NTSB Identification: DEN83FA123.
The docket is stored on NTSB microfiche number 22065.
Accident occurred Monday, May 30, 1983 in HORSE CREEK, WY
Aircraft: PIPER 24-180, registration: N7079P
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT CRASHED IN ROLLING TERRAIN MINUS ABOUT 6 FT OF ITS LEFT WING. THIS PORTION OF WING WAS FOUND ABOUT 339 FT EAST OF THE MAIN WRECKAGE. EXAM REVEALED EVIDENCE THAT THE OUTBOARD PORTION OF THE WING SEPARATED IN AN UPWARD AND AFT DIRECTION INDICATIVE OF POSITIVE LOADING IN FLT. A TOXICOLOGY RPT ON THE DECEASED PLT AT FIRST REPTED AN ETHYL ALCOHOL CONTENT OF 0.38% IN A LIVER TISSUE FLUID SAMPLE. THIS WAS LATER CORRECTED TO .038%. THIS PLT HAD RECEIVED A WEATHER BRIEFINGS BY TELEPHONE BUT DID NOT FILE A FLT PLAN. AT 1121 THE ACFT DEPTED CHEYENNE & PROCEEDED NORTHWEST. AT 1146 THE PLT CALLED CHEYENNE APP CONTROL & SAID HE WAS IN CLOUDS & WANTED A VECTOR TO CHEYENNE', AFTER A BRIEF CONVERSATION THE PLT CONTACTED DENVER ARTCC WITH THE SAME MESSAGE EXCEPT FOR DESTINATION. HE WOULD NOW ACCEPT VECTORS TO ANY PLACE OUT OFTHE WX. AS SOON AS THE CONTROLLER GAVE A HEADING THE PLT RADIOED HE WAS IN TROUBLE & THERE WERE NO MORE TRANSMISSIONS. RADAR CONTACT WAS LOST AT 1151. A WITNESS SAID THE WX WAS OVERCAST AND 'I HEARD A HIGH PITCHED WHINE....& A LOUD BANG.'

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRSPEED..EXCESSIVE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FLIGHT INTO KNOWN ADVERSE WEATHER..INITIATED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

BECAME LOST/DISORIENTED..INADVERTENT..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VFR FLIGHT INTO IMC..CONTINUED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..CLOUDS



Contributing Factors

WING..FAILURE,PARTIAL


Contributing Factors

WING..OVERLOAD


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

WEATHER CONDITION..SNOW

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