As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DEPARTURE FROM KIND, RETRACTED LANDING GEAR AND DETECTED INCOMPLETE RETRACTION CYCLE. PLACED LANDING GEAR HANDLE IN DOWN POSITION WITH SUCCESSFUL GEAR EXTENSION. RETURNED TO KIND WITH UNEVENTFUL ARRIVAL. TROUBLESHOT LANDING GEAR RETRACTION PROBLEM AND ISOLATED TO THE NOSE LANDING GEAR UPLOCK MECHANISM. REPLACED UPLOCK MECHANISM AND PERFORMED SATISFACTORY OPERATIONAL CHECK OF SYSTEM.