# NTSB ANC88LA092: Piper PA-12, N7958H, Illiamna, AK, July 18, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 18, 1988, 14:00 local (22:00 UTC)
- Place: Illiamna, AK
- Coordinates: 59.850601, -154.560241 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=59.8506&lon=-154.5602&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report April 14, 1989
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5035
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5035/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA092

## Sequence of events

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

- On ground/water collision with object, takeoff - roll/run
  - terrain condition - high obstruction(s) (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - terrain condition - loose gravel/sandy (contributing factor)
  - directional control - not maintained, pilot in command (cause)

## Analysis

DURING THE TAKEOFF ROLL ON THE BEACH, THE AIRCRAFT STRUCK A LARGE ROCK AND THE PILOT LOST DIRECTIONAL CONTROL OF THE AIRCRAFT.

## Aircraft

- Registration: [N7958H](https://openairdocs.org/aircraft/N7958H), registered now, S/N 12-860, built 1946 (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 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 12860
- Airframe hours: 3444
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Craig C. Coggins
- Registered owner: Craig C. Coggins
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 30, 1987, 88 hours before
- Destination: HOM, HOMER, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 74 total, 70 in this make and model, 60 as pilot in command, 44 in the last 90 days, 29 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 20 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 48 °F
- Altimeter: 30.00 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 19880718031399A](https://openairdocs.org/incident/19880718031399A), Jul 18, 1988: Piper STCPA12, Iliamna, AK, Substantial damage. Student struck large rock on takeoff roll from gravel bar. Aircraft ground looped damaging plane. Had 2 passengers.

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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