What was found
LOUD BUMP WAS HEARD AND FELT IN THE NOSE COMPARTMENT DURING CRUISE. JACKED AIRCRAFT, INSPECTED NOSE STRUT, UPLOCK & SWITCH. INSPECTED MAIN GEAR UPLOCKS AND SWITCHES, NO DISCREPANCIES NOTED. C/W GEAR SWING, FOUND ALL UPLOCK ROLLERS SEATED CORRECTLY IN HOOKS. FOUND SWITCHES MAKING CORRECTLY AND GEAR RELEASE CABLE RIG GOOD. UNABLE TO DUPLICATE DISCREPANCY, FOUND ORIGINAL LANDING GEAR CONTROL VALVE P/N 991664HO INSTALLED. LANDING GEAR CONTROL SYSTEM OPS CHECK GOOD IAW CE750 MM 32-30-00.