As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG BLEED AIR DUCT PRESSURE LOW (30 PSI AT ALL POWER SETTINGS). GROUNDED - YES. ACCOMPLISHED NR 1 ENG BLEED AIR SYS HEALTH CHECK REF ASA T/C NG-36WC-00001. FOUND NR 1 ENG BAR LEAKING, NO OTHER FAULTS FOUND. REMOVED & REPLACED NR 1 ENG BAR REF AMM 36-11-03. DURING PNEUMATIC SYSTEM LEAK CHECK FOUND NR 1 ENG PRSOV LEAKING FROM BUTTERFLY SHAFT. REMOVED & REPLACED NR 1 ENG PRSOV REF AMM 36-11-04. GROUND VERIFICATION SUCCESSFUL.