What was found
97-0134 AT T/O CREW FELT SLIGHT YAW AND OBSERVED NR 1 EPR DROP TO 1.4 ALL OTHER ENG IND REMAIN WITHIN LIMITS ALTHOUGH EGT WAS HIGHER THAN NORM. ENG WAS NEVER SHUTDOWN UNTIL SAFE LANDING WAS ACCOMP. SWAP NR 2 ENG PRESS BLEED CTRL AND BLEED CTRL VLV ON NR 1 ENG FOR T/S. DID NOT FIX PROB, RESTORED NR 2 ENG TO NORM CONFIG. NR 1 BLEED CTRL VLV NEEDS INSTALL AND BLEED CTRL VLV NEED SAFETY WIRED. RAN NR 1 ENG WITH NR 2 PTS AND ENG STALL. T/O EPR NOT REACH. CKD 13TH STAGE HI-PRESS LINE TO PRBC OK. REINSTALL PRBC AND SAFETIED ALL LINES. TURN P/D PRESS REG 1 TURN CLOCKWISE AND RESAFETIED. R/R'D ENG AS PER WC 70T0501 AND 70T0301 ON NR 1. REQ'D ITEMS INSPECT HAS BEEN C/W.