As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT HAD TO PERFORM AIR RETURN TO KSAT DUE TO LH ENGINE GOING IN TO BYPASS AND WAS STUCK OPEN HALFWAY THROUGH HIS FLIGHT. PILOT DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED P2/T2 SENSOR AND INSPECTED THE SECURITY AND ATTACHMENT OF THE SRL COMPUTER, AND THE SRL INTERFACE AND TEMP LIMITER. FOUND NO DISCREPANCIES WITH ANY OF THESE SYSTEMS. MAINTENANCE PERFORMED GROUND RUN CHECKS AND OPERATIONS WERE GOOD. COULD NOT DUPLICATE THE ISSUE AND AIRCRAFT WAS RETURNED TO SERVICE.