What was found
LEADING EDGE SLAT ASYMMETRY EICAS MSG & LE LIGHT ON. FLAPS STOPPED BETWEEN OPS 1 DEGREE. FLIGHT DECLARED AN EMER & RETURNED TO FIELD WITHOUT FURTHER INCIDENT. ACFT REMOVED FROM SERVICE. ACCOMPLISHED FIM 27-81-00-815-809, FAULT CODE 27-81021 NOTED. PSEU BITE FAULT CODE 5301 RT SLAT NR 1 NOTED. ACCOMPLISHED RESET ON FSEU & PSEU. NO FAULTS NOTED. OPERATIONAL CHECK OF LE SLAT SYS IAW AMM 27-81-00. OPERATIONAL CHECKED GOOD, NO FAULTS NOTED.