What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On June 11, 2024 aircraft planned direct flight from kfay to kags all aspects of the takeoff and flight were normal.
Prior to landing pilot took standard approach with calm winds forecasted by tower. While landing the aircraft the pilot noticed a slight drop, nothing significant.
After touch down pilot had nose aligned down centerline with feet on pedals preparing to keep the aircraft centered on the runway, but felt the aircraft continuing to turn right. Within seconds, it turned approximately 45 degrees right. Pilot then pressed both brake pedals, especially the left pedal, attempting to stop the plane before it went off the runway. It continued sliding nonetheless. When the aircraft reached the grass, it slide a little further and then abruptly turned an additional 45 degrees to the right and came to stop with the engines still running normally. The pilot informed tower of the situation, shutdown the plane, confirmed passenger was safe and uninjured, and exited the plane.
After inspecting the aircraft for damage the pilot noticed right main landing gear was turned 90 degrees and that the scissor link was disconnected. No crew or passenger injuries, damage to airport equipment, or aircraft damage reported.
Certificated mechanic inspected right main gear scissor linkage, upper trunnion attach points and actuator attach points, no defects noted.
At upper and lower scissor attach point mechanic found pieces of sheared washer material which would indicate a worn washer or that the washer sheared off from intensive repetitive side load landings causing the washer to shear.
There is no know method to identify the exact cause of the shearing.
Aircraft was less than a week from annual inspection prior to this incident.
Scissor link was inspected and reattached in accordance with Cessna maintenance manual page 4-82, paragraph 11-12. Aircraft requested ferry permit to be relocated to perform annual inspection.
As the FAA filed it
ON JUNE 11, 2024 AIRCRAFT PLANNED DIRECT FLIGHT FROM KFAY TO KAGS ALL ASPECTS OF THE TAKEOFF AND FLIGHT WERE NORMAL.
PRIOR TO LANDING PILOT TOOK STANDARD APPROACH WITH CALM WINDS FORECASTED BY TOWER. WHILE LANDING THE AIRCRAFT THE PILOT NOTICED A SLIGHT DROP, NOTHING SIGNIFICANT.
AFTER TOUCH DOWN PILOT HAD NOSE ALIGNED DOWN CENTERLINE WITH FEET ON PEDALS PREPARING TO KEEP THE AIRCRAFT CENTERED ON THE RUNWAY, BUT FELT THE AIRCRAFT CONTINUING TO TURN RIGHT. WITHIN SECONDS, IT TURNED APPROXIMATELY 45 DEGREES RIGHT. PILOT THEN PRESSED BOTH BRAKE PEDALS, ESPECIALLY THE LEFT PEDAL, ATTEMPTING TO STOP THE PLANE BEFORE IT WENT OFF THE RUNWAY. IT CONTINUED SLIDING NONETHELESS. WHEN THE AIRCRAFT REACHED THE GRASS, IT SLIDE A LITTLE FURTHER AND THEN ABRUPTLY TURNED AN ADDITIONAL 45 DEGREES TO THE RIGHT AND CAME TO STOP WITH THE ENGINES STILL RUNNING NORMALLY. THE PILOT INFORMED TOWER OF THE SITUATION, SHUTDOWN THE PLANE, CONFIRMED PASSENGER WAS SAFE AND UNINJURED, AND EXITED THE PLANE.
AFTER INSPECTING THE AIRCRAFT FOR DAMAGE THE PILOT NOTICED RIGHT MAIN LANDING GEAR WAS TURNED 90 DEGREES AND THAT THE SCISSOR LINK WAS DISCONNECTED. NO CREW OR PASSENGER INJURIES, DAMAGE TO AIRPORT EQUIPMENT, OR AIRCRAFT DAMAGE REPORTED.
CERTIFICATED MECHANIC INSPECTED RIGHT MAIN GEAR SCISSOR LINKAGE, UPPER TRUNNION ATTACH POINTS AND ACTUATOR ATTACH POINTS, NO DEFECTS NOTED.
AT UPPER AND LOWER SCISSOR ATTACH POINT MECHANIC FOUND PIECES OF SHEARED WASHER MATERIAL WHICH WOULD INDICATE A WORN WASHER OR THAT THE WASHER SHEARED OFF FROM INTENSIVE REPETITIVE SIDE LOAD LANDINGS CAUSING THE WASHER TO SHEAR.
THERE IS NO KNOW METHOD TO IDENTIFY THE EXACT CAUSE OF THE SHEARING.
AIRCRAFT WAS LESS THAN A WEEK FROM ANNUAL INSPECTION PRIOR TO THIS INCIDENT.
SCISSOR LINK WAS INSPECTED AND REATTACHED IN ACCORDANCE WITH CESSNA MAINTENANCE MANUAL PAGE 4-82, PARAGRAPH 11-12. AIRCRAFT REQUESTED FERRY PERMIT TO BE RELOCATED TO PERFORM ANNUAL INSPECTION.
Other reports on N4680N · 1
Matched to the same aircraft by N-number and date.