What was found
NR 1 LED FAILED TO RETRACT ON FLAP RETRACTION. REF 27-82-000-1 NR 1 SLAT HAS L/E JUMPER CABLE INSTALLED REF AMM 27-82-000-1 C/0473391. INSTALLED JUMPER ADAPTER ON NR 1 SLAT IAW MM 27-82-000-1. OPS CHECKED FLAP/SLAT SYSTEM PER MM 27-81-000-5 SYSTEM OPS. CHECKED GOOD. REMOVED NR 1 SLAT JUMPER. RE-INSTALLED ORIGINAL CONNECTOR PLUG ON NR 1 SLAT ACTUATOR CYLINDER WIRING. POWERED FLAPS UP AND LOWERED FLAPS, INDICATION NORMAL IAW MM27-81-000-5. OBSERVED FLAPS PHYSICALLY IN THEIR OPERATION, OPS NORMAL. REMOVED NR 1 SLAT ACTUATOR AND INSTALLED NEW ACTUATOR CHECKED ALL WIRING FOR NR 1 SLAT SWITCHES (S198,S308) TO LE CONTROL UNIT (M618). ALL WIRING CHECKED GOOD.