What was found
ON DEPARTURE CAPTS AIRSPEED TAPE WAS SHOWING ERRONEOUS SPD IND. SWIT TO ALT SPD TAPE RETURNED TO OPERATION BUT SPD WAS 300 KTS WHEN F/O WAS 160 KTS. SWITCHED TO ALT EFIS NO CHANGE. AFTER FLAP/SLAT RETRACT NR 1 YAW DAMPER FAILED AUTO THROTTLE SYS FAILED WOULD NOT RESET. NR 1 AND NR 2 EPR FAIL TO INDICATE AND WE HAD NO WAY OF SETTING CLIMB PWR. FOUND NR 1 PITOT LINE CLOGGED. FLUSHED OUT BOTH 1 AND 2 PER M/M 34-10-00. REMOVED AND REPLACED NR 1 ADC PER M/M 34-11-34. PERFORMED PITOT/STATIC CK ON NR 1 AND NR 2 CKS GOOD. FLUSHED BOTH ENGS NR 1 AND NR 2 PT2 LINES. RAN ENG'S EPRS OPS CK GOOD. PERFORMED AFS/LAND TESTS OK.