# NTSB DEN71AD026: Lockheed TV-2, N156, Cheyenne, WY, December 4, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: December 4, 1970
- 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: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report March 2, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159344
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN71AD026
- Page: https://openairdocs.org/ntsb/DEN71AD026

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2173   70/12/4   CHEYENNE,WYO        LOCKHEED TV-2       CR-  0  1  1  MISCELLANEOUS             AIRLINE TRANSPORT, AGE
        TIME - 0829                    N156                PX-  0  0  0  TEST                      42, 4127 TOTAL HOURS, 880
                                       DAMAGE-DESTROYED    OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CHEYENNE MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          OKLAHOMA CITY,OKLA          CHEYENNE,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           UNDERSHOOT                                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - TURBINE ASSEMBLY: RETENTION,BLADE
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
           MISCELLANEOUS ACTS,CONDITIONS - PREVIOUS DAMAGE
           PILOT IN COMMAND - IMPROPER COMPENSATION FOR WIND CONDITIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- T.O.2J-J33-125-4 NOT COMPLIED WITH AFTR PREV HOT START. LOW KEY 9500FT. WIND GUSTING 41K.
```

## Aircraft

- Registration: N156 (not matched to a registry record)
- Reported make and model: LOCKHEED TV-2
- Category: Airplane
- Engines: turbo jet
- Damage: Destroyed
- Airport: Cheyenne Muni

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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