What was found
DURING HEAVY MAINTENANCE: WINGS / RH WING / FIXED LEADING-EDGE SKIN / AT SLAT TRACK #6 / CRACK – PERMANENT REPAIR; REFERENCES: /1/ AIRBUS REO 500-57-41-709 /2/ AVIANOR DAMAGE REPORT A49107-1090 /3/ MX-244. DESCRIPTION: DURING CURRENT C1 CHECK (09/2024) ON N3085J (MSN: 55132) @ YMX, WHILE REPAIRING CRACK DAMAGE ON THE RH WING FIXED LEADING EDGE-SKIN SLAT TRACK 6 (P/N:C01612076-005 S/N:AS003185) PER GREO-500-57-41-025, AVIANOR REPORTS 3 HOLES WERE MISS DRILLED ON THE FIXED WING LEADING EDGE SKIN. AVIANOR REPORTED THIS DEVIATION TO AIRBUS CANADA FOR FURTHER DISPOSITION ON REPAIR OF THE CRACK DAMAGE. SEE REF /2/ AVIANOR DAMAGE REPORT, FOR FULL DETAILS. AIRBUS CANADA PROVIDED REF /1/ REO, AS DISPOSITION FOR PERMANENT REPAIR INSTRUCTIONS. THE REPAIR INSTRUCTIONS CONSIST OF CUTTING OUT THE DAMAGED AREA AND PERFORMING A SKIN INSERT REPAIR IN ACCORDANCE WITH REF. /1/ REO. EC AC24-1093-01 IS ISSUED TO ACCOMPLISH THE PERMANENT REPAIR PER REF /1/ REO. SUBSTANTIATION: THIS PERMANENT REPAIR IS APPROVED PER REF /1/, REO AND IS CLASSIFIED AS MINOR IAW REF /3/ MX-244 GUIDELINES.**REV 01** UPON FURTHER REVIEW, WING LEADING EDGE SLAT SKIN IS CLASSIFIED AS PRIMARY STRUCTURE PER ASRP BD500-A-J51-00-00-01AAA-030A-A, AS SUCH THIS REVISION IS TO RECLASSIFY THE REPAIR FROM MINOR TO MAJOR IAW MX-244 GUIDELINES. THE REF /3/ MX-244 HAS BEEN UPDATED TO REFLECT THE CLASSIFICATION AND THE TASKCARD AC24-1093-01 WILL BE UPDATED TO ENSURE STEPS ARE APPROPRIATELY REFLECTED AS RII. SUBSTANTIATION: THIS PERMANENT REPAIR IS APPROVED PER REF /1/, REO, WING FIXED LEADING EDGE SLAT SKIN IS CONSIDERED PRIMARY STRUCTURE AND IS CLASSIFIED AS MAJOR IAW REF /3/ MX-244 GUIDELINES. (E/C: AC24-1093-01)