What was found
ENGINES DO NOT ACCELERATE OR DECELERATE EVENLY CAUSING EXCESSIVE AUTO-THROTTLE HUNTING. RIGHT SIDE DECELERATE MUCH MORE QUICKLY THAN LEFT AND REQUIRES HALF KNOB SPLIT NEAR IDLE TO MATCH N1'S SUPPLEMENTAL DATA UPDATE THIS IS CAUSED BY EITHER A FAULTY TOTAL TEMPERATURE (TT2) SENSOR, OR THE FUEL CONTROL(FCU) DECELERATION(DECEL) SCHEDULE BEING TO CLOSE TO THE ENGINE'S STEADY STATE OPERATING LINE. THE FCU WILL CYCLE THE 3.0 AND 3.5 BLEEDS, TRYING TO KEEP UP WITH THE FCU DECEL SCHEDULE AND THE ENGINE OPERATING LINE, WHICH CAUSES POWER FLUCTUATIONS. THIS POWER FLUCTUATION IS CORRECTED BY EITHER REPLACING THE TT2 SNSOR OR ADJUSTING THE FCU DECEL SCHEDULE AWAY FROM THE STEADY STATE OPERATING LINE.