What was found
INFLIGHT ENG NR 2 FIRE LIGHT ON MASTER SWITCH PANEL AND OVERHEAD PUSH BUTTON ILLUMINATED AND STAYED ON, EVEN AFTER SHUTDOWN. TROUBLESHOT SYSTEM TO NR 2 ENGINE 'B' LOOP. SWAPPED AND REPACKED THE 5LP AND THE 18LP CARD PER MM-33-14-33, SYSTEM TESTED NORMAL. ALSO, FOUND THE LP5 CARD NOT SECURED. ALL CARDS SECURED, SYSTEM TEST GOOD AT THIS TIME.