# NTSB FTW83LA320: Grumman G-164A, N48374, Dayton, TX, July 4, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 4, 1983, 09:00 local (14:00 UTC)
- Place: Dayton, TX
- Coordinates: 30.049587, -94.890342 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.0496&lon=-94.8903&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20964
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA320
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20964/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA320

## 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, cruise - normal
  - lubricating system,oil seal - failure,total (cause)
- Forced landing, landing - flare/touchdown

## Analysis

THE AGRICULTURAL ACFT CRASHED 100 FT SHORT OF THE RWY AFTER THE ENGINE FAILED. THE PLT SAID THE ENGINE LOST POWER AND RPM SO HE DECIDED TO RETURN TO THE AIRSTRIP AFTER DUMPING HIS CHEMICAL LOAD. THE ENGINE FAILED COMPLETELY SHORT OF THE RWY. THE ACFT HIT A FENCE AND NOSED OVER DURING THE FORCED LANDING. POST ACCIDENT EXAMINATION REVEALED AN OIL SEAL HAD FAILED. OIL WENT THROUGH THE BLOWER INTO THE THE INTAKE VALVES AND FAILED THE ENGINE.

## Aircraft

- Registration: [N48374](https://openairdocs.org/aircraft/N48374), registered now, S/N 1619, built 1976 (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: 1619
- Airframe hours: 1619
- Engines: P&W R1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Liberty Air Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, March 26, 1983, 21 hours before
- Departed: DAYTONA, TX

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 14,427 total, 7,221 in this make and model, 14,390 as pilot in command, 143 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: 75 °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 19830704028539A](https://openairdocs.org/incident/19830704028539A), Jul 4, 1983: Scwzer G164A, Dayton, TX, Substantial damage. Engine lost partial power. Dumped load and tried for landing strip but hit short. Impeller shaft seal ruptured.

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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