As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF RIGHT ENGINE, N2 AND OIL PRESS WARNINGS TURNED ON. DURING CHECK, THERE WERE DETECTED RECENT FAULTS IN CDU WITH LEGENDS EEC NR 2 SUPPLY AND 73-21282-FAIL CODE. ENGINE WAS RESTARTED, SHUTTING DOWN AUTOMATICALLY AT 21 PERCENT OF N2. BOTH EEC SWITCHES WERE PUTTED ON P5 ALTERNATE MODE AND ENGINES WERE STARTED NORMALLY. REPORT WAS DEFERRED IAW MM 73-11-1. DURING OVERNIGHT SERVICE, EEC WAS REPLACED IAW MM 73-21-60.