As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUCT PRESS SPLIT OF 22-24 PSI FOR UNDER 5 MINUTES. STABILIZED FOR REMAINDER OF FLIGHT BETWEEN 16-18 PSI DIFFERENTIAL. GROUNDED - YES. ACCOMPLISHED TASK CARD NG-36WC-00002-2. PCV FAILED HEALTH CHECK CK. R & R PCV PER AMM 36-12-02. OPS CK GOOD.