# NTSB FTW86LRD18: Grumman G-164A, N6718Q, Bastrop, LA, July 25, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 25, 1986, 08:30 local (13:30 UTC)
- Place: Bastrop, LA
- Coordinates: 32.770206, -91.900993 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.7702&lon=-91.9010&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): 22141
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86LRD18
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22141/pdf
- Page: https://openairdocs.org/ntsb/FTW86LRD18

## Sequence of events

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

- Loss of engine power, maneuvering
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
  - load jettison - initiated, pilot in command
- Nose over, landing - flare/touchdown
  - landing gear,main gear - failure,total
  - landing gear,main gear - overload

## Analysis

THE ACFT CAME TO REST INVERTED WITH THE ENGINE UNDER WATER AFTER A POWER LOSS AND FORCED LANDING. THE PLT STATED THAT HE STARTED LOSING POWER IN THE TURN TO LINE UP FOR HIS FIRST AERIAL APPLICATION RUN. THE ACFT SETTLED TO GROUND IMPACT IN A LANDING ATTITUDE DESPITE FULL THROTTLE AND JETTISON OF LOAD. THE LEFT LANDING GEAR BROKE OFF ON AN EMBANKMENT AND THE ACFT NOSED OVER INTO A WATER FILLED DITCH. SINCE THE ENGINE WAS SUBMERGED FOR SEVERAL DAYS NO ENGINE TEARDOWN WAS ACCOMPLISHED. NO MALFUNCTIONS WERE FOUND DURING THE ON-SITE INVESTIGATION. THERE WERE NO WITNESSES TO THE ACCIDENT.

## Aircraft

- Registration: [N6718Q](https://openairdocs.org/deregistered/N6718Q-1988-10-06), registration cancelled 1988-10-06, S/N 1712 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Category: Airplane
- Serial number: 1712
- Airframe hours: 3232
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Jasper W. Grant
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 1, 1986

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 4,275 total, 2,325 in this make and model, 3,994 as pilot in command, 237 in the last 90 days, 80 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none

## 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 19860725035199A](https://openairdocs.org/incident/19860725035199A), Jul 25, 1986: Scwzer G164A, Bastrop, LA, Destroyed. While maneuvering for a spray run aircraft settled to the ground. Flipped over in a ditch. No malfunctions found.

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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