# NTSB UNK64X2154: Home Built, N9728Z, Yuca Valley, CA, June 6, 1964

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: June 6, 1964
- Place: Yuca Valley, CA · YUCA VALLEY, CA
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 30, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 183288
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X2154
- Page: https://openairdocs.org/ntsb/UNK64X2154

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1575   64/6/6    YUCA VALLEY CALIF   HOME BUILT          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1430                    N9728Z              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  AGE 33, 1500 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            150 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
```

## Aircraft

- Registration: [N9728Z](https://openairdocs.org/aircraft/N9728Z), registered now, S/N 2, built 1962 (OpenAirDocs)
- Reported make and model: HOME BUILT
- Registry model: [Gravance PRUE STANDARD](https://openairdocs.org/model/gravance-prue-standard) (registry code 05603NM) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider, amateur-built
- Engines: none
- Damage: 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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