What was found
PHL - FL1901 - AFTER EXTENDING LANDING GEAR ON APPROACH, CREW RECEIVED THREE GREEN GEAR LIGHTS PLUS THREE RED GEAR UNSAFE LIGHTS WHICH STAYED ILLUMINATED. RECYCLED GEAR AND RECEIVED NORMAL GEAR INDICATION. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE JACKED AIRCRAFT AND PERFORMED EXTENSION AND RETRACTION CHECK PER M. SYSTEM CHECKED NORMAL. LUBRICATED GEAR SELECTOR HANDLE. OPS CHECK GOOD. (M)