Narrative:

On mar/xx/95 I was the PIC of a training flight that was involved in an aircraft incident. My student and I were practicing takeoffs and lndgs when the right main gear fell off the airplane. We had already made 1 normal landing to a full stop. It was on the second landing that the incident occurred. The wind was approximately 30 degrees to the left at 10 KTS. The approach was normal and the landing was made on the left wheel followed by the right, then the nosewheel touched the runway. The airplane ballooned slightly, approximately 2-3 ft above the runway, then the wheel assembly fell off. As the airplane settled back on the runway I momentarily added full power and turned the control wheel to the left in order to keep the wing from striking the runway. We traveled approximately 500 ft down the runway centerline on the 2 remaining wheels, then the right wing lowered slowly until it rested on the upper portion of the wheel assembly which is connected to the wing. We skidded approximately 100 ft until stopping on the right side of the runway with half of the airplane on the runway and the other half off. There was no substantial damage to the airplane, nor was there any property damage, other than the airplane, and no one was hurt. 2 days prior to the incident the right main gear strut had been svced and signed off for return to service. It is my opinion that the work was not done properly, thereby causing the right main gear assembly to fall off the airplane. After inspecting the gear assembly, it was determined by the aircraft owner, a certified mechanic and myself, that the reason the incident occurred was due to 1 of the 3 bolts securing the gear to the wing fell out.

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Original NASA ASRS Text

Title: R MAIN GEAR FELL OFF AFTER LNDG ACFT DAMAGED.

Narrative: ON MAR/XX/95 I WAS THE PIC OF A TRAINING FLT THAT WAS INVOLVED IN AN ACFT INCIDENT. MY STUDENT AND I WERE PRACTICING TKOFS AND LNDGS WHEN THE R MAIN GEAR FELL OFF THE AIRPLANE. WE HAD ALREADY MADE 1 NORMAL LNDG TO A FULL STOP. IT WAS ON THE SECOND LNDG THAT THE INCIDENT OCCURRED. THE WIND WAS APPROX 30 DEGS TO THE L AT 10 KTS. THE APCH WAS NORMAL AND THE LNDG WAS MADE ON THE L WHEEL FOLLOWED BY THE R, THEN THE NOSEWHEEL TOUCHED THE RWY. THE AIRPLANE BALLOONED SLIGHTLY, APPROX 2-3 FT ABOVE THE RWY, THEN THE WHEEL ASSEMBLY FELL OFF. AS THE AIRPLANE SETTLED BACK ON THE RWY I MOMENTARILY ADDED FULL PWR AND TURNED THE CTL WHEEL TO THE L IN ORDER TO KEEP THE WING FROM STRIKING THE RWY. WE TRAVELED APPROX 500 FT DOWN THE RWY CTRLINE ON THE 2 REMAINING WHEELS, THEN THE R WING LOWERED SLOWLY UNTIL IT RESTED ON THE UPPER PORTION OF THE WHEEL ASSEMBLY WHICH IS CONNECTED TO THE WING. WE SKIDDED APPROX 100 FT UNTIL STOPPING ON THE R SIDE OF THE RWY WITH HALF OF THE AIRPLANE ON THE RWY AND THE OTHER HALF OFF. THERE WAS NO SUBSTANTIAL DAMAGE TO THE AIRPLANE, NOR WAS THERE ANY PROPERTY DAMAGE, OTHER THAN THE AIRPLANE, AND NO ONE WAS HURT. 2 DAYS PRIOR TO THE INCIDENT THE R MAIN GEAR STRUT HAD BEEN SVCED AND SIGNED OFF FOR RETURN TO SVC. IT IS MY OPINION THAT THE WORK WAS NOT DONE PROPERLY, THEREBY CAUSING THE R MAIN GEAR ASSEMBLY TO FALL OFF THE AIRPLANE. AFTER INSPECTING THE GEAR ASSEMBLY, IT WAS DETERMINED BY THE ACFT OWNER, A CERTIFIED MECH AND MYSELF, THAT THE REASON THE INCIDENT OCCURRED WAS DUE TO 1 OF THE 3 BOLTS SECURING THE GEAR TO THE WING FELL OUT.

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.