# NTSB DEN81DTK21: Grumman G-164C, N6674K, Platte, SD, August 14, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 14, 1981
- Place: Platte, SD · PLATTE, SD
- Location: 43.3869° N, 98.8435° W: Placed by OpenAirDocs: center of Platte, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.3869&lon=-98.8435&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 2, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 124146
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN81DTK21
- Page: https://openairdocs.org/ntsb/DEN81DTK21

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3250  81/8/14    PLATTE,SD           GRUMMAN G-164C      CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1415                    N6674K              PX-  0  0  0  AERIAL APPLICATION        AGE 34, 3526 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            198 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PLATTE,SD                   PLATTE,SD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: STARTING SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 3723                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  1625                SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- SPRAYING MILO.
```

## Aircraft

- Registration: [N6674K](https://openairdocs.org/aircraft/N6674K), registered now, S/N 16C, built 1978 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164C
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164C](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164c) (registry code 3952803) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19810814052899A](https://openairdocs.org/incident/19810814052899A), Aug 14, 1981: Grumav G164C, Platte, SD, Substantial damage. Slow airspeed on spray run entry. Mushed into ground. Failed to dump load or use power recovery.

## Other investigations on N6674K (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 WPR18LA128](https://openairdocs.org/ntsb/WPR18LA128), Apr 29, 2018: Grumman Acft ENG Cor-Schweizer G 164C (N6674K), Maxwell, CA, substantial damage. Probable cause: A total loss of engine power due to an uncommanded closing of the fuel shutoff valve, which terminated fuel to the engine. The reason for the fuel shutoff valve’s closure could not be determined…
- [NTSB GAA17CA305](https://openairdocs.org/ntsb/GAA17CA305), May 26, 2017: Grumman Acft ENG Cor-Schweizer G-164 (N6674K), Maxwell, CA, substantial damage. Probable cause: The pilot's failure to visually check the fuel quantity during the preflight inspection and ensure that sufficient fuel was onboard for the flight, which resulted in a total loss of engine power due…
- [NTSB DEN85LA177](https://openairdocs.org/ntsb/DEN85LA177), Jul 1, 1985: Grumman G-164 (N6674K), Platte, SD, substantial damage

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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