What was found
(CAN) UPON DEPARTURE, THE CREW REPORTED LOUD CLUNK NOISE UNDER FLIGHT DECK DURING GEAR RETRACTION. MAINTENANCE INSPECTED AIRCRAFT AND FOUND LT NLG ASSIST SPRING ASSEMBLY HAD FAILED AND CAUSED A 12 X 8 HOLE IN UPPER NOSE WELL. ASSISTOR SPRING WAS REPLACED AND HOLE WAS REPAIRED IAW THE PRINCIPALS OF RIL HC537H9252 AT ISSUE 1 IN REFERENCE TO BARA/AVR/6774/04-DC. GEAR SWINGS WERE CARRIED OUT AS SERVICEABLE AND AIRCRAFT WAS RETURNED TO SERVICE. TIMES FOR THIS PART ARE LISTED AS AIRCRAFT TIMES.