As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YELLOW SYS HYD LOSS, RTFL. REPLACED HP FILTER ELEMENT. NO EVIDENCE OF DEBRIS. TROUBLESHOT OVERHEAT PROBLEM AND FOUND BAD CHECK VALVE 3083G. REMOVED DEFECTIVE CHECK VALVE. REPLACED AND PERFORMED HIGH POWER RUN FOR 25 MINS. REPLACED TEMP TRANSMITTER 3381GR DUE TO YELLOW SYSTEM OVERHEAT, OVERHEAT MSG DID NOT RE-APPEAR AND ALL INDICATIONS NORMAL. OK FOR RETURN TO SERVICE.