As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE 3 LOOP-A LIGHT ILLUMINATED IN-FLIGHT WITHOUT FIRE WARNING. FOLLOWED COM PROCEDURE AND LOOP-B TESTED SATISFACTORY. LOOP-A LIGHT WENT OUT WHILE PERFORMING COM PROCEDURE. CONTINUED FLIGHT USING LOOP-B DETECTION FOUND CHAFED WIRE BY PYLON DETECTORS. PROTECTED AND WRAPPED WIRING SYSTEM. OPS CHECKED NORMAL IN ACCORDANCE WITH MM 26-10-00.