# NTSB LAX83LA009: Grumman G-164B, N6628Q, Coolidge, AZ, October 26, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 26, 1982, 14:15 local (21:15 UTC)
- Place: Coolidge, AZ
- Location: 32.9778° N, 111.5176° W: Placed by OpenAirDocs: center of Coolidge, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.9778&lon=-111.5176&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 26, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70335
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA009
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70335/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA009

## Sequence of events

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

- In flight encounter with weather, maneuvering - aerial application
  - weather condition - gusts (contributing factor)
  - weather condition - unfavorable wind (contributing factor)
  - planning/decision - improper, pilot in command (cause)
- Loss of control - in flight, maneuvering - aerial application
  - stall - uncontrolled, pilot in command
- In flight collision with terrain/water, descent - uncontrolled
  - load jettison - performed, pilot in command

## Analysis

THE PILOT STATED THAT HE FLEW INTO A DUST DEVIL WHILE IN A DOWNWIND, PROCEDURE TURN AND THE AIRCRAFT STALLED. REPORTEDLY, HE DUMPED HIS LOAD AND APPLIED FULL POWER, BUT HE WAS ABLE TO RECOVER BEFORE THE PLANE HIT THE GROUND, LEFT WING FIRST. THE PILOT REPORTED THE WIND WAS GUSTING TO 10 KNOTS.

## Aircraft

- Registration: [N6628Q](https://openairdocs.org/aircraft/N6628Q), registered now, S/N 154B, built 1976 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- 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: 154B
- Airframe hours: 2072
- Engines: P & W R-985-AN14B 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Sarita Aerial Contractors Inc.
- Registered owner: Sarita Aerial Contractors Inc.
- Departed: SARITA, AZ
- Destination: SARITA, AZ

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 1,912 total, 847 in this make and model, 15 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 7 knots
- Visibility: 60 statute miles
- Temperature: 194 °F

## 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 19821026064479A](https://openairdocs.org/incident/19821026064479A), Oct 26, 1982: Scwzer G164B, Coolidge, AZ, Substantial damage. Ag aircraft stalled and crashed after hitting a dust devil on a downwind turn around.

## Other investigations on N6628Q (3)

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 WPR11LA384](https://openairdocs.org/ntsb/WPR11LA384), Aug 15, 2011: Grumman Acft ENG Cor-Schweizer G-164B (N6628Q), Oakesdale, WA, substantial damage. Probable cause: The pilot's decision to land with a high tailwind, which resulted in a nose-over.
- [NTSB WPR09LA227](https://openairdocs.org/ntsb/WPR09LA227), May 4, 2009: Grumman G-164B (N6628Q), Colfax, WA, substantial damage. Probable cause: A total loss of engine power due to excessive wear in several carburetor components that led to a malfunction of the carburetor.
- [NTSB LAX91LA299](https://openairdocs.org/ntsb/LAX91LA299), Jul 9, 1991: Grumman G-164B (N6628Q), Crows Landing, CA, destroyed. Probable cause: THE PILOT LANDING HIS AIRPLANE ERRONEOUSLY ON THE WRONG LANDING SURFACE. FACTORS IN THIS ACCIDENT WERE: SUNGLARE AND ITS INTERFERENCE WITH THE PILOT'S VISION AND THE SOFT TERRAIN.

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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