What was found
MDIS 954 34-14 5149 06NOV18 CHA LOGPAGES:2931156 ON TAKE OFF AT 30KTS GOT OVERSPEED CLACKER AND CAPT. AIRSPEED IND 450KTS. CLACKER REMAINED ON FOR OVER 1 MINUTE AFTER TAXI OFF RUNWAY. ON TAXI INTO GATE LOST ALL CAPT AIRSPEED AND ALTIMETER DATA. ALSO GOT AUTOTHROTTLE DISCONNECT AND TERRAIN OVERRIDE FAIL. TROUBLESHOT ADC BY SWAPPING ADC LEFT AND RIGHT THE PROBLEM DID NOT FOLLOW. I CHECKED WATER TRAPS THERE WAS NO WATER. I BITE TESTED BOTH ADC'S AND MCDP AND NO FAULTS DISPLAYED. R AND R LEFT ADC OPS CHECK GOOD AC OK FOR SERVICE