What was found
AT CRUISE FL370 45 MINUTES AFTER DEPARTURE, EICAS INDICATIONS SLAT MOVED INTERMITTENTLY BETWEEN 0* & 2*. CAS MSG, SLAT & FLAP MAINTENANCE. ON ARRIVAL FOR LANDING, SLATS & KRUEGERS DID NOT EXTEND. LANDING WAS PERFORMED WITH 20 DEGREES FLAPS IAW CHECKLIST. LANDING WAS UNEVENTFUL. MX REPAIRED CHAFED WIRES ON FLAP & SLAT ECU TO POWER DRIVE UNIT. SUCCESSFUL SYS OPERATIONS CHECK WAS PERFORMED. ACFT WAS RETURNED TO SERVICE.