Narrative:

On a beautiful day I was making a visual approach to a non controled airport (alexandria, mn). I completed the landing checklist and searched for other possible non radio traffic as I flew down final approach. As the airplane settled to the runway, the propellers began striking the runway. The subsequent slide to a stop was uneventful. Upon further investigation I saw that the gear handle was down but the gear had not moved to the down and locked position. At no time did I hear a warning horn. Subsequent investigation by mechanics revealed that all system worked fine. It is possible for a switch or circuit breaker to fail once for no apparent reason. But that was not what caused the airplane to be landed gear up. While searching for other possible traffic is a positive collision avoidance technique, it should not displace attention to necessary duties in the cockpit. Something as simple as appreciating a beautiful evening can become a distraction. After moving the gear handle down, my hand (and mind) moved on to other duties, and I failed to verify that the gear was down. Callback conversation with reporter revealed the following information: the reporter stated the maintenance action performed was adjustment of the landing gear warning horn due to low sound level and work done on the landing gear handle and circuit. The reporter said the aircraft had a previous history of landing gear indication problems. The reporter states that no rechk of the panel gear position indication was made after the handle was placed to down.

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Original NASA ASRS Text

Title: A BEECH 80 ON LNDG WITH NO LNDG GEAR WARNING HORN OR UNSAFE LIGHTS ILLUMINATED. LANDED WITH THE GEAR UP.

Narrative: ON A BEAUTIFUL DAY I WAS MAKING A VISUAL APCH TO A NON CTLED ARPT (ALEXANDRIA, MN). I COMPLETED THE LNDG CHKLIST AND SEARCHED FOR OTHER POSSIBLE NON RADIO TFC AS I FLEW DOWN FINAL APCH. AS THE AIRPLANE SETTLED TO THE RWY, THE PROPS BEGAN STRIKING THE RWY. THE SUBSEQUENT SLIDE TO A STOP WAS UNEVENTFUL. UPON FURTHER INVESTIGATION I SAW THAT THE GEAR HANDLE WAS DOWN BUT THE GEAR HAD NOT MOVED TO THE DOWN AND LOCKED POS. AT NO TIME DID I HEAR A WARNING HORN. SUBSEQUENT INVESTIGATION BY MECHS REVEALED THAT ALL SYS WORKED FINE. IT IS POSSIBLE FOR A SWITCH OR CIRCUIT BREAKER TO FAIL ONCE FOR NO APPARENT REASON. BUT THAT WAS NOT WHAT CAUSED THE AIRPLANE TO BE LANDED GEAR UP. WHILE SEARCHING FOR OTHER POSSIBLE TFC IS A POSITIVE COLLISION AVOIDANCE TECHNIQUE, IT SHOULD NOT DISPLACE ATTN TO NECESSARY DUTIES IN THE COCKPIT. SOMETHING AS SIMPLE AS APPRECIATING A BEAUTIFUL EVENING CAN BECOME A DISTR. AFTER MOVING THE GEAR HANDLE DOWN, MY HAND (AND MIND) MOVED ON TO OTHER DUTIES, AND I FAILED TO VERIFY THAT THE GEAR WAS DOWN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE MAINT ACTION PERFORMED WAS ADJUSTMENT OF THE LNDG GEAR WARNING HORN DUE TO LOW SOUND LEVEL AND WORK DONE ON THE LNDG GEAR HANDLE AND CIRCUIT. THE RPTR SAID THE ACFT HAD A PREVIOUS HISTORY OF LNDG GEAR INDICATION PROBS. THE RPTR STATES THAT NO RECHK OF THE PANEL GEAR POS INDICATION WAS MADE AFTER THE HANDLE WAS PLACED TO DOWN.

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.