# NTSB ANC93LA047: Piper PA-12-150, N4182M, Anchorage, AK, March 19, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 19, 1993, 14:30 local (18:30 UTC)
- Place: Anchorage, AK
- Coordinates: 61.159999, -149.9897 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.1600&lon=-149.9897&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 3, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5871
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA047
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5871/pdf
- Page: https://openairdocs.org/ntsb/ANC93LA047

## Probable cause

THE COMPLETE LOSS OF ENGINE POWER DUE TO UNDETERMINED REASONS.  FACTOR WAS THE DEEP WATER FORCED LANDING AREA.

## Sequence of events

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

- Loss of engine power, cruise
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Ditching, descent - emergency
  - terrain condition - water
  - terrain condition - none suitable (contributing factor)

## Analysis

THE PILOT STATED HE HAD APPROXIMATELY 8 TO 10 GALLONS OF FUEL ON BOARD AND WHILE HE WAS CROSSING THE KNIK ARM THE ENGINE SPUTTERED ONCE AND THEN STOPPED PRODUCING POWER.  HE ATTEMPTED TO RESTART THE ENGINE WITH NO SUCCESS AND WAS FORCED TO LAND IN THE WATERS OF KNIK ARM.  THE AIRPLANE SANK AND WAS NOT RECOVERED.

## Aircraft

- Registration: [N4182M](https://openairdocs.org/aircraft/N4182M), registered now, S/N 12-3089, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-12-150
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 12-3089
- Engines: LYCOMING O-320-B2B 150 horsepower reciprocating
- Damage: Destroyed
- Flight: Business, Part 91
- Operator: Greer, Guy
- Registered owner: Greer, Guy
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 1, 1992, 60 hours before
- Departed: 15 W SKWENTNA, AK
- Destination: SKY HARBOR, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; private; airplane ratings: single-engine land; medical: class 3, invalid medical for flight; seat: front; flight hours: 450 total, 430 in this make and model, 450 as pilot in command, 25 in the last 90 days, 10 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Not reported
- Wind: 140° at 12 knots
- Visibility: 60 statute miles
- Lowest ceiling: none
- Temperature: 39 °F, dew point 21 °F
- Altimeter: 29.00 inHg
- Observed at: ANC, 5 nm away

## 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 19930319005789A](https://openairdocs.org/incident/19930319005789A), Mar 19, 1993: Piper PA12, Anchorage, AK, Destroyed. Lost power en route. Ditched in bay. Had noticed ice crystals in fuel while sumping drains.

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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