As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENGINE ON CLIMB-OUT, ENGINE NACELLE FAULT LIGHT ON NR 3 ENGINE A LOOP READ 8.5- B LOOP READ 4.5. AS SOON AS THROTTLE PULLED BACK THE B LOOP TEMP DROPPED DOWN TO 3.0. NR 3 THROTTLE PULLED TO IDLE TO GET A LOOP TO DROP DOWN TO 3.0. ON GROUND AT IDLE NACELLE TEMPS READ 2.8, ENGINE BLOW OUT DOORS OPEN ON GROUND. NR 3 ENGINE PRESS CHECK FOR AIR LEAKS OK. REPLACED PRESSURE RELIEF VALVE AS PER BOEING MM 36-11-03. REPLACED PRESSURE REGULATING VALVE AS PER BOEING MM 36-11-19. ENGINE RUN AT HIGH POWER TO CHECK VALVES, RUN OK.