# NTSB OAK74DVM52: Bede BD-4, N1131N, Three Rocks, CA, April 7, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 7, 1974
- Place: Three Rocks, CA · THREE ROCKS, CA
- Location: 36.5051° N, 120.3935° W: Placed by OpenAirDocs: center of Three Rocks, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5051&lon=-120.3935&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report May 1, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186565
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74DVM52
- Page: https://openairdocs.org/ntsb/OAK74DVM52

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0487   74/4/7  NR.THREE ROCKS,CALIF  BEDE BD-4           CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 31, 435
        TIME - 1145                    N1131N              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 163 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - GIFFEN RANCH
        DEPARTURE POINT             INTENDED DESTINATION
          STOCKTON,CALIF              SAN LUIS OBISP,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - COOLING SYSTEM: COWLING
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: POOR/INADEQUATE DESIGN
           POWERPLANT - FUEL SYSTEM: VENTS,DRAINS,TANK CAPS
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FLUTTERING COWL OPENED GASCOLATOR PETCOCK.FUEL DRAINED OVERBOARD.PLT UNDERSHOT FORCED LDG.
```

## Aircraft

- Registration: [N1131N](https://openairdocs.org/deregistered/N1131N-2012-06-04), registration cancelled 2012-06-04, S/N 171, built 1972 (OpenAirDocs)
- Reported make and model: BEDE BD-4
- Registry model: [Newton BEDE BD-4](https://openairdocs.org/model/newton-bede-bd-4) (registry code 05612AG) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Giffen Ranch

## 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 19740407007099A](https://openairdocs.org/incident/19740407007099A), Apr 7, 1974: Amtr 05612AG, Three Rocks, CA, Substantial damage. Fluttering cowl opened gascolator petcock. Fuel drained overboard. Plt undershot forced ldg.

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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