# NTSB ANC90LA129: Piper PA-31, N27425, Naked Island, AK, August 2, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 2, 1990, 11:40 local (19:40 UTC)
- Place: Naked Island, AK
- Coordinates: 60.790672, -145.610427 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.7907&lon=-145.6104&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5415
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA129
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5415/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA129

## Probable cause

A LEFT ENGINE FAILURE FOR UNDETERMINED REASONS.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, cruise
  - 1 engine
  - powerplant - undetermined (cause)
- Forced landing, descent - emergency
  - propeller system/accessories,feathering system - inoperative
  - propeller feathering - not attained
- Ditching, descent - emergency

## Analysis

THE PILOT STATED THAT THE LEFT ENGINE FAILED INFLIGHT AND WOULD NOT RESTART.  SUBSEQUENTLY, HE WAS FORCED TO DITCH THE AIRCRAFT IN THE OCEAN. THE PILOT WAS NOT INJURED, BUT THE AIRCRAFT SANK INTO 1200 TO 1400 FEET OF WATER AND WAS NOT RECOVERED.    ,

## Aircraft

- Registration: [N27425](https://openairdocs.org/deregistered/N27425-1991-05-24), registration cancelled 1991-05-24, S/N 317752174 (OpenAirDocs)
- Reported make and model: PIPER PA-31
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110) (OpenAirDocs)
- Category: Airplane
- Serial number: 7752174
- Engines: LYCOMING TIO-540-J2BD 350 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Gary Graham
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 1, 1990, 40 hours before
- Departed: CDV, CORDOVA, AK
- Destination: ANC, ANCHORAGE, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial, flight instructor; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 14,000 total, 300 in this make and model, 14,000 as pilot in command, 200 in the last 90 days, 70 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 6 knots
- Visibility: 20 statute miles
- Lowest ceiling: 5,000 ft broken
- Temperature: 61 °F, dew point 39 °F
- Altimeter: 29.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19900802029579A](https://openairdocs.org/incident/19900802029579A), Aug 2, 1990: Piper PA31350, Naked Island, AK, Substantial damage. Left engine failed. Unable to feather prop or hold altitude. Ditched.

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.

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