# NTSB DEN66F0157: Piper PA-23, N5448Y, Cheyenne, WY, October 25, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 25, 1965
- Place: Cheyenne, WY · CHEYENNE, WY
- Location: 41.1400° N, 104.8202° W: Placed by OpenAirDocs: center of Cheyenne, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.1400&lon=-104.8202&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report December 13, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 175140
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN66F0157
- Page: https://openairdocs.org/ntsb/DEN66F0157

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3210  65/10/25   CHEYENNE WYO        PIPER PA-23         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 44, 8000
        TIME - 1720                    N5448Y              PX-  0  0  3  BUSINESS                  TOTAL HOURS, 150 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CHEYENNE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           SYSTEMS - HYDRAULIC SYSTEM: SEALS
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - LOW FLUID LEVEL
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        REMARKS- HYDRAULIC FLUID LEAK AT O RING SEAL.
```

## Aircraft

- Registration: [N5448Y](https://openairdocs.org/deregistered/N5448Y-1977-07-07), registration cancelled 1977-07-07, S/N 272529 (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: Cheyenne

## Other investigations on N5448Y (2)

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 DEN76AD053](https://openairdocs.org/ntsb/DEN76AD053), Jun 11, 1976: Piper PA-23 (N5448Y), Cheyenne, WY, destroyed, 1 fatal
- [NTSB DEN66F0082](https://openairdocs.org/ntsb/DEN66F0082), Jul 28, 1965: Piper PA-23 (N5448Y), Las Animas, CO, substantial damage

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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