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 AND UPPER SECTION OF THE RT WINGTIP. (CRACK LENGTH: LOWER AREA: 2.3" UPPER AREA: 0.5") MAINTENANCE REMOVED & REPLACED THE RT WINGTIP ASSY IAW AMM 57-30-00 & 57-30-25 AIRCRAFT IS CURRENTLY STILL IN FOR HEAVY CHECK COMPLETION.