As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INITIAL CLIMB AFTER TAKEOFF, LEFT ENGINE EGT WENT TO 661 DEGREES. ENGINE DID NOT STABILIZE DURING CLIMB (AIR RETURN). REMOVED AND REPLACED 14TH STAGE BLEED CONVERTER VALVE PER AMM 75-32-03. PERFORMED ENG RUN PER AMM 71-00-00. OPS CHECK OK, ACFT RETURNED TO SERVICE.