# NTSB LAX78DUJ28: Grumman G-164B, N6612Q, Coolidge, AZ, February 12, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 12, 1978
- Place: Coolidge, AZ · 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 April 3, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 143780
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX78DUJ28
- Page: https://openairdocs.org/ntsb/LAX78DUJ28

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0207  78/2/12  NR.COOLIDGE,AZ        GRUMMAN G-164B      CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 51, 11333
        TIME - 1530                    N6612Q              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 550 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         COOLIDGE,AZ                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 8500                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  1450                SWATH RUN-HOW FLOWN - CROSSWIND
          PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
```

## Aircraft

- Registration: [N6612Q](https://openairdocs.org/aircraft/N6612Q), registered now, S/N 163B (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)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19780212001839A](https://openairdocs.org/incident/19780212001839A), Feb 12, 1978: Gulstm G164A, Coolidge, AZ, Substantial damage

## Other investigations on N6612Q (2)

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 WPR24LA151](https://openairdocs.org/ntsb/WPR24LA151), May 12, 2024: Grumman G164 (N6612Q), Maxwell, CA, destroyed. Probable cause: The pilot’s failure to ascertain a proper touchdown point and late decision to initiate a go-around, which resulted in a subsequent collision with vegetation.
- [NTSB SEA94LA072](https://openairdocs.org/ntsb/SEA94LA072), Mar 2, 1994: Grumman G-164 (N6612Q), Walla Walla, WA, substantial damage. Probable cause: UNSUITABLE TERRAIN FOR A FORCED LANDING AFTER A LOSS OF POWER DUE TO A FAILED ENGINE CYLINDER. FACTORS INCLUDE A PARTIAL MAGNETO 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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