# NTSB DEN93LA051: Grumman G-164A, N31182, Truman, AR, April 28, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 28, 1993, 17:55 local (22:55 UTC)
- Place: Truman, AR
- Coordinates: 35.669746, -90.510108 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.6697&lon=-90.5101&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18284
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN93LA051
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18284/pdf
- Page: https://openairdocs.org/ntsb/DEN93LA051

## Probable cause

A POWER LOSS FOR UNDETERMINED REASONS.  A FACTOR WAS:  THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, maneuvering - aerial application
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- In flight collision with object, descent
  - object - tree(s)
  - terrain condition - none suitable (contributing factor)

## Analysis

THE PILOT WAS FLUSHING THE HOPPER WITH WATER.  HE MADE A PASS OVER A FIELD WITH THE SPRAY BOOM OFF.  AS HE PULLED UP TO CLEAR A WIRE, HE SWITCHED THE SPRAY BOOM ON.  HE INITIATED A DESCENT INTO AN ADJOINING FIELD AND AS HE STARTED THE ROUNDOUT, THE AIRPLANE CONTINUED DESCENDING.  HE ADDED FULL POWER BUT THE ENGINE DID NOT RESPOND.  THE AIRPLANE TOUCHED DOWN ON THE GROUND, THEN LIFTED OFF.  THE PILOT HAD INSUFFICIENT ALTITUDE TO CLEAR A KNOLL AT THE END OF THE FIELD, SO HE PULLED THE NOSE UP AND THE AIRPLANE COLLIDED WITH TREES.  THREE GROUND WITNESSES REPORTED HEARING A BANG, AN EXPLOSION, OR BACKFIRE.  THEN ENGINE WAS LATER FUNCTIONALLY TESTED AND IT OPERATED SATISFACTORILY.

## Aircraft

- Registration: [N31182](https://openairdocs.org/deregistered/N31182-2006-04-19), registration cancelled 2006-04-19, S/N 1609, built 1975 (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 R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1609
- Airframe hours: 7106
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Operator: Worthington Flying Service
- Registered owner: Worthington Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, January 8, 1993, 5 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 10,000 total, 5,000 in this make and model, 9,550 as pilot in command, 15 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 75 °F, dew point 52 °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 19930428011049A](https://openairdocs.org/incident/19930428011049A), Apr 28, 1993: Scwzer G164A, Truman, AR, Substantial damage. On pull up during water spray run to flush spray tank struck trees. Reported powerloss but engine ran after accident

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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