NTSB Identification: SEA89LA022.
The docket is stored on NTSB microfiche number 38054.
Accident occurred Saturday, November 19, 1988 in OREGON CITY, OR
Probable Cause Approval Date: 12/29/1989
Aircraft: CESSNA 172, registration: N6408G
Injuries: 3 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 PILOT WAS LANDING HIS AIRCRAFT ON A VERY WET 1,170 FOOT GRASS RUNWAY. THE PILOT WAS NOT ABLE TO STOP THE AIRCRAFT BEFORE IT COLLIDED WITH A FENCE AT THE END OF THE RUNWAY. ACCORDING TO THE MANUFACTURERS PERFORMANCE FIGURES, UNDER THE GIVEN TEMPERATURE AND WIND CONDITIONS, THE RUNWAY LENGTH REQUIRED ON DRY GRASS WOULD BE 740 FEET. ALTHOUGH NOT ADDRESSED IN THE PILOT OPERATORS HANDBOOK, DUE TO THE EXTREME VARIABLES, CESSNA AIRCRAFT COMPANY ENGINEERS STATED THAT WET GRASS WOULD INCREASE THE LANDING DISTANCE 100 TO 300%.

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

UNSUITABLE TERRAIN OR TAKEOFF/LANDING/TAXI AREA..SELECTED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..GRASS


Contributing Factors

OBJECT..FENCE


Contributing Factors

TERRAIN CONDITION..WET


Contributing Factors

PERFORMANCE DATA..UNAVAILABLE..MANUFACTURER

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