NTSB Identification: SEA92LA173.
The docket is stored on NTSB microfiche number 46876.
Accident occurred Tuesday, August 04, 1992 in FARMINGTON, UT
Probable Cause Approval Date: 08/31/1993
Aircraft: PIPER PA-32R-300, registration: N7091C
Injuries: 5 Minor.
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 PILOT OF THE PA-32R-300 ELECTED TO TURN INTO A BOX CANYON DURING HIS EN ROUTE CLIMB TO CRUISE. AT THE TIME HE TURNED INTO THE CANYON, THE PILOT FELT THAT THE RATE OF CLIMB WOULD ASSURE CLEARANCE OF THE RIDGE AT THE END OF THE CANYON. AFTER ENTERING THE CANYON THE AIRCRAFT ENCOUNTERED AN AREA OF DOWNDRAFTS. THE DESCENDING AIR REDUCED THE RATE OF CLIMB TO AN EXTENT THAT WOULD NOT ALLOW THE AIRCRAFT TO OUTCLIMB THE RISING TERRAIN. BY THIS TIME THE PILOT FELT THAT, BECAUSE OF THE NARROWNESS OF THE CANYON, HE COULD NOT SUCCESSFULLY REVERSE COURSE. HE THEREFORE ELECTED TO CONTINUE UP THE CANYON, WHERE HE EVENTUALLY FLEW THE AIRCRAFT THROUGH A CONTROLLED IMPACT WITH THE TERRAIN.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT'S POOR INFLIGHT DECISION. FACTORS INCLUDE DOWNDRAFTS AND A BOX CANYON.
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