NTSB Identification: DEN86LA222.
The docket is stored on NTSB microfiche number 32339.
Accident occurred Thursday, August 07, 1986 in TOOELE, UT
Aircraft: BOEING E75, registration: N1387V
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PLT RPRTD THAT HE ENCOUNTERED A DOWNDRAFT WHILE CROSSING A RIDGELINE IN MOUNTAINOUS TERRAIN, APRX 5 MI NE OF TOOELE,UT. THE ELEV OF THE ACDNT SITE WAS ABOUT 9,000 FT & THE TEMP WAS RPRTD BY THE PLT TO BE 80 DEG. THIS WOULD HAVE RESULTEDIN A DENSITY ALT OF ABOUT 12,500 FT. THE PLT SAID HE SHOULD HAVE SELECTED A ROUTE AROUND THE MOUNTAINS.

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..HIGH DENSITY ALTITUDE


Contributing Factors

WEATHER CONDITION..DOWNDRAFT


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..RISING

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