What was found
MASTER CAUTION, ENGINE 1 COMPRESSOR VALVE DURING TAKEOFF, APROXIMATE AT 80 KNTS, IAW AMM 75-31-50-000-002A AND AMM 75-31-50-400-002A THE BLEED VALVE AND MASTER BALL SCREW ACTUATOR ASSY IN LT ENGINE WAS R & R, PERFORMED OPS TEST ON GROUND MINIMUM IDLE SATISFACTORY IAW AMM 71-00-00-710-006B AND TASK 73-29-00-710-740B.