What was found
LE SLAT DISAGREE, RTFL. REF LOG 1 PER FIM. FSEU BITE FSEU1 SHOWED "NOT IN POSITION" AND "SLAT LOSS" MSGS. CHKD PIN 4 AT THE DATA PLUG CONNECTOR, FOUND OPEN. REPLACED FSEU 1 MR27856-99 OFF AND MR27856-216 ON PER MM. FSEU TEST PASSED PER MM. OPERATIONAL AND BITE TEST NORMAL. NO MSGS OR FAULTS. LEADING EDGE SLAT DISAGREE, CHECKED ROTARY ACTUATOR OVERLOAD INDICATORS PER MM. FOUND NR 8 ROTARY ACTUATOR (INBD) ON NR 4 SLAT TRIPPED. RMV'D NR 8 ROTARY ACTUATOR PER MM. RESOLVERS READINGS PER PG 404 (10) A ARE LEFT WING 349.72 RIGHT 349.80. COMPLETED INSTALLATION OF NR 4 SLAT INBOARD ROTARY ACTUATOR (NR 8 ACTUATOR) OPERATIONAL TEST NORMAL.