What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: CLIMBING THROUGH 10K RIGHT PACK LIGHT CAME ON. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT DFW. PERFORMED MULTIPLE TROUBLESHOOTING OF LEFT HAND HEAT EXCHANGERS AND PLENUMS. PERFORMED CLEANING OF LEFT HAND HEAT EXCHANGERS. FOUND COMPRESSORE INLET DUCT ASSEMBLY AND PRIMARY HEAT EXCHANGER DUCT ASSEMBLY. DAMAGED. REMOVED AND REPLACED BOTH RIGHT (AALA202507141347) AND LEFT (AALA202507176778) DUCT ASSEMBLY. NO LEAKS DETECTED. RIGHT AND LEFT HAND PACK TEMPS PASSED.