As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRIC LANDING GEAR EXTENSION FAILED INFLIGHT. NORMAL LANDING ACCOMPLISHED USING MANUAL GEAR EXTENSION. LANDING GEAR MOTOR BRUSHES FOUND WORN EXCESSIVELY, COMMUTATOR PITTED. OVERHAULED MOTOR INSTALLED, NEW FILTER INSTALLED. GEAR RETRACTION CHECKS PERFORMED ON JACKS, ALL CHECKS NORMAL. THERE IS NO PUBLISHED INSPECTION TIME FOR THE GEAR MOTOR BRUSHES ON HYDRAULIC GEAR. MFG SUGGEST INSPECTING GEAR MOTOR BRUSHES AT REGULAR INTERVALS. (K)