# NTSB DEN69A0023: Piper PA-23, N4877P, Cheyenne, WY, November 13, 1968

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: November 13, 1968
- 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: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report May 23, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 192141
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN69A0023
- Page: https://openairdocs.org/ntsb/DEN69A0023

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4723  68/11/13   CHEYENNE,WYO        PIPER PA-23         CR-  1  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 2313                    N4877P              PX-  0  0  0  COMMUTER AIR CARRIER      AGE 37, 3314 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0  AIR TAXI-PASSG S-D        875 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: DESCENDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IFR OPERATION
        FACTOR(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - COMMUNICATIONS AND NAVIGATION EQUIPMENT: OTHER
        MISSING AIRCRAFT - LATER RECOVERED
         FIRE AFTER IMPACT
        REMARKS- MAIL FLT.RECOVERY DATE-11/19/69.STRUCK MT.BELOW MEA. OFF COURSE. PLT INDICATED NAV EQUIP PROBLEM.
```

## Aircraft

- Registration: [N4877P](https://openairdocs.org/deregistered/N4877P-1969-02-14), registration cancelled 1969-02-14, S/N 27-457 (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: 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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