What was found
DIVERTED FLIGHT DUE TO PNEUMATIC PROBLEM. RT ENG HPSOV, LEFT PACK OFF. PERFORMED FIM 36-10FAULT TREE 833 AND CHANGED THE HPSOV IAW AMM 36-11-08/401, CHANGED THE PRESSURE CONTROLLER IAW AMM 36-11-19/401 AND CLEANED THE NR 2 ENGINE AIR FILTER HIGH PRESSURE CONTROLLER IAW AMM 36-11-08. PERFORMED A TEST RUN UP IAW AMM 71-00-00 ON GROUND. FOUND OK. PERFORMED FIM 21-51 FAULT TREE 803 PACK TEMPERATURE CONTROLLER BITE PROCEDURE AND CHANGED THE LT VALVE TEMP CONTROL IAW AMM 21-51-12/401. TESTED OK. (CP3017)