# NTSB FTW88DRD05: Grumman G-164B, N6676K, Bastrop, LA, May 28, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: May 28, 1988, 14:15 local (19:15 UTC)
- Place: Bastrop, LA
- Coordinates: 32.77, -91.899818 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.7700&lon=-91.8998&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report July 3, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 22489
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW88DRD05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22489/pdf
- Page: https://openairdocs.org/ntsb/FTW88DRD05

## Sequence of events

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

- Airframe/component/system failure/malfunction, maneuvering - aerial application
  - lubricating system,oil cooler - cracked (cause)
  - fluid,oil - leak (cause)
  - fluid,oil - exhaustion (cause)
  - propeller feathering - uncontrolled
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE PLT SAID HE WAS SPREADING RICE WHEN HE NOTICED THE OIL PRESSURE WAS DECREASING & THE PROP WAS BEGINNING TO FEATHER. WITH NO OTHER PLACE TO GO, HE LANDED IN A PLOWED FIELD. SHORTLY AFTER TOUCHDOWN, THE ACFT NOSED OVER TO AN INVERTED POSITION. AN EXAM REVEALED THAT A LOSS OF OIL & OIL PRESSURE WAS DUE TO A CRACK IN THE OIL COOLER.

## Aircraft

- Registration: [N6676K](https://openairdocs.org/aircraft/N6676K), registered now, S/N 17 C (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Category: Airplane
- Serial number: 17C
- Airframe hours: 4922
- Engines: P&W PT6A-34AG 750 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: William C. Norsworthy, doing business as Bonne Idee Aero Services, Inc.
- Registered owner: Bonne Idee Aero Services, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 15, 1988, 104 hours before
- Departed: NONE, MER ROUGE, LA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 3,117 total, 900 in this make and model, 3,117 as pilot in command, 50 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point -0 °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 19880528016589A](https://openairdocs.org/incident/19880528016589A), May 28, 1988: Scwzer G164C, Bastrop, LA, Substantial damage. Lost oil pressure on a spray run. Shut down engine and nosed over in soft dirt. Engine oil cooler cracked, lost oil

## Other investigations on N6676K (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 FTW95LA009](https://openairdocs.org/ntsb/FTW95LA009), Oct 3, 1994: Grumman G-164B (N6676K), Oak Grove, LA, substantial damage. Probable cause: THE PILOT MISJUDGED CLEARANCE FROM THE VEHICLE.

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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