As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO LEFT ENGINE OVERHEAT IN CRUISE. THE 2.5 BLEED BELLCRANK (PN 1B7787) FRACTURE WAS THE PRIMARY CAUSE OF HIGH EGT. ECM DATA SHOWS HIGH EGT NR 1 ENG PEAKED OUT 648 DEG C.14TH STG BLEED CONVERTER VALVE STUCK OPEN. REPORTED EGT EXCEEDANCE LASTED LESS THAN 1 MINUTE. REPLACED 14TH STAGE BLEED VLV AND 14TH STAGE PILOT VALVE. PASSED 14TH STAGE BLEED SYSTEM AND 2.5 BLEED ACTUATOR TEST.