# NTSB OAK67D0113: Piper PA-23, N4631P, Fresno, CA, September 20, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 20, 1966
- Place: Fresno, CA · FRESNO, CA
- Location: 36.7477° N, 119.7724° W: Placed by OpenAirDocs: center of Fresno, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.7477&lon=-119.7724&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 7, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 121144
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK67D0113
- Page: https://openairdocs.org/ntsb/OAK67D0113

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2556  66/9/20    FRESNO CALIF        PIPER PA-23         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 55, 2741
        TIME - 1145                    N4631P              PX-  0  0  1  BUSINESS                  TOTAL HOURS, 265 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SIERRA SKY PARK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO EXTEND LANDING GEAR
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - CHECKLIST-FAILED TO USE
           AIRFRAME - LANDING GEAR: LANDING GEAR WARNING AND INDICATING COMPONENTS
        REMARKS- GEAR WARNING HORN SWITCH SET ON LOW SIDE OF THROTTLE MOVEMENT.
```

## Aircraft

- Registration: [N4631P](https://openairdocs.org/aircraft/N4631P), registered now, S/N 27-149 (OpenAirDocs)
- Reported make and model: PIPER PA-23
- Registry model: [Piper PA-23](https://openairdocs.org/model/piper-pa-23) (registry code 7102302) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sierra Sky Park

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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