# NTSB OAK78DVD51: Cessna 170, N9985A, Sonoma, CA, August 2, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 2, 1978
- Place: Sonoma, CA · SONOMA, CA
- Location: 38.2903° N, 122.4598° W: Placed by OpenAirDocs: center of Sonoma, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2903&lon=-122.4598&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 11, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 140092
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK78DVD51
- Page: https://openairdocs.org/ntsb/OAK78DVD51

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2426   78/8/2    SONOMA,CA           CESSNA 170          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 33, 495
        TIME - 1430                    N9985A              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 375 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SONOMA VALLEY
        DEPARTURE POINT             INTENDED DESTINATION
          SONOMA,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
```

## Aircraft

- Registration: [N9985A](https://openairdocs.org/deregistered/N9985A-2013-03-25), registration cancelled 2013-03-25, S/N 19345, built 1950 (OpenAirDocs)
- Reported make and model: CESSNA 170
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sonoma Valley

## 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 19780802027369A](https://openairdocs.org/incident/19780802027369A), Aug 2, 1978: Cessna 170A, Sonoma, 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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