What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Centennial tower cleared aircraft for a visual downwind to landing on 35L. Pilot configured aircraft for landing on downwind and got a green light for the landing gear.
During landing there was one bounce before settling to the runway. Aircraft rolled a few seconds before pilot noticed some wobbliness; then the right wing slowly started to drop. Pilot thought aircraft had a flat tire so held up the wing with ailerons and started to brake. However, as aircraft slowed, aircraft veered off the runway into the grass on the right side of the runway. Pilot was able to shutdown the engine before aircraft exited the runway.
Upon inspection of aircraft by the iic and mechanic the landing gear selector lever was close to the down position but not completely into the down position. Aircraft was put on jacks and the landing gear was cycled by the mechanics and determined to be functioning correctly. The mechanics were able to duplicate the scenario of the gear selector lever being mostly down but not completely down and get a gear down green light. It was determined that without the landing gear selector lever being in the completely down position that the landing gear is still in transition and possibly not down and locked, which was the case with the right main in this particular accident.
As the FAA filed it
CENTENNIAL TOWER CLEARED AIRCRAFT FOR A VISUAL DOWNWIND TO LANDING ON 35L. PILOT CONFIGURED AIRCRAFT FOR LANDING ON DOWNWIND AND GOT A GREEN LIGHT FOR THE LANDING GEAR.
DURING LANDING THERE WAS ONE BOUNCE BEFORE SETTLING TO THE RUNWAY. AIRCRAFT ROLLED A FEW SECONDS BEFORE PILOT NOTICED SOME WOBBLINESS; THEN THE RIGHT WING SLOWLY STARTED TO DROP. PILOT THOUGHT AIRCRAFT HAD A FLAT TIRE SO HELD UP THE WING WITH AILERONS AND STARTED TO BRAKE. HOWEVER, AS AIRCRAFT SLOWED, AIRCRAFT VEERED OFF THE RUNWAY INTO THE GRASS ON THE RIGHT SIDE OF THE RUNWAY. PILOT WAS ABLE TO SHUTDOWN THE ENGINE BEFORE AIRCRAFT EXITED THE RUNWAY.
UPON INSPECTION OF AIRCRAFT BY THE IIC AND MECHANIC THE LANDING GEAR SELECTOR LEVER WAS CLOSE TO THE DOWN POSITION BUT NOT COMPLETELY INTO THE DOWN POSITION. AIRCRAFT WAS PUT ON JACKS AND THE LANDING GEAR WAS CYCLED BY THE MECHANICS AND DETERMINED TO BE FUNCTIONING CORRECTLY. THE MECHANICS WERE ABLE TO DUPLICATE THE SCENARIO OF THE GEAR SELECTOR LEVER BEING MOSTLY DOWN BUT NOT COMPLETELY DOWN AND GET A GEAR DOWN GREEN LIGHT. IT WAS DETERMINED THAT WITHOUT THE LANDING GEAR SELECTOR LEVER BEING IN THE COMPLETELY DOWN POSITION THAT THE LANDING GEAR IS STILL IN TRANSITION AND POSSIBLY NOT DOWN AND LOCKED, WHICH WAS THE CASE WITH THE RIGHT MAIN IN THIS PARTICULAR ACCIDENT.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.