Narrative:

After receiving clearance to land and slowing to below gear speed, the landing gear lever was found to be stuck in the up position. I notified the tower and requested to depart the pattern. I maintained an airspeed of 90 mph. Emergency check per procedures for the aircraft. Verified hydraulic pressure (ok). Released the gear uplocks using the emergency lever. Tried the gear lever again with some force. The lever went to the down position. 3 green lights. Felt as though something gave at the lever. Slowed aircraft to 80 mph. Checked gear lights again -- all ok. Called tower and requested a fly-by to have the tower check the gear. Cleared over the right runway. Tower advised all gear was down. I requested left traffic for runway 28L after fly-by. Tower approved and I checked the gear several times on downwind. Tower requested extended downwind for helicopter traffic. Turned final and performed gump check several more times. All ok. Used partial flaps for smooth touchdown. All ok at this time. While decelerating on rollout (approximately 20-30 mph), the right main gear started to come up, lowering the right wing slowly to the runway. I looked at the gear lever at this time and it was not in its detent. It had moved from the full down position. I moved the lever back to the full down position and shut down the engine while coming to a stop on the runway. After stopping, I turned off all electrical, fuel and magnetos. I later found the gear lever safety arm bent behind the panel. This held the gear lever from fully entering the down detent. After raising the aircraft, I telephoned the tower and requested clearance to tow the aircraft from the runway. Tower issued clearance to tow the aircraft. Always check the gear down lever along with gear position lights. This should be done during approach, on touchdown and rollout.

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Original NASA ASRS Text

Title: NAVION PLT HAD THE R MAIN GEAR COLLAPSE ON LNDG ROLL.

Narrative: AFTER RECEIVING CLRNC TO LAND AND SLOWING TO BELOW GEAR SPD, THE LNDG GEAR LEVER WAS FOUND TO BE STUCK IN THE UP POS. I NOTIFIED THE TWR AND REQUESTED TO DEPART THE PATTERN. I MAINTAINED AN AIRSPD OF 90 MPH. EMER CHK PER PROCS FOR THE ACFT. VERIFIED HYD PRESSURE (OK). RELEASED THE GEAR UPLOCKS USING THE EMER LEVER. TRIED THE GEAR LEVER AGAIN WITH SOME FORCE. THE LEVER WENT TO THE DOWN POS. 3 GREEN LIGHTS. FELT AS THOUGH SOMETHING GAVE AT THE LEVER. SLOWED ACFT TO 80 MPH. CHKED GEAR LIGHTS AGAIN -- ALL OK. CALLED TWR AND REQUESTED A FLY-BY TO HAVE THE TWR CHK THE GEAR. CLRED OVER THE R RWY. TWR ADVISED ALL GEAR WAS DOWN. I REQUESTED L TFC FOR RWY 28L AFTER FLY-BY. TWR APPROVED AND I CHKED THE GEAR SEVERAL TIMES ON DOWNWIND. TWR REQUESTED EXTENDED DOWNWIND FOR HELI TFC. TURNED FINAL AND PERFORMED GUMP CHK SEVERAL MORE TIMES. ALL OK. USED PARTIAL FLAPS FOR SMOOTH TOUCHDOWN. ALL OK AT THIS TIME. WHILE DECELERATING ON ROLLOUT (APPROX 20-30 MPH), THE R MAIN GEAR STARTED TO COME UP, LOWERING THE R WING SLOWLY TO THE RWY. I LOOKED AT THE GEAR LEVER AT THIS TIME AND IT WAS NOT IN ITS DETENT. IT HAD MOVED FROM THE FULL DOWN POS. I MOVED THE LEVER BACK TO THE FULL DOWN POS AND SHUT DOWN THE ENG WHILE COMING TO A STOP ON THE RWY. AFTER STOPPING, I TURNED OFF ALL ELECTRICAL, FUEL AND MAGNETOS. I LATER FOUND THE GEAR LEVER SAFETY ARM BENT BEHIND THE PANEL. THIS HELD THE GEAR LEVER FROM FULLY ENTERING THE DOWN DETENT. AFTER RAISING THE ACFT, I TELEPHONED THE TWR AND REQUESTED CLRNC TO TOW THE ACFT FROM THE RWY. TWR ISSUED CLRNC TO TOW THE ACFT. ALWAYS CHK THE GEAR DOWN LEVER ALONG WITH GEAR POS LIGHTS. THIS SHOULD BE DONE DURING APCH, ON TOUCHDOWN AND ROLLOUT.

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.