What happened
During the landing roll, the right main gear of the aircraft collapsed. The failure occurred while the plane was decelerating on the runway surface. Following the collapse, an evacuation of the aircraft was initiated. A flight attendant received minor injuries during this process.
The investigation
Examination of the aircraft disclosed that the shock strut cylinder fractured circumferentially. The fracture location was approximately 10 inches below the top of the cylinder. Metallurgical examination of the fracture surface revealed evidence of pre-existing fatigue cracking.