Narrative:

After normal landing; approximately 3 seconds into ground rollout; heard a loud crack and saw left main gear depart aircraft hitting left wing strut and then left side of fuselage. [I] controlled aircraft tracking straight down paved runway slowing down. As aircraft speed slowed [it] weather vaned into wind and I departed runway to the left still in control until wingtip dipped. [I] pulled engine mixture to off prior to stopping. Existing cracks in 33 year old gear caused gear to fail; which caused incident.

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Original NASA ASRS Text

Title: Decathlon pilot reports landing gear separation from the aircraft shortly after touching down on a paved runway. As the the aircraft slows it departs the runway to the left.

Narrative: After normal landing; approximately 3 seconds into ground rollout; heard a loud crack and saw left main gear depart aircraft hitting left wing strut and then left side of fuselage. [I] controlled aircraft tracking straight down paved runway slowing down. As aircraft speed slowed [it] weather vaned into wind and I departed runway to the left still in control until wingtip dipped. [I] pulled engine mixture to off prior to stopping. Existing cracks in 33 year old gear caused gear to fail; which caused incident.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.