# NTSB MIA86LA198: Grumman G-164A, N6603, Okolona, MS, July 3, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 3, 1986, 16:45 local (21:45 UTC)
- Place: Okolona, MS
- Coordinates: 33.999507, -88.749885 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.9995&lon=-88.7499&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31666
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86LA198
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31666/pdf
- Page: https://openairdocs.org/ntsb/MIA86LA198

## Sequence of events

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

- Loss of engine power, cruise
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (cause)

## Analysis

WHILE IN CRUISE FLT AT 100 FEET EN ROUTE TO THE SPRAYING AREA THE ENGINE 'SPIT' TWICE AND QUIT COMPLETELY. DURING A FORCED LANDING IN A FIELD THE AIRCRAFT ENCOUNTERED MUD AND NOSED OVER COMING TO REST INVERTED. THE ENGINE HAD 100 HOURS BEFORE IT WAS TO BE OVERHAULED. THE CAUSE OF THE FAILURE WAS NOT DETERMINED.

## Aircraft

- Registration: [N6603](https://openairdocs.org/deregistered/N6603-1990-01-02), registration cancelled 1990-01-02, S/N 741 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a) (registry code 3952704) (OpenAirDocs)
- Category: Airplane
- Serial number: 741
- Airframe hours: 5576
- Engines: P&W R1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Lowry Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, September 20, 1985, 38 hours before
- Departed: OKOLONA, MS

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 2,620 total, 50 in this make and model, 2,470 as pilot in command, 150 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 3 knots
- Lowest ceiling: none
- Temperature: 84 °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 19860703030629A](https://openairdocs.org/incident/19860703030629A), Jul 3, 1986: Scwzer G164A, Okolona, MS, Substantial damage. Engine failed inflight. During the emergency landing in a field, mud caused the aircraft to nose over.

## Other investigations on N6603 (2)

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 FTW79DRD32](https://openairdocs.org/ntsb/FTW79DRD32), May 22, 1979: Grumman G-164A (N6603), Lake Arthur, LA, substantial damage
- [NTSB FTW79FPD19](https://openairdocs.org/ntsb/FTW79FPD19-202534), Mar 15, 1979: Grum Amer G-164 (N6603), Lake Arthur, LA, substantial damage

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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