# N4040W: 1957 Dehavilland BEAVER DHC-2 MK.1

- Status: Valid registration
- Airframe: [Dehavilland BEAVER DHC-2 MK.1](https://openairdocs.org/model/dehavilland-beaver-dhc-2-mk-1) (registry code 2800102, 8 seats)
- Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008)
- Serial number: 1147
- Year built: 1957
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Certificate issued: July 2, 2024
- Expires: July 31, 2031
- Mode S code: A4BDEA
- Registered owner: [Sourdough Air Service Inc](https://openairdocs.org/faa-owner/SOURDOUGH%20AIR%20SERVICE%20INC)
- Location: [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks)
- Owner type: Corporation
- Owner's area on the map: 64.8378° N, 147.7164° W: Placed by OpenAirDocs: center of Fairbanks, AK, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4040W
- Page: https://openairdocs.org/aircraft/N4040W

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R-985 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Dehavilland BEAVER DHC-2 MK.1)

None in force.

### Matched by engine (Pratt & Whitney R-985 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC22LA056](https://openairdocs.org/ntsb/ANC22LA056), Jul 15, 2022: Dehavilland Beaver DHC-2 MK.1 (N4040W), Bettles, AK, substantial damage. Probable cause: The pilot's failure to maintain control of the airplane during taxi operations on a riverbank with shallow water.
- [NTSB ANC06LA109](https://openairdocs.org/ntsb/ANC06LA109), Aug 2, 2006: de Havilland DHC-2 MK.1 (N4040W), Anaktuvuk Pass, AK, substantial damage. Probable cause: The pilot's failure to abort the takeoff at his predetermined reference point, which resulted in a collision with the shore during takeoff-initial climb, and structural damage to the airplane.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20220715011049A](https://openairdocs.org/incident/20220715011049A), Jul 15, 2022: Dehavilland BEAVER DHC-2 MK.1 (N4040W), Bettles, AK, Substantial damage. Airman attempted river landing in DHC-2 ases [privacy data omitted] while operating part 135 . Pilot lost directional control while "on step" and impacted left…
- [Accident 20060801015849A](https://openairdocs.org/incident/20060801015849A), Aug 1, 2006: Dhav DHC2MK1 (N4040W), Bettles, AK, Substantial damage. (-23) [privacy data omitted] pilot continued take off, striking shore and damaging floats, instead of aborting the takeoff.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N4040W

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4040W before.

- [Cancelled 1967-01-14](https://openairdocs.org/deregistered/N4040W-1967-01-14): Piper PA-32-300, S/N 32-40056. Exported to France. Owner: [Piper Aircraft Corp](https://openairdocs.org/faa-owner/PIPER%20AIRCRAFT%20CORP), [Lock Haven, PA](https://openairdocs.org/faa-place/PA/Lock%20Haven)

## Related

- Other Dehavilland BEAVER DHC-2 MK.1 aircraft: https://openairdocs.org/model/dehavilland-beaver-dhc-2-mk-1/aircraft.md
- The Pratt & Whitney R-985 series engine: https://openairdocs.org/engine/pratt-whitney-r-985-series.md

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