# NTSB CHI91DTG08: Grumman G164B, N8351K, Minto, ND, August 17, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 17, 1991, 07:15 local (12:15 UTC)
- Place: Minto, ND
- Coordinates: 48.289211, -97.36988 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.2892&lon=-97.3699&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 9, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 14877
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI91DTG08
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14877/pdf
- Page: https://openairdocs.org/ntsb/CHI91DTG08

## Probable cause

INADEQUATE AIRCRAFT SERVICING, INADEQUATE AIRCRAFT PREFLIGHT, FUEL CONTAMINATION, AND UNSUITABLE SOFT TERRAIN IN WHICH TO EFFECT AN EMERGENCY LANDING.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, maneuvering - aerial application
  - aircraft service - inadequate, pilot in command (cause)
  - fuel system - contamination (cause)
  - aircraft preflight - inadequate, pilot in command (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - none suitable (cause)
  - terrain condition - soft (cause)

## Analysis

THE PILOT HAD JUST COMPLETED A SWATH RUN DURING THE AERIAL APPLICATION FLIGHT WHEN THE ENGINE QUIT AT APPROXIMATELY 100 FEET AGL.  THE PILOT MADE A FORCED LANDING IN SOFT, CULTIVATED FIELD.  THE AIRCRAFT NOSED OVER AFTER 220 FEET OF LANDING ROLL.  THE INVESTIGATION REVEALED WATER CONTAMINATION IN THE AIRCRAFT FUEL SYSTEM.  THE OPERATOR'S UNDERGROUND FUEL STORAGE FACILITY WAS INSPECTED, AND CONTAINED EIGHT INCHES OF WATER.

## Aircraft

- Registration: [N8351K](https://openairdocs.org/aircraft/N8351K), registered now, S/N 658B, built 1980 (OpenAirDocs)
- Reported make and model: GRUMMAN G164B
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 658B
- Airframe hours: 3542
- Engines: P&W R985 14B 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Gaudry Ag Service, Inc., doing business as Minto Flying Service
- Registered owner: Gaudry Ag Service, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 20, 1991, 269 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; commercial; airplane ratings: single-engine sea, single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 5,541 total, 559 in this make and model, 5,449 as pilot in command, 251 in the last 90 days, 120 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 10 knots, gusting 15
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 68 °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 19910817034589A](https://openairdocs.org/incident/19910817034589A), Aug 17, 1991: Scwzer G164B, Minto, ND, Substantial damage. Engine quit on pull up from spray run. Nosed over in soft field. Water in fuel system and operators storage system

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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