# NTSB OAK74FVD08: Cessna TU206B, N4991F, Livermore, CA, September 3, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 3, 1973
- 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: No injuries
- Injuries: 7 uninjured
- Status: Completed, report October 25, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 188660
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74FVD08
- Page: https://openairdocs.org/ntsb/OAK74FVD08

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2630   73/9/3    LIVERMORE,CALIF     CESSNA TU206B       CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 56, 1978
        TIME - 1140                    N4991F              PX-  0  0  6  PARAJUMP-SPORT            TOTAL HOURS, 1614 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - PRIVATE STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          LIVERMORE,CALIF             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - PREMATURE LIFT-OFF
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - FAILED TO ABORT TAKEOFF
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G.
        REMARKS- 100LBS OVR MAX GWT,1.58IN AFT REAR C.G. LIMIT.
```

## Aircraft

- Registration: [N4991F](https://openairdocs.org/aircraft/N4991F), registered now, S/N U206-0691, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA TU206B
- Registry model: [Cessna TU206B](https://openairdocs.org/model/cessna-tu206b) (registry code 2073324) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Private Strip

## 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 19730903029389A](https://openairdocs.org/incident/19730903029389A), Sep 3, 1973: Cessna TU206B, Livermore, CA, Substantial damage. 100LBS ovr max gwt,1.58IN aft rear c.g. limit.

## Other investigations on N4991F (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 ANC05LA133](https://openairdocs.org/ntsb/ANC05LA133), Sep 2, 2005: Cessna 206 (N4991F), Yakutat, AK, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for takeoff, and his failure to maintain adequate airspeed during takeoff initial climb from a remote airstrip, which resulted in the airplane descending…
- [NTSB LAX82DA288](https://openairdocs.org/ntsb/LAX82DA288), Aug 3, 1982: Cessna U206B (N4991F), Grass Valley, 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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