# NTSB OAK66F0267: Raven S-50, N11997, Livermore, CA, April 7, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: April 7, 1966
- 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: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report July 1, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 172949
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK66F0267
- Page: https://openairdocs.org/ntsb/OAK66F0267

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0094   66/4/7    LIVERMORE CALIF     RAVEN S-50          CR-  0  1  0  MISCELLANEOUS             COMMERCIAL, AGE 40, 3800
        TIME - 1030                    N11997              PX-  0  0  0  OTHER                     TOTAL HOURS, 50 IN TYPE,
                                       DAMAGE-MINOR        OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - MUNICIPAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              TAKEOFF: INITIAL CLIMB
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
          MISC-BALLOON BAG TORE FROM ACCENT AIR EXPASIN
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: GROUND CREWMAN
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- PILOT-GRND CREW MISUNDERSTND-PREMATURE RELEASE.
```

## Aircraft

- Registration: N11997 (not matched to a registry record)
- Reported make and model: RAVEN S-50
- Category: Balloon
- Engines: none
- Damage: Minor damage
- Airport: Municipal

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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