# NTSB FTW83LA414: Grumman G-164A, N7699, Morse, LA, September 3, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 3, 1983, 08:30 local (13:30 UTC)
- Place: Morse, LA
- Coordinates: 30.119773, -92.490325 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.1198&lon=-92.4903&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): 21042
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA414
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21042/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA414

## 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, takeoff - initial climb
  - eng assembly,blower/impeller/integral supercharger - failure,total (cause)
- Forced landing, landing
  - load jettison - performed, pilot in command
  - terrain condition - high obstruction(s) (contributing factor)
- Nose over, landing
  - terrain condition - wet (contributing factor)
  - terrain condition - soft (contributing factor)

## Analysis

DURING A CLIMBING TURN AFTER TAKEOFF, THE ENG LOST POWER & STARTED SMOKING LIGHTLY. THE PLT DUMPED HIS CHEMICAL LOAD & WAS ABLE TO CLEAR A SET OF POWER LINES. HE THEN MADE A FORCED LANDING IN A FLOODED RICE FIELD WHERE THE ACFT NOSED OVER. AN INVESTIGATION REVEALED THAT 1 OF 3 BEARINGS, PN 12768, ON THE IMPELLER SHAFT OF THE ENG BLOWER HAD FAILED. THIS ALLOWED THE SHAFT TO SHIFT FORWARD & RUB HOLES IN THE COLLECTOR CASE ASSEMBLY, WHICH RESULTED IN THE ENG FAILURE.

## Aircraft

- Registration: [N7699](https://openairdocs.org/aircraft/N7699), registered now, S/N 1004, built 1972 (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 R-985-AN14BM1](https://openairdocs.org/engine/pratt-whitney-r-985-an14bm1) (registry code 51661, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1004
- Airframe hours: 5129
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Lewis Flying & Maintenance Ser
- Airworthiness certificate: Special, Restricted (Special)

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 5,480 total, 5,000 in this make and model, 5,400 as pilot in command, 130 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: none
- Altimeter: 29.00 inHg

## 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 19830903046269A](https://openairdocs.org/incident/19830903046269A), Sep 3, 1983: Scwzer G164A, Morse, LA, Substantial damage. Bearing failed on impeller shaft on takeoff climb. Landed after dumping load in a rice field and nosed over.

## Other investigations on N7699 (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 FTW81FRD28](https://openairdocs.org/ntsb/FTW81FRD28), Jun 4, 1981: Grumman G-164A (N7699), Morse, 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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