# NTSB MKC84LA210: Grumman G164B, N8222K, Mc Gehee, AR, July 9, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 9, 1984, 17:00 local (22:00 UTC)
- Place: Mc Gehee, AR
- Coordinates: 33.619224, -91.389457 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.6192&lon=-91.3895&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): 33740
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA210
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33740/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA210

## 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 - aerial application
  - fuel system,carburetor - loss,total (contributing factor)
  - maintenance,overhaul - improper, other maintenance personnel (contributing factor)
  - operation with known deficiencies in equipment - continued, pilot in command (cause)
  - fuel system,carburetor - leak (cause)
- Forced landing, descent - emergency
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - dirt bank/rising embankment (contributing factor)
- Nose over, landing - roll

## Analysis

THE ACFT WAS ENGAGED IN AN AERIAL APPLICATION FLT WHEN THE ENG LOST POWER. THE PLT MADE A FORCED LANDING IN A BEAN FIELD. DURING THE LANDING ROLL, THE ACFT STRUCK A LEVEE THAT WAS OBSCURED BY HIGH VEGETATION & NOSED OVER. A POST-ACCIDENT INVESTIGATION REVEALED THE CARBURETOR NEEDLE VALVE SEAT WAS LOOSE & ALLOWED FUEL TO BYPASS THE VALVE & ENTER THE INTAKE MANIFOLD. AN INTERVIEW WITH PERSONNEL THAT OVERHAULED THE CARBURETOR REVEALED THAT RECOMMENDED TORQUE VALVES WERE NOT BEING USED DURING INSTALLATION OF THE NEEDLE VALVE SEAT. AN INVESTIGATION ALSO REVEALED THAT PRIOR TO THIS FLT, THE ENG COULD NOT BE SHUT DOWN BY MOVING THE MIXTURE CONTROL TO THE 'CUT-OFF' POSITION. TO STOP THE ENG ON PREVIOUS FLTS, THE PLT USED THE FUEL SELECTOR VALVE BY MOVING IT TO THE 'OFF' POSITION.

## Aircraft

- Registration: [N8222K](https://openairdocs.org/aircraft/N8222K), registered now, S/N 617-B, built 1979 (OpenAirDocs)
- Reported make and model: GRUMMAN G164B
- Registry model: [Gulfstream-Schweizer A/C GULFSTREAM AM G-164B](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b) (registry code 3979904) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 617B
- Airframe hours: 2900
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Delta Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 17, 1984
- Departed: MC GEHEE, AR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; flight instructor, commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 8,634 total, 4,800 in this make and model, 8,334 as pilot in command, 275 in the last 90 days, 140 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 4 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 91 °F, dew point 73 °F
- Altimeter: 30.00 inHg
- Observed at: GLH, 23 nm away

## 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 19840709031379A](https://openairdocs.org/incident/19840709031379A), Jul 9, 1984: Scwzer G164B, Mcgehee, AR, Substantial damage. Carburetor needle valve seat loose. Engine quit. Had been using fuel selector to down engine after flights.

## Other investigations on N8222K (3)

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 CEN13LA519](https://openairdocs.org/ntsb/CEN13LA519), Aug 13, 2013: Gulfstream-Schweizer Gulfstream AM G 164B (N8222K), Eagle Lake, TX, substantial damage. Probable cause: The failure of one of the engine cylinders, which resulted in the total loss of engine power and subsequent forced landing.
- [NTSB FTW04LA227](https://openairdocs.org/ntsb/FTW04LA227), Aug 31, 2004: Grumman 164B (N8222K), East Bernard, TX, substantial damage. Probable cause: The loss of engine power as result of the failure of the number four cylinder. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW04LA182](https://openairdocs.org/ntsb/FTW04LA182), Jul 12, 2004: Gulfstream-Schweizer G-164B (N8222K), Eagle Lake, TX, substantial damage. Probable cause: The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.

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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