What was found
AUS - FLT 9686 - DURING CHECK FLIGHT WHILE PASSING 15,000 AT 6 MINUTES INTO FLIGHT. TAIL COMPARTMENT HIGH TEMPERATURE LIGHT ILLUMINATED. ACCOMPLISHED EMERGENCY PROCEDURES, AND LIGHT EXTINGUISHED AFTER APPROXIMATELY 1 MINUTES. RETURNED AUS AND LANDED WITHOUT INCIDENT. REPLACED AIR DUCT, RAN PACKS, AND ACCOMPLISHED LEAK CHECK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)