# NTSB ATL87DKG05: Schweizer G-164A, N8881H, Summerdale, AL, July 30, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 30, 1987, 07:30 local (12:30 UTC)
- Place: Summerdale, AL
- Coordinates: 30.480068, -87.699913 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.4801&lon=-87.6999&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 1, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 7242
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL87DKG05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7242/pdf
- Page: https://openairdocs.org/ntsb/ATL87DKG05

## Sequence of events

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

- Loss of engine power, climb - to cruise
  - eng assembly,blower/impeller/integral supercharger - failure,total (cause)
- Nose over, landing - roll
  - terrain condition - ditch (contributing factor)

## Analysis

THE PILOT WAS ABOUT TO ENGAGE IN AN AERIAL APPLICATION OPERATION. DURING CLIMB THE ENGINE LOST POWER, THE CHEMICAL LOAD WAS DUMPED AND THE AIRPLANE WAS LANDED IN AN ADJACENT FIELD. ON ROLLOUT THE AIRPLANE HIT A DITCH AND NOSED OVER. EXAMINATION OF THE ENGINE DISCLOSED THAT AN IMPELLER BUSHING IN THE SUPERCHARGER HAD FAILED. METAL PARTICLES WERE FOUND THROUGHOUT THE INDUCTION SYSTEM INCLUDING THE CYLINDERS, THE INTAKE VALVES, AND THE EXHAUST VALVES. THE METAL PARTICLES WERE FROM THE DAMAGED IMPELLER.

## Aircraft

- Registration: [N8881H](https://openairdocs.org/deregistered/N8881H-2013-05-15), registration cancelled 2013-05-15, S/N 1559, built 1975 (OpenAirDocs)
- Reported make and model: SCHWEIZER 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: 1559
- Airframe hours: 2957
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Charles Bonner, doing business as Bonners Aerial Service
- Registered owner: Charles Bonner
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 1, 1987, 200 hours before
- Departed: NONE, SUMMERDALE, AL
- Airport: Ag Strip

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 5,000 total, 1,000 in this make and model, 4,700 as pilot in command, 150 in the last 90 days, 50 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 81 °F
- Altimeter: 30.00 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 19870730040559A](https://openairdocs.org/incident/19870730040559A), Jul 30, 1987: Scwzer G164A, Summerdale, AL, Substantial damage. Engine failed on takeoff. Hit a ditch and flipped over on forced landing. Impeller bushing in blower had failed.

## Other investigations on N8881H (2)

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 ATL89DKJ03](https://openairdocs.org/ntsb/ATL89DKJ03), May 22, 1989: Grumman G-164A (N8881H), Loxley, AL, substantial damage. Probable cause: THE LOSS OF ENGINE POWER DUE TO CARBURETOR ICE, AND THE PILOT'S IMPROPER USE OF CARBURETOR HEAT.
- [NTSB MIA79FKQ16](https://openairdocs.org/ntsb/MIA79FKQ16), Jul 13, 1979: Grumman G-164A (N8881H), Batesville, MS, 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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