What was found
AIRCRAFT GROUNDED - RIGHT ENGINE HAS SLOW ACCELERATION IN FORWARD THRUST. WITH BOTH THRUST LEVERS EQUAL IN POSITION, N1 40 PERCENT, TAKE-OFF/GO-AROUND SELECTED FOR TAKEOFF POWER, RIGHT ENGINE LAGGED LEFT ENGINE BY ABOUT 8 PERCENT INITIALLY, UNEQUAL THRUST. AT FLIGHT LEVEL 390, BOTH N1 SAME, L ENG EGT 654 L(FF) 2.42, R ENG EGT 703 R(FF) 2.55. **SUPPLEMENTAL REPORT: REMOVED AND REPLACED #2 TRANSIENT BLEED VALVE PER AMM 75-23-01, OPERATIONAL AND LEAK CHECKS GOOD.** (CLOSED)