As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 280, HNL-KOA: PASSING THROUGH 8000 FT ON CLIMB-OUT, THE RT DUCT PRESSURE WAS OBSERVED AT ABOUT 40PSIG WITH THE ISOLATION VALVE CLOSED AND THE RT BLEED & RT PACK OFF. THE PRESSURE THEN DECREASED TO 14 PSIG, AND THEN DECREASED FURTHER WHEN POWER WAS REDUCED. RETURNED TO HNL. OPS AND LEAK CHECKED THE ISOLATION VALVE AND NR 2 ENGINE BLEED VALVE, CLEARED PRESSURE REGULATOR VENT HOLE. RAN ENGINES IAW AMM 71-00, OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.