# NTSB OAK70DVM06: Piper J3C-65, N40855, Half Mn Bay, CA, March 7, 1970

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 7, 1970
- Place: Half Mn Bay, CA · HALF MN BAY, CA
- Location: 37.4673° N, 122.4399° W: Placed by OpenAirDocs: center of Half Moon Bay, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.4673&lon=-122.4399&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 27, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 140989
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK70DVM06
- Page: https://openairdocs.org/ntsb/OAK70DVM06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0553   70/3/7    HALF MN BAY,CALIF   PIPER J3C-65        CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 47, 620
        TIME - 1300                    N40855              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HALF MOON BAY
        DEPARTURE POINT             INTENDED DESTINATION
          HALF MN BAY,CALIF           HALF MN BAY,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
```

## Aircraft

- Registration: N40855 (not matched to a registry record)
- Reported make and model: PIPER J3C-65
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Half Moon Bay

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.