# NTSB OAK75FVD43: Cessna 172G, N3995L, Sonoma, CA, April 17, 1975

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 17, 1975
- 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: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 21, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148597
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK75FVD43
- Page: https://openairdocs.org/ntsb/OAK75FVD43

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0831  75/4/17    SONOMA,CA           CESSNA 172G         CR-  0  0  1  NONCOMMERCIAL             STUDENT, AGE 39, 40 TOTAL
        TIME - 1820                    N3995L              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  HOURS, 4 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            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: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - GUST LOCKS ENGAGED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- EXTERNAL GUST LOCK RESTRICTED ELEV TRAVEL TO ABT 2 IN.
```

## Aircraft

- Registration: [N3995L](https://openairdocs.org/aircraft/N3995L), registered now, S/N 17254164, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 172G
- Registry model: [Cessna 172G](https://openairdocs.org/model/cessna-172g) (registry code 2072420) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, 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 19750417008809A](https://openairdocs.org/incident/19750417008809A), Apr 17, 1975: Cessna 172G, Sonoma, CA, Substantial damage. External gust lock restricted elev travel to abt 2 in.

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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