# NTSB OAK73DXQ03: Bolkow C, N11RB, Lee Vining, CA, July 18, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 18, 1972
- Place: Lee Vining, CA · LEE VINING, CA
- Location: 37.9564° N, 119.1223° W: Placed by OpenAirDocs: center of Lee Vining, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9564&lon=-119.1223&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 28, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 168155
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73DXQ03
- Page: https://openairdocs.org/ntsb/OAK73DXQ03

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2599  72/7/18    LEE VINING,CALIF    BOLKOW C            CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 53, 4610
        TIME - 1500                    N11RB               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 238 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - LEE VINING
        DEPARTURE POINT             INTENDED DESTINATION
          MINDER NEV                  MINDER NEV
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: DIRT BANK                                 LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
           WEATHER - UNFAVORABLE WIND CONDITIONS
           WEATHER - DOWNDRAFT,UPDRAFTS
        WEATHER BRIEFING - OTHER
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  ADVERSE/UNFAVORABLE WEATHER
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      85
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          280                                                       25
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- HIGH HEAD WIND AND DOWNDRAFTS.
```

## Aircraft

- Registration: N11RB (not matched to a registry record)
- Reported make and model: BOLKOW C
- Category: Glider
- Engines: none
- Damage: Substantial damage
- Airport: Lee Vining

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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