# NTSB LAX80DVA01: Piper PA-23, N55WD, Fresno, CA, October 2, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 2, 1979
- 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 8, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 133428
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX80DVA01
- Page: https://openairdocs.org/ntsb/LAX80DVA01

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2439   79/10/2   FRESNO,CA           PIPER PA-23         CR-  0  0  2  INSTRUCTIONAL             AIRLINE TRANSPORT, AGE
        TIME - 0945                    N55WD               PX-  0  0  0  DUAL                      26, 2104 TOTAL HOURS, 26
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - FRESNO AIR TERM
        DEPARTURE POINT             INTENDED DESTINATION
          FRESNO,CA                   LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: ROLL
        PROBABLE CAUSE(S)
           SYSTEMS - HYDRAULIC SYSTEM: HYDRAULIC PUMPS
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - HYDRAULIC FAILURE
           AIRFRAME - LANDING GEAR: EMERGENCY/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- FAILURE OF EMERG HAND PUMP O-RING CAUSED LOSS OF HYD FLUID.SUBSEQUENTLY,CO2 GEAR EXT CABLE FAILED.
```

## Aircraft

- Registration: [N55WD](https://openairdocs.org/deregistered/N55WD-2017-04-04), registration cancelled 2017-04-04, S/N 27-449, built 1961 (OpenAirDocs)
- Reported make and model: PIPER PA-23
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (registry code 7102308) (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: Fresno Air Term

## 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 19791002028279A](https://openairdocs.org/incident/19791002028279A), Oct 2, 1979: Piper PA23250, Fresno, CA, Substantial damage. O ring seal broke on emergency gear pump. Mains down but unable to get nose gear to lock. Landed nose gear up.

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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