As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT DUCT PRESSURE FLUCTUATES DURING TAKEOFF OR CLIMB, WITH LT & RT ISOL VLVS CLOSED, & BLEED SW ON. DUCT PSI FLUCTUATES BETWEEN. CREW COMMENTS: FROM 1 TO 4 MIN AFTER T-O RT DUCT FLUCTUATED FROM 15-35 PSI. CREW STATES AT CLIMB RIGHT ENGINE DUCT PRESSURE NEEDLE FLUCTUATES, NO BLEED LIGHTS OR EICAS MESSAGES DISPLAYED. LOCKED CLOSED RIGHT ENGINE HIGH PRESSURE SHUTOFF VALVE AND PLACARD FD BLEED SWITCH. AIR SUPPLY BITE MODULE FAULTED HPSOV. REPLACED HPSOV. HI POWERED RUN PNEUMATIC CHECK TEST GOOD.