# NTSB OAK68D0352: Piper PA-23, N4410P, San Carlos, CA, March 18, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 18, 1968
- Place: San Carlos, CA · SAN CARLOS, CA
- Location: 37.4990° N, 122.2676° W: Placed by OpenAirDocs: center of San Carlos, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.4990&lon=-122.2676&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 15, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 111134
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK68D0352
- Page: https://openairdocs.org/ntsb/OAK68D0352

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0779  68/3/18    SAN CARLOS,CALIF    PIPER PA-23         CR-  0  0  2  INSTRUCTIONAL             PRIVATE, AGE 26, 218
        TIME - 1330                    N4410P              PX-  0  0  0  CHECK                     TOTAL HOURS, 118 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SAN CARLOS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR RETRACTED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: GEAR LOCKING MECHANISM
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- RT GEAR DOWNLOCK MALFUNCTIONED.
```

## Aircraft

- Registration: [N4410P](https://openairdocs.org/deregistered/N4410P-1999-04-01), registration cancelled 1999-04-01, S/N 23-1922 (OpenAirDocs)
- Reported make and model: PIPER PA-23
- Registry model: [Piper PA-23-160](https://openairdocs.org/model/piper-pa-23-160) (registry code 7102304) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: San Carlos

## Other investigations on N4410P (1)

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 FTW98FA229](https://openairdocs.org/ntsb/FTW98FA229), May 18, 1998: Piper PA-23-160 (N4410P), Guthrie, OK, destroyed, 2 fatal. Probable cause: The designated pilot examiner's decision to execute a single engine go-around which exceeded the airplane's engine out climb capability in the gear down configuration. Factors were the arcing of an…

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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