# NTSB MKC87LA028: Grumman-Schweizer G-164B-600, N6898Q, Earle, AR, December 3, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 3, 1986, 10:45 local (16:45 UTC)
- Place: Earle, AR
- Coordinates: 35.269893, -90.460487 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.2699&lon=-90.4605&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): 34328
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC87LA028
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34328/pdf
- Page: https://openairdocs.org/ntsb/MKC87LA028

## 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
  - engine assembly - failure,partial (cause)
  - emergency procedure - initiated, pilot in command
  - remedial action - performed, pilot in command (contributing factor)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - wet (cause)

## Analysis

THE PILOT STATED THAT THE POWERPLANT WAS PERFORMING NORMALLY DURING INITIAL CLIMB WHEN, SUDDENLY, THE ENGINE EXPERIENCED A POWER LOSS AFTER BACKFIRING. IMMEDIATE REMEDIAL ACTION RESULTED IN A PARTIAL POWER OUTPUT BUT NOT ENOUGH TO SUSTAIN FLIGHT. EMERGENCY PROCEDURES WERE IMPLEMENTED AND AN OFF-AIRPORT LANDING WAS ATTEMPTED BUT THE TERRAIN WAS WET AND MUDDY AND THE AIRCRAFT NOSED OVER DURING THE LANDING ROLL.

## Aircraft

- Registration: [N6898Q](https://openairdocs.org/deregistered/N6898Q-2013-10-24), registration cancelled 2013-10-24, S/N 337B, built 1977 (OpenAirDocs)
- Reported make and model: GRUMMAN-SCHWEIZER G-164B-600
- 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: 337B
- Airframe hours: 4251
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Mcneely Flying Service, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 20, 1986
- Departed: M63, EARLE, AR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 10,550 total, 10,207 in this make and model, 10,430 as pilot in command, 210 in the last 90 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 12 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 43 °F
- Altimeter: 30.00 inHg
- Observed at: MEM, 26 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 19861203086749A](https://openairdocs.org/incident/19861203086749A), Dec 3, 1986: Scwzer G164B, Earle, AR, Substantial damage. The agricultural spray aircraft nosed over during a forced landing after engine failure.

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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