What was found
ON FLIGHT 4322 CREW REPORTED ON CLIMBOUT OBSERVED LEFT ENGINE OIL PRESS WITH RED INDICATION (8L); OIL TEMP INCREASING. FOLLOWED AOM PROCEDURE AND CONTINUED WITH ENGINE SHUTDOWN ON LEFT ENGINE. RETURNED TO CMH AND DECLARED AN EMERGENCY. LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED NUMBER ONE ENGINE. A SEPARATION OF THE STAGE 6 HPC BLEED HORN DUCT WAS CONFIRMED. THE HPC UPPER AND LOWER CASES WERE REMOVED AND DISASSEMBLED FOR EMBODIMENT OF SB 72-0220 INCORPORATING A BLEED HORN WITH IMPROVED MATERIAL AND REDUCED STRESSES IN THE REGION. THE AIRCRAFT WAS RETURNED TO SERVICE.