# NTSB SEA69D0210: Piper PA-23, N5121Y, Great Falls, MT, February 14, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 14, 1969
- Place: Great Falls, MT · GREAT FALLS, MT
- Location: 47.5025° N, 111.3000° W: Placed by OpenAirDocs: center of Great Falls, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.5025&lon=-111.3000&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 12, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 114427
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA69D0210
- Page: https://openairdocs.org/ntsb/SEA69D0210

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0883  69/2/14    GREAT FALLS,MONT    PIPER PA-23         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 2130                    N5121Y              PX-  0  0  1  DEMONSTRATION             AGE 22, 1580 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            17 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - GREAT FALLS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR RETRACTED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
        REMARKS- DOWN LOCKS WOULD ONLY PARTIALLY ENGAGE WHEN GR WAS EXTENDED.
```

## Aircraft

- Registration: [N5121Y](https://openairdocs.org/deregistered/N5121Y-1981-10-15), registration cancelled 1981-10-15, S/N 272153 (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)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Great Falls

## Other investigations on N5121Y (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 UNK64X0602](https://openairdocs.org/ntsb/UNK64X0602), Feb 18, 1964: Piper PA23 (N5121Y), Reading, PA, destroyed

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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