# NTSB FTW84LA185: Grumman G-164A, N9936, Eunice, LA, April 4, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 3, 1984, 18:30 local (Apr 4, 1984, 00:30 UTC)
- Place: Eunice, LA
- Coordinates: 30.489051, -92.410438 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.4891&lon=-92.4104&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21298
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84LA185
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21298/pdf
- Page: https://openairdocs.org/ntsb/FTW84LA185

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - engine assembly,cylinder - cracked (cause)
  - maintenance,major repair - inadequate, other maintenance personnel (cause)
- Forced landing, landing
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE PLT REPORTED THAT THE ENGINE LOST POWER ON TAKEOFF AND RETURN TO THE RWY WAS NOT POSSIBLE, SO HE LANDED ON THE EDGE OF A POND. A POST ACCIDENT INVESTIGAITON REVEALED A CRACK IN THE #7 CYL HEAD BETWEEN THE SPARK PLUG HOLES. THE ENGINE HAD JUST GOTTEN A MAJOR OVERHAUL. THIS WAS A MAINTENANCE TEST FLT. THE PLT RECOMMENDED BETTER OVERHAUL PROCEDURES FOR THE REPAIR STATION.

## Aircraft

- Registration: [N9936](https://openairdocs.org/aircraft/N9936), registered now, S/N 1359, built 1974 (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)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1359
- Airframe hours: 2066
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 91
- Registered owner: Roland Fontenot
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, April 2, 1984, 0 hours before
- Departed: EUNICE, LA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 5,000 total, 785 in this make and model, 5,000 as pilot in command, 50 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 345° at 2 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 72 °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 19840403027999A](https://openairdocs.org/incident/19840403027999A), Apr 3, 1984: Scwzer G164A, Eunice, LA, Substantial damage. Engine failed on a test hop after installation. Stall landed in water and flipped over. NR7 cylinder had cracked.

## Other investigations on N9936 (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 MIA76DKK02](https://openairdocs.org/ntsb/MIA76DKK02), Sep 9, 1976: Grumman G-164A (N9936), Ashford, AL, 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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