# NTSB FTW83LA405: Grumman G-164B, N48687, East Bernard, TX, August 31, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: August 30, 1983, 19:15 local (Aug 31, 1983, 00:15 UTC)
- Place: East Bernard, TX
- Coordinates: 29.520893, -96.060653 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.5209&lon=-96.0607&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21036
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA405
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21036/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA405

## 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
  - eng assembly,blower/impeller/integral supercharger - failure,total (cause)
- In flight collision with object, takeoff
  - load jettison - performed, pilot in command (contributing factor)
  - climb - not possible, pilot in command (contributing factor)
  - terrain condition - high vegetation (contributing factor)
  - object - tree(s) (contributing factor)

## Analysis

DURING TAKEOFF, THE ENG HAD A PARTIAL LOSS OF POWER AFTER THE ACFT LIFTED OFF. THE PLT REPORTED THAT HE DUMPED HIS LOAD OF DEFOLIANT, BUT THE ACFT WOULD NOT CLIMB. SUBSEQUENTLY, IT SETTLED & COLLIDED WITH BRUSH & TREES. THE PLT ATTRIBUTED THE POWER LOSS TO A FAILED BLOWER.

## Aircraft

- Registration: [N48687](https://openairdocs.org/deregistered/N48687-2016-11-03), registration cancelled 2016-11-03, S/N 157B, built 1976 (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)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 167B
- Airframe hours: 2638
- Engines: P&W R-985-AN1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Rose & Sons Flying Service
- Airworthiness certificate: Special, Limited (Special)
- Last inspection: Annual, April 1, 1983
- Airport: Rose Private, runway 18, 1,800 ×  ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 7,807 total, 1,900 in this make and model, 200 in the last 90 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 180° at 2 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 86 °F, dew point 73 °F
- 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 19830830049639A](https://openairdocs.org/incident/19830830049639A), Aug 30, 1983: Scwzer G164B, East Bernard, TX, Destroyed. Crash occurred during emergency landing after engine failed just after liftoff.

## Other investigations on N48687 (3)

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 CEN15LA271](https://openairdocs.org/ntsb/CEN15LA271), Jun 12, 2015: Grumman Acft ENG Cor-Schweizer G 164B (N48687), Foster, NE, substantial damage. Probable cause: The total loss of engine power during a low-level aerial application flight due to fuel exhaustion following the pilot’s inadequate preflight inspection that led to his assumption that sufficient…
- [NTSB CHI92DTG04](https://openairdocs.org/ntsb/CHI92DTG04), Aug 14, 1992: Grumman G-164B (N48687), Grandin, ND, substantial damage. Probable cause: THE CRACKED CYLINDER WHICH RESULTED IN A FORCED LANDING. THE LACK OF SUITABLE TERRAIN ON WHICH TO MAKE AN EMERGENCY LANDING WAS A FACTOR.
- [NTSB CHI91DTG03](https://openairdocs.org/ntsb/CHI91DTG03), Jun 16, 1991: Schweizer G164 (N48687), Gwinner, ND, substantial damage. Probable cause: INADVERTENT CLOSING OF THE MIXTURE BY THE PILOT. FACTORS RELATED TO THE ACCIDENT ARE INADEQUATE CONTROL SHAPE, OR SIZE, AND INATTENTIVENESS OF THE PILOT.

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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