# NTSB SEA93LA038: Bellanca 7GCBC, N57659, Arco, ID, December 13, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 13, 1992, 16:30 local (23:30 UTC)
- Place: Arco, ID
- Coordinates: 43.650169, -113.279708 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6502&lon=-113.2797&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 14, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42970
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA93LA038
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42970/pdf
- Page: https://openairdocs.org/ntsb/SEA93LA038

## Probable cause

A LEAKING CRANKSHAFT OIL SEAL, AND SNOW ON THE LANDING AREA.

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise
  - lubricating system,oil seal - leak (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - snow covered (cause)

## Analysis

THE PILOT OF THE BELLANCA 7GCBC MADE A SUCCESSFUL TOUCHDOWN ON A SNOW COVERED DIRT ROAD AFTER LOSING A SUBSTANTIAL AMOUNT OF OIL FROM A LEAKING CRANKSHAFT OIL SEAL. DURING THE LANDING ROLL, THE AIRCRAFT NOSED OVER WHEN IT ENCOUNTERED SNOW APPROXIMATELY ONE FOOT DEEP.

## Aircraft

- Registration: [N57659](https://openairdocs.org/aircraft/N57659), registered now, S/N 624-74, built 1973 (OpenAirDocs)
- Reported make and model: BELLANCA 7GCBC
- Registry model: [Bellanca 7GCBC](https://openairdocs.org/model/bellanca-7gcbc) (registry code 1220601) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 624-74
- Engines: LYCOMING O-320-B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Gregory L. Poe
- Registered owner: Gregory L. Poe
- Airworthiness certificate: Standard, Aerobatic; Standard, Normal
- Last inspection: Annual, May 1, 1992, 155 hours before
- Departed: IDA, IDAHO FALLS, ID
- Destination: S67, NAMPA, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 1,095 total, 425 in this make and model, 1,014 as pilot in command, 86 in the last 90 days, 17 in the last 30 days, 2.9 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 7 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 10 °F, dew point 9 °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 19921213049809A](https://openairdocs.org/incident/19921213049809A), Dec 13, 1992: Bbavia 7GCBC, Acro, ID, Substantial damage. Lost oil from leaky crankshaft seal. Landed on snow covered dirt road. Nosed over in snowbank on road.

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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