# NTSB ATL85LA269: Grumman G-164A, N9893, Tunica, MS, September 6, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 6, 1985, 12:30 local (17:30 UTC)
- Place: Tunica, MS
- Coordinates: 34.679233, -90.380241 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.6792&lon=-90.3802&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6870
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL85LA269
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6870/pdf
- Page: https://openairdocs.org/ntsb/ATL85LA269

## Sequence of events

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

- Loss of control - in flight, maneuvering - aerial application
  - in-flight planning/decision - improper, pilot in command (cause)
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - crop

## Analysis

THE PLT STATED THAT DURING AERIAL APPLICATION MANEUVER HE ALLOWED THE AIRSPEED TO GET TOO LOW AND THE ACFT SETTLED INTO A SOY BEAN FIELD. THE LEFT WING CONTACTED THE CROP AND THE ACFT CARTWHEELED.

## Aircraft

- Registration: [N9893](https://openairdocs.org/deregistered/N9893-2013-05-30), registration cancelled 2013-05-30, S/N 1326, built 1974 (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: 1326
- Airframe hours: 3682
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Eugene Bobo, doing business as Bobo Air Service
- Registered owner: Eugene Bobo
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 15, 1985

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 802 total, 250 in this make and model, 500 as pilot in command, 200 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point 75 °F
- Altimeter: 30.00 inHg
- Observed at: MEM

## 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 19850906047779A](https://openairdocs.org/incident/19850906047779A), Sep 6, 1985: Scwzer G164A, Tunica, MS, Substantial damage. During turn after spraying run, pilot allowed airspeed to drop, causing a stall into the field.

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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