What was found
JUST AFTER ROTATION BOTH FLIGHT DIRECTORS FAILED EICAS CAUTION I AS DISAGREE AIRSPEED DISAGREE, CAPTAINS AIRSPEED ROLLED BACK, 30-50 KNOTS LOWER THAN F/O IDT INSPECTED PITOT QUICK DISCONNECTS. DUE TO CAPT AIRSPEED LOSS, T/S BY INVESTIGATING CAPT PITOT STATIC PROBE SYSTEM. FOUND SEVERE BLOCKAGE INSIDE THE PROBE. R&R CAPT PITOT STATIC PROBE REF AMM 34-11-01. ALL INSTALLATION TESTS PASS. ADD EMP:U383602 DUE TO HISTORY AND BECAUSE OF AIR RETURN, PERFORMED MANAGER. NO DEFECTS NOTED AT THIS TIME. PARTS USED: PRECAUTIONARY LEAK CHECK AND VERIFICATION OF AIRSPEED READING 40-0609-3-0233,QTY :1 00-0602-3-0013,QTY :1 64-3411-3-0001,QTY REF AMM 34-11-00-730-811. TEST PASSED, AIRSPEED INDICATIONS :1 64-3411-3-0003,QTY :1 00-0609-3-9664,QTY :1 READING CORRECTLY. VERIFIED CLEARANCE OF LOG PAGE WITH IAD SHIFT ADD EMP:U393762