What was found
DURING APPROACH, LE SLAT ASSYM. EICAS MSG ILLUMINATED, ABORTED APPROACH. (AAP). A/C IS CURRENTLY IN WORK. WILL SEND AN UPDATED SDR REPORT WHEN WORK IS COMPLETE. AMENDED: FOUND #4 SLAT ASKEW, REMOVED AND REPLACED #4 OUTBD SLAT ROTART ACTUATOR AND OFFSET GEARBOX IAW AMM 27-81-20, REMOVED AND REPLACED #3 AND 4 TAI DUCTS AND INTERSTITIAL DUCT SECTIONS BETWEEN SLAT #3-4 AND SLATS #4-5 IAW AMM 30-11-06. OPERATED SLATS MANUALLY, ELECTRICALLY AND HYDRAULICALLY, REF AMM 27-81-00. OPS CHECKS GOOD, NO ASSYMETRY OBSERVED OR FAULT LIGHTS AND MESSAGES. AIRCRAFT RETURNED TO SERVICE.