# NTSB ANC92LA173: Piper PA-12, N2464M, Kasilof, AK, September 16, 1992

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: September 16, 1992, 14:00 local (22:00 UTC)
- Place: Kasilof, AK
- Coordinates: 60.27959, -151.260437 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.2796&lon=-151.2604&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report August 13, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5812
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC92LA173
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5812/pdf
- Page: https://openairdocs.org/ntsb/ANC92LA173

## Probable cause

THE PILOT IN COMMAND'S INADVERTANT POWER OFF STALL ENTRY RESULTING IN THE COLLISION WITH THE TERRAIN.

## Sequence of events

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

- In flight collision with terrain/water, takeoff - initial climb
  - stall/mush - inadvertent, pilot in command (cause)

## Analysis

FOLLOWING A NORMAL TAKEOFF THE PILOT CLIMBED AT A STEEPER THAN NORMAL RATE.  A BACKFIRE WAS HEARD BY THE PILOT WHO REACTED BY RAPIDLY CLOSING THE THROTTLE WITHOUT LOWERING THE NOSE.  THE AIRPLANE ENTERED A POWER OFF STALL.  THE PILOT APPLIED POWER IMMEDIATELY AND THE ENGINE RESPONDED NORMALLY, ALBEIT TOO LATE TO RECOVER FROM THE FLAT IMPACT WITH THE RUNWAY, SUBSTANTIALLY DAMAGING THE AIRPLANE AND SERIOUSLY INJURING THE PILOT.

## Aircraft

- Registration: [N2464M](https://openairdocs.org/aircraft/N2464M), registered now, S/N 12-1548, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-12
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 12-1548
- Airframe hours: 107
- Engines: LYCOMING O-290-0Z 135 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Eugene C. Rosenquist
- Registered owner: Eugene C. Rosenquist
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 8, 1991, 52 hours before
- Airport: 5KS, Kasilof, runway 36, 2,165 × 40 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land; seat: front; flight hours: 3,500 total, 2,500 in this make and model, 45 in the last 90 days, 15 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Temperature: 50 °F

## 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 19920916036999A](https://openairdocs.org/incident/19920916036999A), Sep 16, 1992: Piper PA12, Kasilof, AK, Substantial damage. Rotated to steep angle on takeoff. Engine backfired. Closed throttle nose high and stalled. Impact flat on runway.

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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