What was found
FLT 397 - HAD AN AIR TURN BACK TO TPA, ON CLIMB-OUT, ENGINE NR 2 FIRE INDICATION ILLUMINATED, RETARDED LEVER, LIGHT STAYED ILLUMINATED FOR A FEW SECONDS, DID INFLIGHT SHUTDOWN, RETURNED FOR LANDING. REPLACED NR 2 ENGINE 'Y' DUCTING FOR 13TH STAGE. (M)