What was found
ON T/O ROLL CAPT AIRSPEED ERRATIC THEN BACK TO 30KTS AFTER LIFTOFF EICAS L & R EEC, AILERON LOCKOUT, RUDDER RATIO, AUTOTHROTTLES CLICKED OFF, F/O'S FLT DIR WENT OFF, CAPT RESET AND IT CAME BACK. CAPT'S AIRSPEED AND STBY AIRSPEED STAYED @ 30KTS. RTB. FOUND CAPTAIN'S PITOT-STATIC PROBE AND LEFT AUX PITOT-STATIC PROBE WITH OBSTRUCTIONS INSIDE. INSTALLED NEW CAPTAIN'S PITOT PROBE. INSTALLED THIRD NEW CAPTAIN'S PROBE. REF: AMM 34-11-01-4. OPS CHECK REQUIRED. CURRENTLY MSN FOR LEFT AUX PITOT-STATIC PROBE. PERFORMED OPS AND LEAK CHECK OF CAPTAIN'S PITOT-STATIC PROBE. OPS AND LEAK CHECK GOOD. REF: AMM 34-11-00-5. LEFT AUX PITOT-STATIC PROBE STILL NEEDS TO BE INSTALLED. TEST EQUIPMENT IS IN COCKPIT, IN CASE OF WEATHER. R/R'D #1 LEFT SIDE AUX PITOT/STATIC PROBE. SWAPPED OVER Q/D'S TO NEW PROBE AND SAFETIED, HOOKED UP 3 PITOT/STATIC LINES TO PROBE. HOOKED UP C/P FOR HEATER. REF MM 34-11-01-4. PITOT AND STATIC NEED LEAK CHECKS AND OPS CHECKS, ALSO HEATER NEED OPS CHECKS. COMPLIED WITH LEAK AND OPS CHECK OF LOWER LEFT AUX PITOT PROBE. REF: AMM 34-11-00-5. RESET PITOT HEAT BREAKERS. ALL SYSTEM OPS CHECKS NORMAL AT THIS TIME. INSTALLED SEALANT ON LOWER LEFT AUX PITOT PROBE. REF: AMMM 34-11-01-4. OK FOR SERVICE.