# NTSB MKC71DCD16: Grumman G-164, N549Y, Oskaloosa, IA, July 28, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 28, 1970
- Place: Oskaloosa, IA · OSKALOOSA, IA
- Location: 41.2922° N, 92.6409° W: Placed by OpenAirDocs: center of Oskaloosa, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.2922&lon=-92.6409&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 5, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 112473
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC71DCD16
- Page: https://openairdocs.org/ntsb/MKC71DCD16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1153  70/7/28  NR.OSKALOOSA,IOWA     GRUMMAN G-164       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 39, 611
        TIME - 1900                    N549Y               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 197 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         OSKALOOSA,IOWA              OSKALOOSA,IOWA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           PILOT IN COMMAND - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - BEANS                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          GLOVES - USED                                            GOGGLES - NOT USED
          CRASH HELMET - AVAILABLE USED                            COCKPIT CRASHPAD - INSTALLED
          CRASH BAR - INSTALLED                                    TANK/HOPPER-LOCATION - FORWARD OF PILOT
          TERRAIN-TYPE -ROLLING                                    ELEVATION-AREA BEING TREATED-FEET -  760
          SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- LANDED DOWNHILL ON HAY FIELD.APPLIED BRAKES TOO HARD.
```

## Aircraft

- Registration: [N549Y](https://openairdocs.org/deregistered/N549Y-2015-05-19), registration cancelled 2015-05-19, S/N 354, built 1965 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Registry engine: [Jacobs R755B series](https://openairdocs.org/engine/jacobs-r755b-series) (registry code 35007, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N549Y (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 MKC72DCD21](https://openairdocs.org/ntsb/MKC72DCD21), Aug 13, 1971: Grumman G-164 (N549Y), Albia, IA, substantial damage
- [NTSB MKC69D0089](https://openairdocs.org/ntsb/MKC69D0089), Jul 29, 1968: Grumman G-164 (N549Y), New Sharon, IA, 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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