# NTSB LAX67A0070: Bensen B-8M, N9677Z, Chino, CA, January 28, 1967

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: January 28, 1967
- Place: Chino, CA · CHINO, CA
- Location: 33.9763° N, 117.6745° W: Placed by OpenAirDocs: center of Chino, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.9763&lon=-117.6745&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report June 13, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 119061
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX67A0070
- Page: https://openairdocs.org/ntsb/LAX67A0070

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0030  67/1/28    CHINO CALIF         BENSEN B-8M         CR-  1  0  0  NONCOMMERCIAL             STUDENT, AGE 36, 39 TOTAL
        TIME - 1630                    N9677Z              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - CHINO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: INITIAL CLIMB
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR HEAD ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
          PERSONNEL-ROTOR SPINDLE NOT MADE TO SPECIFICATIONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- BUILDER OF N9677Z NOT DETERMINED.
```

## Aircraft

- Registration: [N9677Z](https://openairdocs.org/deregistered/N9677Z-2018-03-23), registration cancelled 2018-03-23, S/N MZ-1, built 1963 (OpenAirDocs)
- Reported make and model: BENSEN B-8M
- Registry model: [Bensen B-8](https://openairdocs.org/model/bensen-b-8) (registry code 13005ZX) (OpenAirDocs)
- Registry engine: [Mcculloch 4318A&E/0-100](https://openairdocs.org/engine/mcculloch-4318a-e-0-100) (registry code 43101, reciprocating) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed
- Airport: Chino

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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