# NTSB DEN7LFTC06: Navion A, N91449, Cheyenne, WY, July 31, 1975

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: July 31, 1975
- 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: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 3 serious, 1 uninjured
- Status: Completed, report August 19, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149373
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN7LFTC06
- Page: https://openairdocs.org/ntsb/DEN7LFTC06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1940  75/7/31    CHEYENNE,WY         NAVION A            CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 50, 490
        TIME - 0626                    N91449              PX-  0  3  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 108 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - CHEYENNE MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          CHEYENNE,WY                 RENO,NV
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC.
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
           WEATHER - HIGH DENSITY ALTITUDE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     TAIL WIND 158-202 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           61                                                       80
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           3                                                       VFR
        TYPE OF FLIGHT PLAN
          VFR
        REMARKS- DISREGARDED OPERATORS MANUAL AND USED FLAPS FOR TAKEOFF.NEAR MAX GROSS WT.DA8000FT
```

## Aircraft

- Registration: [N91449](https://openairdocs.org/deregistered/N91449-1976-05-27), registration cancelled 1976-05-27, S/N NAV-4-270 (OpenAirDocs)
- Reported make and model: NAVION A
- Registry model: [North American NAVION A](https://openairdocs.org/model/north-american-navion-a) (registry code 6150132) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Cheyenne Muni

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750731020939A](https://openairdocs.org/incident/19750731020939A), Jul 31, 1975: Navion NAVIONA, Cheyenne, WY, Substantial damage. Disregarded operators manual and used flaps for takeoff. Near max gross wt.DA8000FT

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.