Narrative:

On downwind to runway 35 at ZZZ1, the right main landing gear indicated unsafe (2 green gear down lights only). We proceeded to lantana airport, fl, where there is a beechcraft maintenance facility. En route, we removed the copilot's seat and found a bent actuator rod. I contacted the FBO manager who called the crash fire rescue equipment department and the local beech experts. I did a fly-by along runway 9 where the beechcraft experts could see that the 3 landing gear were down. After talking the situation over with my copilot (also a beech expert) and the ground maintenance people, we briefed an emergency landing on runway 9. On final, my copilot cracked open his passenger door and, over the threshold, I closed the mixtures and feathered both propellers. Aircraft touched down smoothly and tracked straight until, at a slow speed, the right main landing gear retracted inwards. Even with full left rudder, aileron, and heavy left braking, we stopped a few ft off the right side of runway 9. I shut off all switches and fuel selectors and we exited the right side. The fire trucks were immediately there and the baron had only minor damage. An FAA inspector arrived about 1 hour later and classified the gear collapse as an incident. Aircraft was lifted, right main landing gear pushed and clamped in position, and towed to a maintenance hangar. The right main landing gear actuator rod was found bent under the copilot's seat.

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Original NASA ASRS Text

Title: A BE55 PLT, ON DOWNWIND FOR RWY 35 AT PHK, NOTICED THAT HIS LNDG GEAR INDICATION WAS UNSAFE AND TOOK APPROPRIATE ACTION.

Narrative: ON DOWNWIND TO RWY 35 AT ZZZ1, THE R MAIN LNDG GEAR INDICATED UNSAFE (2 GREEN GEAR DOWN LIGHTS ONLY). WE PROCEEDED TO LANTANA ARPT, FL, WHERE THERE IS A BEECHCRAFT MAINT FACILITY. ENRTE, WE REMOVED THE COPLT'S SEAT AND FOUND A BENT ACTUATOR ROD. I CONTACTED THE FBO MGR WHO CALLED THE CFR DEPT AND THE LCL BEECH EXPERTS. I DID A FLY-BY ALONG RWY 9 WHERE THE BEECHCRAFT EXPERTS COULD SEE THAT THE 3 LNDG GEAR WERE DOWN. AFTER TALKING THE SIT OVER WITH MY COPLT (ALSO A BEECH EXPERT) AND THE GND MAINT PEOPLE, WE BRIEFED AN EMER LNDG ON RWY 9. ON FINAL, MY COPLT CRACKED OPEN HIS PAX DOOR AND, OVER THE THRESHOLD, I CLOSED THE MIXTURES AND FEATHERED BOTH PROPS. ACFT TOUCHED DOWN SMOOTHLY AND TRACKED STRAIGHT UNTIL, AT A SLOW SPD, THE R MAIN LNDG GEAR RETRACTED INWARDS. EVEN WITH FULL L RUDDER, AILERON, AND HVY L BRAKING, WE STOPPED A FEW FT OFF THE R SIDE OF RWY 9. I SHUT OFF ALL SWITCHES AND FUEL SELECTORS AND WE EXITED THE R SIDE. THE FIRE TRUCKS WERE IMMEDIATELY THERE AND THE BARON HAD ONLY MINOR DAMAGE. AN FAA INSPECTOR ARRIVED ABOUT 1 HR LATER AND CLASSIFIED THE GEAR COLLAPSE AS AN INCIDENT. ACFT WAS LIFTED, R MAIN LNDG GEAR PUSHED AND CLAMPED IN POS, AND TOWED TO A MAINT HANGAR. THE R MAIN LNDG GEAR ACTUATOR ROD WAS FOUND BENT UNDER THE COPLT'S SEAT.

Data retrieved from NASA's ASRS site as of July 2007 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.