# Colvin O-520-EXP

- Type: Engine model (FAA registry)
- Registry code: 16900
- Manufacturer (registry): COLVIN
- Model: O-520-EXP
- Engine type: Reciprocating
- Power: 300 hp
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/colvin-o-520-exp

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (2)

- [N64337](https://openairdocs.org/aircraft/N64337): [Clearwater Airco LLC](https://openairdocs.org/faa-owner/CLEARWATER%20AIRCO%20LLC), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1977, S/N 18052891
- [N95KD](https://openairdocs.org/aircraft/N95KD): [Clarkson Mike](https://openairdocs.org/faa-owner/CLARKSON%20MIKE), [Holly Springs, MS](https://openairdocs.org/faa-place/MS/Holly%20Springs), S/N 91F232-01

## 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 ANC97LA060](https://openairdocs.org/ntsb/ANC97LA060), Apr 21, 1997: Cessna 180K (N64337), Soldotna, AK, substantial damage. Probable cause: the pilot's inadequate compensation for cross conditions and failure to maintain directional control of the airplane. A factor relating to the accident was: the variable/gusty/crosswind condition.
- [NTSB ANC96LA003](https://openairdocs.org/ntsb/ANC96LA003), Oct 7, 1995: Cessna 180K (N64337), Cold Bay, AK, substantial damage. Probable cause: the pilot's selection of an unsuitable area/terrain for landing. The submerged sandbar was a related factor.

## 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 19970421006309A](https://openairdocs.org/incident/19970421006309A), Apr 21, 1997: Cessna 180K (N64337), Soldotna, AK, Substantial damage. Tundra tire equipped 180 veered off runway and nosed over landing. Directional control reduced by tundra tires.
- [Accident 19951007037009A](https://openairdocs.org/incident/19951007037009A), Oct 7, 1995: Cessna 180K (N64337), Cold Bay, AK, Substantial damage. Floatplane struck submerged sandbar on coming off step from water landing nosed over. Floated upside down.

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