As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NA*DIVERSION* *EMERGENCY DECLARED* IN CRUISE RECEIVED LEVEL 1 AIR SYS 1 OFF AND RED MANIFOLD FAIL. FOLLOWED BY LEVEL 1 AIR SYS 2 OFF.R/R OWNED DUCT ON #2 PACK (ITEM 370) IAW 21-53-01-01. SYS CL'S GOOD. COULDNT DUPLICATE ORIGINAL PILOT W/UPS. RETURNED ACFT TO SVS