# NTSB OAK78FVM06: Bell 206B, N90226, San Jose, CA, December 15, 1977

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: December 15, 1977
- Place: San Jose, CA · SAN JOSE, CA
- Location: 37.3394° N, 121.8950° W: Placed by OpenAirDocs: center of San Jose, CA, within about 8 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.3394&lon=-121.8950&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report March 29, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 143977
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78FVM06
- Page: https://openairdocs.org/ntsb/OAK78FVM06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4143  77/12/15   SAN JOSE,CA         BELL 206B           CR-  0  0  2  INSTRUCTIONAL             ATP,FLIGHT INSTR., AGE
        TIME - 1610                    N90226              PX-  0  0  1  DUAL                      27, 3725 TOTAL HOURS, 170
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SAN JOSE MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          SAN JOSE,CA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                TAKEOFF: VERTICAL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
        REMARKS- LEFT HAND TRANSMISSION SPINDLE SECURING NUT AND WASHER MISSING,NO COTTER PIN FOUND.
```

## Aircraft

- Registration: [N90226](https://openairdocs.org/deregistered/N90226-1978-05-24), registration cancelled 1978-05-24, S/N 1893 (OpenAirDocs)
- Reported make and model: BELL 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: San Jose Muni

## 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 19771215039149A](https://openairdocs.org/incident/19771215039149A), Dec 15, 1977: Bell 206B, San Jose, CA, Substantial damage. Left hand transmission spindle securing nut and washer missing,no cotter pin found.

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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