What was found
DURING CLIMBOUT WITH BOTH AC PACKS IN AUTO, LEFT BLEED DUCT READ 43PSI RT PACK 20 PSI. ACFT GROUNDED. PERFORMED NR 1 ENG & NR 2 ENG BLEED AIR HEALTH CHECK REF T/C NG-36WC-0001. FOUND NR 1 ENG PRSOV HAD INTERNAL LEAKAGE. REPLACED LT ENGINE PRSOV REF AMM 36-11-04 OPS AND LEAK CHECK GOOD. FOUND NR 2 ENG PCV FAILS TEST F CONTROL PRESSURE REGULATION. REPLACED NR 2 ENG PCV, OPS & LEAK CHECKED GOOD IAW AMM 36-12-02 ACCOMPLISHED STEP F ON TASK CARD NG-36WC-0001, PCV TESTS ALL PASSED. PERFORMED AMM TASK 36-11-00, ENG BLEED AIR CROSS OVER TEST & ALL PARAMETERS NORMAL.