NTSB Identification: SEA93LA006.
The docket is stored on NTSB microfiche number 47781.
Accident occurred Tuesday, October 20, 1992 in SISTERS, OR
Probable Cause Approval Date: 09/14/1993
Aircraft: CESSNA 150L, registration: N19092
Injuries: 2 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 RENTED CESSNA 150 MADE A NUMBER OF PASSES OVER THE ELK HUNTING CAMP IN AN AREA WERE THE DENSITY ALTITUDE WAS OVER 7000 FEET. HE REPORTED THAT, ALTHOUGH THERE WAS VERY LITTLE TURBULENCE IN THE AREA, THE WINDS MUST HAVE BEEN FAIRLY STRONG BECAUSE THE GROUNDSPEED OF THE AIRCRAFT WAS SIGNIFICANTLY DIFFERENT ON EACH PASS, DEPENDING ON THE DIRECTION THE AIRCRAFT WAS HEADING. ON THE LAST PASS, THE PILOT ADDED POWER BUT WAS UNABLE TO OUTCLIMB THE RISING TERRAIN. HE REPORTED THAT THE ENGINE SEEMED TO BE RUNNING FINE, BUT THE AIRCRAFT WAS DESCENDING AT 800 FEET PER MINUTE WHILE AT FULL POWER.

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

THE PILOT'S POOR INFLIGHT DECISION. FACTORS INCLUDE MOUNTAINOUS/HILLY TERRAIN, TREES, HIGH DENSITY ALTITUDE, AND DOWNDRAFTS.

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