What was found
LOST FLIGHT DIRECTORS AND AUTOPILOT/ATS PASSING 16000. F/O AIRSPEED 10 KNOTS LESS THAN CAPTAIN AND STANDBY A/S. ALSO RECEIVED, SELECT ELEVATOR FEEL MANUAL AND SELECT FLAP LIMIT OVER RIDE INDICATIONS. ENTERED A/S UNRELIABLE CHECKLIST. F/O SELECTED AUXILIARY ON EIS SOURCE, HOWEVER, F/O A/S REMAINED UNRELIABLE, DETERIORATED TO 35 KNOTS SLOW ON FINAL. ENCOUNTERED RIME ICING F18-230. WHILE INSPECTING CAPTAIN AND F/O'S ADC'S, PERFORMED BITE CHECK ON BOTH ADC'S, NO FAULTS FOUND REF AMM 34-16-01-5. CAPTAIN PITOT LINE QUICK DISCONNECT NOT LOCKED AND LINE POPPED OFF. RECONNECTED QUICK DISCONNECT AND FOUND THE QUICK DISCONNECT ON THE CAPTAIN`S ADC DOES NOT LOCK PROPERLY. OPENED CAPTAIN AND F/O'S PITOT LINES AND PURGED WITH NITROGEN, FOUND SIGNIFICANT AMOUNT OF WATER IN THE F/O'S PITOT LINE. ALSO FOUND THE DRAIN HOLES ON THE F/O'S PITOT TUBE PLUGGED, CLEANED SAME. RESECURED PITOT LINES. REF AMM 34-11-01-2. NOTE: QUICK DISCONNECT PROBLEM NOTED IN PREVIOUS ENTRY WAS FOR THE CONNECTION ON THE CAPTAIN'S ADC, BOX SIDE. R & R NR 1 AND NR 2 ADC'S REF MM 34-16-01-4. OPS AND EIS TESTS GOOD. PERFORMED LOW LEVEL CHECK OF CAPTAIN'S PITOT STATIC SYS REF MM 34-11-00-2, STEP 1C. CHECKS GOOD. PERFORMED F/O'S, HIGH LEVEL, PITOT STATIC SYS FUNCTIONAL CHECK REF MM 34-11-00-2, STEP 9. TEST WELL WITHIN LIMITS. OK FOR SERVICE.