What was found
DURING T/O ROLL, F/O AIRSPEED INDICATOR REMAINED AT ZERO. ON CLIMBOUT, IT BEHAVED AS AN ALTIMETER. RETURNED AND LANDED AT LAX. REMOVED AND REPLACED NR 2 CADC. FOUND FLEX LINE LOOSE ON FRONT OF NR 2 DIGITAL AIR DATA COMPUTER NR 2 CADC, OPS CK OK IAW MM 34-16-01-2-2. F/O PITOT/STATIC SYSTEM LEAK CK IAW MM 34-16-01-2-2.