# NTSB OAK68A0040: Filper B 400, N5005F, Livermore, CA, November 7, 1967

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: November 7, 1967
- Place: Livermore, CA · LIVERMORE, CA
- Location: 37.6870° N, 121.7598° W: Placed by OpenAirDocs: center of Livermore, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.6870&lon=-121.7598&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report June 21, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 113653
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK68A0040
- Page: https://openairdocs.org/ntsb/OAK68A0040

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-1140   67/11/7   LIVERMORE,CALIF     FILPER B 400        CR-  1  0  0  MISCELLANEOUS             COMMERCIAL, AGE 45, 10000
        TIME - 1600                    N5005F              PX-  0  0  0  TEST                      TOTAL HOURS, 58 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - LIVERMORE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
          ROTORCFT-HIGH BLADE FLAPPING AND INPLANE LOADS.
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- BOTH ROTOR SYSTEMS FAILED DURING HI SPEED FLIGHT
```

## Aircraft

- Registration: N5005F (not matched to a registry record)
- Reported make and model: FILPER B 400
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Livermore

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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