# NTSB MKC88LA133: Grumman 164A, N8706H, Poplar Bluff, MO, July 19, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 19, 1988, 17:15 local (22:15 UTC)
- Place: Poplar Bluff, MO
- Coordinates: 36.758998, -90.400215 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.7590&lon=-90.4002&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 2, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 34608
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC88LA133
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34608/pdf
- Page: https://openairdocs.org/ntsb/MKC88LA133

## 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, approach
  - fuel system,carburetor float - loose (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - none suitable (contributing factor)
  - terrain condition - water

## Analysis

THE PILOT EXPERIENCED AN ENGINE FAILURE WHILE ATTEMPTING TO LAND DURING AN AERIAL APPLICATION FLIGHT. ALTITUDE WAS NOT ADEQUATE TO SELECT A SUITABLE FORCED LANDING AREA. THE AIRCRAFT IMPACTED IN A PIPELINE RIGHT OF WAY AND CAME TO REST IN A SMALL STREAM, INVERTED. EXAMINATION OF THE ENGINE REVEALED THAT THE CARBURETOR FLOAT SUPPORT BRACKET SHAFT WAS LOOSE.

## Aircraft

- Registration: [N8706H](https://openairdocs.org/deregistered/N8706H-2004-02-20), registration cancelled 2004-02-20, S/N 1481, built 1975 (OpenAirDocs)
- Reported make and model: GRUMMAN 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 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1481
- Airframe hours: 2661
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Rh & Rh Inc.
- Registered owner: Robbie Hopwood
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 16, 1988, 160 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 3,200 total, 3,000 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 4 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 73 °F
- Altimeter: 29.00 inHg
- Observed at: CGI, 84 nm away

## 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 19880719027199A](https://openairdocs.org/incident/19880719027199A), Jul 19, 1988: Scwzer G164A, Poplar Bluff, MO, Substantial damage. Reported engine failed while spraying. Nosed over on forced landing.

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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