As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT HIGH STAGE VALVE NOT OPENING. IN FLT, RT DUCT PRESSURE READS ABOUT 10 PSI LOW AND SUSPECTED HIGH STAGE SYS. AT ARRIVAL, IT APPEARED TO WORK OK. DUE HISTORY ON NR 2 ENG BLEED SYS. REPLACED NR 2 ENG HPSOV DUE TO FAILED HEALTH CHECK. ACCOMPLISHED PNEUMATIC HEALTH CHECK ON NR 2 ENG IAW MM. . HPSOV FAILED PNEUMATIC HEALTH CHECK DUE TO IT BINDING.