md): Curtis-Wrt C-46F · Barrow, AK · Accident · No injuries · Closed · May 17, 1975 · N800FA · Substantial damage
- [NTSB ANC75AA071](https://openairdocs.org/ntsb/ANC75AA071.md): Curtiss-Wrt C-46 · Deadhorse, AK · Accident · No injuries · Closed · Mar 27, 1975 · N4860V · Substantial damage
- [NTSB ANC75AA052](https://openairdocs.org/ntsb/ANC75AA052.md): Curtiss-Wrt C-46F · Arctic Village, AK · Accident · No injuries · Closed · Jan 22, 1975 · N1663M · Substantial damage
- [NTSB ANC74AA072](https://openairdocs.org/ntsb/ANC74AA072.md): Curtis-Wrt C-46 · Fairbanks, AK · Accident · No injuries · Closed · May 13, 1974 · N1663M · 2 aircraft · Minor damage
- [NTSB ANC68A0025](https://openairdocs.org/ntsb/ANC68A0025.md): Curtiss-Wrt C-46A · Fairbanks, AK · Accident · No injuries · Closed · Oct 13, 1967 · N92853 · Substantial damage
- [NTSB ANC67A0056](https://openairdocs.org/ntsb/ANC67A0056.md): Curtiss-Wrt C-46 · Anchorage, AK · Accident · No injuries · Closed · Mar 17, 1967 · N1663M · Substantial damage
- [NTSB UNK65X0918](https://openairdocs.org/ntsb/UNK65X0918.md): Curtiss C46 · Oliktok Pt, AK · Accident · No injuries · Closed · Dec 4, 1964 · N4860V · Substantial damage

## 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."eventStateOrRegion" = 'AK' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52026'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52026&state=AK

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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.