# NTSB OAK73DVW17: Beech C35, N686D, Adaven, NV, February 21, 1973

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: February 21, 1973
- Place: Adaven, NV · ADAVEN, NV
- Location: 38.1322° N, 115.6003° W: Placed by OpenAirDocs: center of Adaven, NV, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.1322&lon=-115.6003&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report May 18, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 170260
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73DVW17
- Page: https://openairdocs.org/ntsb/OAK73DVW17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0714  73/2/21  NR.ADAVEN,NEV         BEECH C35           CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 48, UNK/NR
        TIME - 1830                    N686D               PX-  0  0  0  BUSINESS                  TOTAL HOURS, 559 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          LANCASTER,CALIF             LOVELOCK,NEV
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: UNCONTROLLED DESCENT
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           PILOT IN COMMAND - SPATIAL DISORIENTATION
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - ICE-PROPELLER
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - INTENTIONAL WHEELS-UP
        FACTOR(S)
           PILOT IN COMMAND - PHYSICAL IMPAIRMENT
           MISCELLANEOUS ACTS,CONDITIONS - HYPOXIA
           WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        WEATHER BRIEFING - BRIEFING RECEIVED-METHOD UNKNOWN
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        MISSING AIRCRAFT - LATER RECOVERED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      11000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          NONE                                                     VFR
        TYPE OF FLIGHT PLAN
          VFR
        REMARKS- BOTH BLADES,PLTS WINDOW SEPD DRG HI-SPEED SPIN FRM 13,500FT(NO OXYGEN).RCVRD 2/22/73.
```

## Aircraft

- Registration: [N686D](https://openairdocs.org/deregistered/N686D-2012-10-11), registration cancelled 2012-10-11, S/N D-2961, built 1951 (OpenAirDocs)
- Reported make and model: BEECH C35
- Registry model: [Beech C35](https://openairdocs.org/model/beech-c35) (registry code 1151508) (OpenAirDocs)
- Registry engine: [Continental E185 series](https://openairdocs.org/engine/continental-e185-series) (registry code 17014, 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 19730221007039A](https://openairdocs.org/incident/19730221007039A), Feb 21, 1973: Beech F35, Adaven, NV, Substantial damage. Both blades,plts window sepd drg hi-speed spin frm 13,500FT(no oxygen).rcvrd 2/22/73.

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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