What was found
ALT FL350 CABIN ALTITUDE LEVEL 3 ALERT. FASE 1S TO QRH. REF FIM 21-33-00-2 FIG 103 CHECKED BOTH CPC'S FOR BLOCKAGE AND NONE FOUND. CFDS FAULTS ACC1 WITH PK 1 RAD ACT IN LAST LEG BUT NO CURENT FAULTS. DEFERED PACK NR 1 RAM AIR ACTUATOR WRI 21-52-1583. PERFORMED RTS ON ACC1, ACC2, ACC3, ESC, CPC1, CPC2 WITH NO FAULTS NOTED. CPC2 WAS ACTIVE WHEN FAULT ACCURED. R/R NR 2 CPC AS PRECAUTION REF AMM 21-31-04-2. ALL TEST GOOD REF AMM 21-62-01-5 AND 21-08-01-5. A/C OK FOR SERVICE