As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPLICATION OF TAKEOFF POWER, AMBER EICAS MESSAGE 'HP DUCT 'O' PRESS R' CAME ON. ABORTED TAKEOFF. RIGHT HIGH PRESSURE REGULATING VALVE FAILED TO REGULATE PROPER BLEED AIR PRESSURE. REPLACED RIGHT HP BLEED AIR REGULATOR VALVE. OPERATION NORMAL. (M)