As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED A CRACK ON THE FRONT SPAR LOWER SECTION OF THE LT WINGTIP. MAINTENANCE REMOVED & REPLACED THE LT WINGTIP ASSY IAW AMM 57-30-00 & 57-30-25 AIRCRAFT IS CURRENTLY STILL IN HEAVY CHECK.