As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, INITIATED MLG HANDLE TO DOWN POSITION, NOSE & RT MLG EXTENDED PROPERLY, LT MLG REMAINED UP. RECEIVED A WARNING INDICATION & A LT GEAR UNLOCK LIGHT. PERFORMED MANUAL EXTENSION USING AUXILERY HYD HAND PUMP, MLG EXTENDED PROPERLY & LOCKED DOWN. 3 GEAR DOWN AND LOCKED. LANDING SUCCESSFUL WITHOUT INCIDENT. INVESTIGATION FOUND SHIM STACK PN 25UM1153-1 WAS OUT OF TOLERANCE