NTSB Identification: CHI98LA005.
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Accident occurred Sunday, October 05, 1997 in SANDWICH, IL
Probable Cause Approval Date: 01/07/1998
Aircraft: Cessna 172N, registration: N73899
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.
In an interview, the pilot stated that he obtained weather information from a television broadcast prior to his planned local flight. The winds were reported out of the south at 30 knots with gusts. The pilot said that while taxiing to the north/south grass runway the winds were strong, and immediately after the southbound takeoff it became 'gusty.' He opted to stay in the traffic pattern and re-land. The pilot recalled that while on final the flaps were extended 'one notch,' and the indicated airspeed was 65 knots. After reducing the power to idle just prior to the flare, the pilot stated that the airplane encountered a wind shear. He said a gust pitched the airplane up, then the wind abruptly stopped, causing the airplane to pitch nose down and collide with the runway. The nose gear separated from the airframe and the airplane nosed over, coming to rest inverted. In an interview, the right seat passenger said that the approach seemed normal. The airplane leveled off over the runway, then floated for a little bit. He said the airplane then quickly nosed up then 'banged down.' He recalls the flaps extended 'one notch' prior to impact. Neither the pilot nor the passenger remembers hearing a stall warning.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: the pilot's inability to maintain flying airspeed resulting in an inadvertent stall/mush. A factor contributing to this accident was the wind gust. Full narrative available
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