As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE VERY SLOW TO SPOOL AT TAKEOFF AND COULD NOT MAINTAIN MAX POWER DUE HIGH EGT. IN CRUISE EGT AVERAGED 46DEG HIGHER. DURING GROUND RUN OF NR 4 ENGINE, ALL INDICATIONS WERE NORMAL. NO DEFECTS NOTED AT TAKEOFF POWER OR OTHER ENGINE SETTINGS. OKAY FOR CONTINUED SERVICE.