As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR MANIFOLD 2 FAIL. AFTER FLAP RETRACT ON TAKEOFF. MOVED THROTTLE TO IDLE IAW QRH. DUMPED FUEL AND RETURNED TO DEPARTURE. PERFORMED DECAY CK OF NR 2 PNEU SYS IAW MM 36-00-01-5 TIME WAS 25 SEC. FROM 20 TO 15 PSI. DECAY CK GOOD. THE MANIFOLD FAIL WAS ON STATICLY WITH NO AIR LOAD AND LOW DUCT TEMP. PERFORMED ADJUSTMENT TEST AND AND THE CONTROLLER FAILED. R & R NR 2 MANIFOLD FAIL CONTROLLER IAW MM 36-23-01-5. AWAITING TDR.