# NTSB UNK64X3405: Bell 47G, N179B, Alameda, CA, August 15, 1964

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 15, 1964
- Place: Alameda, CA · ALAMEDA, CA
- Location: 37.7423° N, 122.2605° W: Placed by OpenAirDocs: center of Alameda, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7423&lon=-122.2605&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report January 15, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 182697
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X3405
- Page: https://openairdocs.org/ntsb/UNK64X3405

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0722  64/8/15  NR.ALAMEDA CALIF      BELL 47G            CR-  1  0  0  NONCOMMERCIAL             STUDENT, AGE 30, 35 TOTAL
        TIME - 0920                    N179B               PX-  0  0  0  PRACTICE                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - OAKLAND
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
         FIRE AFTER IMPACT
        REMARKS- BOLT ATTACHING INBOARD CYCLIC BARS TO LATERAL CYCLIC DISK CAME OUT
```

## Aircraft

- Registration: [N179B](https://openairdocs.org/deregistered/N179B-2014-09-10), registration cancelled 2014-09-10, S/N 33, built 1948 (OpenAirDocs)
- Reported make and model: BELL 47G
- Registry model: [Bell 47G](https://openairdocs.org/model/bell-47g) (registry code 1181002) (OpenAirDocs)
- Registry engine: [Franklin 6A4200 series](https://openairdocs.org/engine/franklin-6a4200-series) (registry code 27027, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Oakland

## Other investigations on N179B (2)

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.

- [NTSB OAK76DVD44](https://openairdocs.org/ntsb/OAK76DVD44-154315), Jul 19, 1976: Bell 47G (N179B), Pittsburg, CA, destroyed
- [NTSB OAK76DVG16](https://openairdocs.org/ntsb/OAK76DVG16), Aug 25, 1975: Bell 47G (N179B), Gold Run, CA, substantial damage

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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