As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG DEGRADED, L ENG SURGE OPEN CAUTION, L ENG ITT EXCEEDED. CREW SENT ACARS TO DISPATCHER STATING THEY WERE RETURNING TO FIELD, DUE TO MX. CREW DID DECLARE AN EMERGENCY. CREW STATES THEY RECEIVED L ENGINE DEGRADED MESSAGE AND L ENGINE SURGE OPEN CAUTION MESSAGE. CREW ALSO STATE ITT LIMITS FOR L ENGINE EXCEEDED. REVIEWED QRH AND DID NOT SHUT DOWN ENGINE. REMOVED AND REPLACED LEFT ENGINE BLEED VALVE IAW AMM. OPS CHECK, LEAK CHECK, POBIT CHECKS GOOD AT THIS TIME.