What was found
LEFT DUCT PRESSURE CYCLING BETWEEN 40-10 PSI BELOW 10000 FEET ON CLIMB AND DESCENT. REMOVED AND REPLACED LEFT PRSOV IAW AMM 36-11-00. OPS CK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT DUCT PRESSURE CYCLING BETWEEN 40-10 PSI BELOW 10000 FEET ON CLIMB AND DESCENT. REMOVED AND REPLACED LEFT PRSOV IAW AMM 36-11-00. OPS CK NORMAL.