What was found
CAPTAIN REPORTED THAT AFTER TAKEOFF, NOSE LANDING GEAR NOT RETRACTED, LIGHT ON, ABNORMAL PROCEDURE PERFORMED. AIRCRAFT SENT TO THE HANGAR AND NOSE LANDING GEAR OPERATIONAL TEST WAS PERFORMED. NOSE LANDING GEAR LINK WAS JAMMED DURING RETRACTION, THEREFORE NOSE LANDING GEAR WAS LUBRICATED IAW MM 32-30-00, TEST CORRECT. DURING OVERNIGHT SERVICE, A HYDRAULIC LEAK WAS DETECTED ON NOSE LANDING GEAR STRUT. NOSE LANDING GEAR O-RINGS WERE REPLACED IAW MM 32-21-02, TEST CORRECT.