What was found
ON CLIMBOUT BELOW 10,000 FT, NR 2 TORQUE AND ITT DROPPED SIMUTANEOUSLY TO LESS THAN 5 PERCENT OF PREVIOUS INDICATIONS THEN RETURNED TO WHERE THEY HAD BEEN. TORQUE BUG FOLLOWED TORQUE NEEDLE AS WELL. THIS TOOK ABOUT 1 SECOND. NO CHANGE IN NOISE LEVEL OR YAW NOTICED. EVENT MARKER PRESSED. INTERROGATED CD FAULTS CODES 900A + 454AB OF NR 2 ENGINE CLEAR FAULTS. RAN BOTH ENGINES + FAULTS CODES DID NOT REOCURR. REF AMM TASK 73.21-00-070-801 + AMM TASK 71-00-00-868-901, NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE.