NTSB Identification: DEN88FA128.
The docket is stored on NTSB microfiche number 34871.
Accident occurred Thursday, December 10, 1987 in AFTON, WY
Probable Cause Approval Date: 06/16/1989
Aircraft: CESSNA 177RG, registration: N1868Q
Injuries: 2 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 WAS NOT CERTIFIED NOR EQUIPPED FOR FLT INTO ICING CONDITIONS. THE PLT ELECTED TO DEPART EVEN THOUGH HE WAS ADVISED BY THE CREW OF A C-182 THAT HAD JUST LNDD TO STAY BELOW THE CLOUDS BECAUSE OF ICING. AFTER TKOF THE ACFT CLEARED AN 11000 FT MTN RANGE BUT COLLIDED WITH THE NEXT RANGE WHILE IN A WINGS LEVEL DESCENT AT 9200 FT. THE ACFT WAS NOT FOUND UNTIL JUNE 14, 1988. RECORDS AT THE NATIONAL WEATHER SERVICE INDICATE THAT THE WEATHER IN THE AREA OF THE ACCD AT THE TIME WAS OVERCAST SKIES WITH SNOW AND MODERATE ICING IN THE CLOUDS.

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

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..ATTEMPTED..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



Contributing Factors

WEATHER CONDITION..CLOUDS


Contributing Factors

WEATHER CONDITION..ICING CONDITIONS


Contributing Factors

FLIGHT ADVISORIES..DISREGARDED..PILOT IN COMMAND

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