NTSB Identification: IAD01LA040.
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Accident occurred Thursday, April 05, 2001 in Williamsport, PA
Probable Cause Approval Date: 08/26/2003
Aircraft: Cessna 172P, registration: N65630
Injuries: 3 Minor.
NTSB investigators may have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
During landing, the airplane touched down and drifted right towards the infield. The pilot aborted the landing, but the airplane did not climb, and departed the left side of the runway. The stall warning horn sounded, the airplane struck a fence, and then came to rest on a railroad bed. The pilot stated that when he aborted the landing, he retracted the flaps completely from their fully deployed, 30-degree position. The pilot reported that the airplane reached a height of no more than 10 - 15 feet after he applied full throttle. According to the airplane's Information Manual, the flaps are to be retracted incrementally; to the 10-degree position until obstacles are cleared, and not fully retracted until the airplane reaches a safe altitude and 60 knots indicated airspeed. According to the FAA Pilot's Handbook of Aeronautical Knowledge: "The effect of torque increases in direct proportion to engine power, airspeed, and airplane attitude. If the power setting is high, the airspeed slow, and the angle of attack high, the effect of torque is greater. During takeoffs and climbs, when the effect of torque is most pronounced, the pilot must apply sufficient right rudder pressure to counteract the left-turning tendency and maintain a straight takeoff path."
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's premature raising of flaps resulting in his failure to establish a climb and his failure to maintain directional control. Full narrative available
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