NTSB Identification: ATL99LA124.
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Accident occurred Sunday, September 05, 1999 in ENTERPRISE, AL
Probable Cause Approval Date: 11/30/2000
Aircraft: Cessna 190, registration: N9872A
Injuries: 2 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.
After approximately one hour of pleasure flying in the local flying area, the two pilots returned to the departure airport for a full-stop landing. After touchdown, the airplane had rolled several hundred feet, when the pilot felt an unusual sensation in the airframe. At approximately the same time, the left spring leaf landing gear assembly separated from the airframe, and the airplane fell to the ground. The field examination of the fracture face disclosed evidence of a preexisting fracture in the steel material. During the follow-up examination of the fracture face, with the aid of a bench binocular microscope, revealed the presence of at least three small fracture areas typical of fatigue cracking. The origin of the fatigue cracking was damaged during the ultimate separation. The examination also disclosed that the fatigue origin was located in an area that showed fretting damage.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The fatigue failure of the main landing gear spring. Full narrative available
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