As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUCT PRESSURE SPLIT EXCEEDS 20 PSI, LT SIDE 25 PSI, RT SIDE 47 PSI AT CRUISE FLIGHT F340. ACFT GROUNDED. ACCOMPLISHED T/C NG-36WC-00001. NR 1 ENG PCCV AND HSR FAILED THE SYS HEATH CHECK. REPLACED PCCV AND HSR REF AMM 36-12-02/401 AND AMM 36-11-07. OPS AND LEAK CK GOOD.