As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 25,000 FT ENG'S AT IDLE, ENG ANTI-ICE ON, LOST CONTROL OF CABIN PRESSURIZATION. DURING EMERGENCY DECENT CABIN CLIMBED TO 12,000 FT. FOUND BOTH LEFT AND RIGHT HEAT EXCHANGERS LEAKING THROUGH CORE. REPLACED BOTH EXCHANGERS, LEAK AND PRESSURIZATION CHECKS GOOD.