# NTSB OAK73FVG04: Sikorsky S-55B, N1062, Benicia, CA, July 18, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 18, 1972
- Place: Benicia, CA · BENICIA, CA
- Location: 38.0727° N, 122.1552° W: Placed by OpenAirDocs: center of Benicia, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.0727&lon=-122.1552&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 2, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 167502
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73FVG04
- Page: https://openairdocs.org/ntsb/OAK73FVG04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2519  72/7/18    BENICIA,CALIF       SIKORSKY S-55B      CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0908                    N1062               PX-  0  0  0  AIR TAXI-CARGO            32, 8868 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            1646 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          PACK AREA SUISUN BAY        LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
           MISCELLANEOUS ACTS,CONDITIONS - JETTISONED LOAD
        REMARKS- FRONT TRANSMISSION SUPPORT BRACKET FAILED UNDER LOAD. OVER SIZE ENG INSTALLED.
```

## Aircraft

- Registration: N1062 (not matched to a registry record)
- Reported make and model: SIKORSKY S-55B
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed

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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