# NTSB UNK64X2143: Grunnan G164, N716Y, Alpaugh, CA, June 6, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 6, 1964
- Place: Alpaugh, CA · ALPAUGH, CA
- Location: 35.8890° N, 119.4858° W: Placed by OpenAirDocs: center of Alpaugh, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.8890&lon=-119.4858&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 29, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183276
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2143
- Page: https://openairdocs.org/ntsb/UNK64X2143

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1564   64/6/6    ALPAUGH CALIF       GRUNNAN G164        CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 32, 120
        TIME - 1120                    N716Y               PX-  0  0  0  BUSINESS                  TOTAL HOURS, 43 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           TERRAIN - WET,SOFT GROUND
```

## Aircraft

- Registration: [N716Y](https://openairdocs.org/deregistered/N716Y-2023-04-25), registration cancelled 2023-04-25, S/N 278, built 1964 (OpenAirDocs)
- Reported make and model: GRUNNAN G164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (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

## Other investigations on N716Y (4)

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 WPR11CA198](https://openairdocs.org/ntsb/WPR11CA198), May 4, 2011: Grumman G-164 (N716Y), Princeton, CA, substantial damage. Probable cause: The pilot’s failure to maintain adequate airspeed while maneuvering, resulting in an aerodynamic stall and collision with terrain.
- [NTSB OAK71FVG65](https://openairdocs.org/ntsb/OAK71FVG65), Apr 15, 1971: Grumman G-164 (N716Y), Biggs, CA, substantial damage
- [NTSB OAK66D0225](https://openairdocs.org/ntsb/OAK66D0225), Apr 5, 1966: Grumman G-164 (N716Y), Chico, CA, destroyed
- [NTSB UNK64X3213](https://openairdocs.org/ntsb/UNK64X3213), Aug 4, 1964: Grumman G164 (N716Y), Alpaugh, CA, destroyed

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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