As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM DUE TO DUCT PRESSURE LOW INDICATION IN THE RIGHT ENGINE, SHOWING 18 PSI. MAINTENANCE PERFORMED REVISION IAW 36-11-00, DETECTING A PNEUMATIC LEAK IN THE RIGHT ENGINE PRSOV. THE RIGHT ENGINE PRSOV AND THE RIGHT ENGINE BLEED AIR REGULATOR WERE REPLACED IAW AMM 36-11-04 AND AMM 36-12-03, TESTED CORRECT.