What was found
ON TAKE-OFF ROLL, PRIOR TO ROTATION, WE SAW AND HEARD ELECTRICAL FLASHES BEHIND CAPTAIN AND SCREENS FLICKERED, ALSO SMELLED ELECTRICAL SMOKE BRIEFLY. "AIRCRAFT REMOVED FROM SERVICE" INSPECTED AND FOUND RAZOR BLADE MAKING CONTACT WITH CBP1-A2 AND A5 (FOR HYD. PUMPS 3B AND 2B) AND EVIDENCE OF ARCING. REMOVED RAZOR BLADE. REMOVED CIRCUIT BREAKERS IAW ESPM 20-23-00 AND CLEANED WIRING, TERMINALS AND INTERIOR OF CIRCUIT BREAKER PANEL 1 IAW AMM 20-10-00. SEE 325730/1 FOR REPLACEMENT OF CIRCUIT BREAKERS AND OPS CHECKS OF HYD SYSTEM 2 AND 3. INSTALLED NEW CB'S ON CBP-1 A2 AND A5 IN REF TO ESPM 20-23-00 AND OPS CHECKED HYD SYSTEMS 2 AND 3 IN REF TO AMM 29-11-03. OPS CHECKS GOOD. AIRCRAFT OK FOR RETURN TO SERVICE.