As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, HAD A NUMBER THREE STRUT OVERHEAT LIGHT COME ON AND LEFT PACK WAS UNABLE TO KEEP PRESSURE. DIVERTED AIRCRAFT TO IAH. TIGHTENED LOOSE DUCT CLAMPS IN THE NUMBER THREE STRUT. RAN UP NUMBER THREE ENGINE TO POWER WITH NO MORE LEAKS DETECTED. GROUND CHECKED LEFT PACK OK.