What was found
DUCT PRESS APPROX 35L-20R IN CLIMB. REMAINS SPLIT 20L-10R IN CRUISE 350 EPR 1.17. RAN BITE CHECK ON AIR SUPPLY BITE MODULE, FOUND FAULTS ON PRV AND PRV CONTROL. REPLACED PRV AND PRV CONTROL. OP CHECKS NORMAL
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DUCT PRESS APPROX 35L-20R IN CLIMB. REMAINS SPLIT 20L-10R IN CRUISE 350 EPR 1.17. RAN BITE CHECK ON AIR SUPPLY BITE MODULE, FOUND FAULTS ON PRV AND PRV CONTROL. REPLACED PRV AND PRV CONTROL. OP CHECKS NORMAL