# NTSB DEN74AD033: Convair 580, N73145, Cheyenne, WY, January 13, 1974

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: January 13, 1974
- 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: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 46 uninjured
- Status: Completed, report April 3, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187280
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN74AD033
- Page: https://openairdocs.org/ntsb/DEN74AD033

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0005  74/1/13    CHEYENNE,WYO        CONVAIR 580         CR-  0  1  2  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1925                    N73145              PX-  0  0 44                            44, 13800 TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            6090 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CHEYENNE MUNI
        OPERATOR - FRONTIER AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          COLORADO SPRNGS,COLO        ROCK SPRINGS,WYO             LARAMIE,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           TURBULENCE                                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           WEATHER - TURBULENCE IN FLIGHT,CLEAR AIR
           PERSONNEL - FLIGHT PERSONNEL
           MISCELLANEOUS ACTS,CONDITIONS - SEAT BELT NOT FASTENED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEAT BELT SIGN ON
        WEATHER BRIEFING - BRIEFING RECEIVED-METHOD UNKNOWN
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          NONE                                                     260
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           30                                                      VFR
        TYPE OF FLIGHT PLAN
          VFR
        REMARKS- MODERATE TURBULENCE-FLT ATTENDANT THROWN AGAINST OVERHEAD.GUSTS TO 43KTS.
```

## Aircraft

- Registration: [N73145](https://openairdocs.org/deregistered/N73145-1992-08-12), registration cancelled 1992-08-12, S/N 145 (OpenAirDocs)
- Reported make and model: CONVAIR 580
- Registry model: [Convair 340-31](https://openairdocs.org/model/convair-340-31) (registry code 2422804) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: No damage
- Airport: Cheyenne Muni

## Other investigations on N73145 (1)

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.

- [NTSB DEN68A0017](https://openairdocs.org/ntsb/DEN68A0017), Sep 8, 1967: Convair 580 (N73145), Denver, CO, substantial damage

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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