# NTSB SEA85LA187: Grumman 164A, N5186, Shelley, ID, July 30, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 30, 1985, 09:00 local (15:00 UTC)
- Place: Shelley, ID
- Coordinates: 43.34029, -112.07032 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.3403&lon=-112.0703&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40217
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA85LA187
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40217/pdf
- Page: https://openairdocs.org/ntsb/SEA85LA187

## 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, maneuvering
  - fuel system,carburetor - inoperative (cause)
- Nose over, landing - roll
  - terrain condition - none suitable (contributing factor)
  - terrain condition - high vegetation (contributing factor)

## Analysis

THE SAFETY BROKE IN THE CARBURETOR AND THE SEAT BACKED OUT CAUSING FUEL STARVATION. THE CARBURETOR HAD BEEN OVERHAULED 350 HOURS PRIOR TO THE ACCIDENT.

## Aircraft

- Registration: [N5186](https://openairdocs.org/deregistered/N5186-1991-04-11), registration cancelled 1991-04-11, S/N 569 (OpenAirDocs)
- Reported make and model: GRUMMAN 164A
- Registry model: [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a) (registry code 3952704) (OpenAirDocs)
- Category: Airplane
- Serial number: 569
- Airframe hours: 5300
- Engines: P&W RT985 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: William Christensen
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 1, 1985
- Departed: SHELLEY, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 4,632 total, 250 in this make and model, 4,102 as pilot in command, 205 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 4 knots
- Visibility: 50 statute miles
- Lowest ceiling: 4,000 ft broken
- Temperature: 70 °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 19850730035399A](https://openairdocs.org/incident/19850730035399A), Jul 30, 1985: Scwzer G164A, Shelley, ID, Substantial damage. While returning to airport engine quit. Flipped over in wheat field. Safety broke in carburetor and seat backed out

## Other investigations on N5186 (1)

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.

- [NTSB MIA78DLA47](https://openairdocs.org/ntsb/MIA78DLA47), Aug 21, 1978: Grumman G-164A (N5186), Cairo, GA, destroyed

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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