As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE, RT DUCT PRESSURE REGULATES TO 30 PSI MAX AT 70% N1 AND ABOVE TO T/O POWER. LT REGULATES TO 50 PSI WITH WQUAL N'S. GROUNDED - YES. T/C NG-36XC-00001 BLEED AIR SYSTEM HEALTH CHECK FOUND PRSOV AND 450 THERMOSTAT CONTROL PRESSURE OUT OF LIMITS. REMOVED AND REPLACED ENG 2 PRSOV AND THE 450 THERMOSTAT CONTRL PRESSURE IAW AMM 36-11-04 AND AMM 36-11-05.