# NTSB UNK65X1447: Piper PA23, N4523P, San Antonio, TX, February 21, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 21, 1965
- Place: San Antonio, TX · SAN ANTONIO, TX
- Location: 29.4241° N, 98.4936° W: Placed by OpenAirDocs: center of San Antonio, TX, within about 13 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.4241&lon=-98.4936&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report March 25, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 179366
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK65X1447
- Page: https://openairdocs.org/ntsb/UNK65X1447

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0303  65/2/21    SAN ANTONIO TEX     PIPER PA23          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 49, 4300
        TIME - 0745                    N4523P              PX-  0  0  3  BUSINESS                  TOTAL HOURS, 400 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SAN ANTONIO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: AIRPORT HAZARD                            TAXI: TO TAKEOFF
           GEAR COLLAPSED                                           TAXI: TO TAKEOFF
        PROBABLE CAUSE(S)
           PERSONNEL - AIRPORT SUPERVISORY PERSONNEL: FAILURE TO NOTIFY OF UNSAFE COND/AND OR FAILURE TO MARK OBSTRUCTION
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- NOSE WHEEL STRUCK UNMARKED CONCRETE CURB.
```

## Aircraft

- Registration: [N4523P](https://openairdocs.org/deregistered/N4523P-2012-07-19), registration cancelled 2012-07-19, S/N 27-27, built 1960 (OpenAirDocs)
- Reported make and model: PIPER PA23
- 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: San Antonio

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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