As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, LOST BOTH AIR CONDITIONING PACKS CLIMBING THROUGH 17,500 FEET. DESCENDED AND RESET BOTH SWITCHES AND PACKS OPERATED NORMALLY. SUBSEQUENT MAINTENANCE ACTION REPLACED #1 BLEED MONITOR COMPUTER DUE TO NR1 SYSTEM FAILURE. SYSTEM CHECKED SERVICEABLE.