What was found
AFTER TAKE OFF, DUCT PRESSURES INDICATED 60 PSI LEFT SIDE, 10 PSI RIGHT SIDE. PRESSURIZATION WAS NORMAL. GROUNDED - YES. DIVERSION TIME 13 MINUTES. PERFORMING B737-800 FIM 36-10 TASK 811 FOUND #2 PRSOV LEAKING. REMOVED AND REPLACED #2 PRSOV REF B737-800 AMM 36-11-04. ACCOMPLISHED AIR CONDITIONING MODULE REPLACEMENT REF AMM 21-51-65. REPLACED BLEED AIR REGULATOR REF AMM 36-11-03. PERFORMED TC NG-36WC-0001 ENGINE BLEED AIR HEALTH CK, ALL GROUND VERIFICATION TESTS COMPLETE.