As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4292 - DURING CRUISE FROM ATL-SAT, AT APPROXIMATELY 30,000 FEET, THE CREW RECEIVED A HYD HI TEMP NR 1 CAUTION MESSAGE. THE QRH WAS COMPLED WITH, AN EMERGENCY WAS DECLARED AND THE CREW SHUTDOWN THE LEFT ENGINE. THE AIRCRAFT DIVERTED TO IAH AND LANDED SAFELY. MAINTENANCE REMOVED AND REPLACED THE HYDRAULIC RESERVOIR AND HEAT EXCHANGER. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)