Narrative:

Landing at ZZZ airport; the landing gear was extended and confirmed down. During rollout; the gear collapsed. Callback conversation with reporter revealed the following information: the reporter stated the cause of the left main gear failure is unknown as the airplane has not been put on jacks and the gear tested. The left wing was damaged when it struck a runway light as the airplane skidded along the runway. Engines need to be torn down and propellers must be replaced and the leading edge of the left wing needs a costly repair.

Google
 

Original NASA ASRS Text

Title: A BE60 ON LNDG ROLLOUT HAD THE L MAIN LNDG GEAR COLLAPSE INCURRING DAMAGE TO THE L WING; FUSELAGE LOWER SKIN; ENGS AND PROPS.

Narrative: LNDG AT ZZZ ARPT; THE LNDG GEAR WAS EXTENDED AND CONFIRMED DOWN. DURING ROLLOUT; THE GEAR COLLAPSED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE L MAIN GEAR FAILURE IS UNKNOWN AS THE AIRPLANE HAS NOT BEEN PUT ON JACKS AND THE GEAR TESTED. THE L WING WAS DAMAGED WHEN IT STRUCK A RWY LIGHT AS THE AIRPLANE SKIDDED ALONG THE RWY. ENGS NEED TO BE TORN DOWN AND PROPS MUST BE REPLACED AND THE LEADING EDGE OF THE L WING NEEDS A COSTLY REPAIR.

Data retrieved from NASA's ASRS site as of January 2009 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.