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 SURGE INDICATION. PILOT REPORTED THAT HE FELT AND HEARD AUDIBLE STALL AND THE AIRCRAFT YAWED. NO EMERGENCY DECLARED AND LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND VBVS STUCK IN OPEN POSITION WITH DAMAGED DRIVE SHAFTS. NEW MASTER BLEED VALVE ACTUATOR INSTALLED. AIRCRAFT WAS GROUNDED.