AFTER LNDG; A MECH INFORMED FLC OF A WDB THAT HE FOUND DAMAGE TO ONE OF THE ACFT'S ELEVATORS. CREW SPECULATED THAT THE ONLY ABNORMAL FLT INCIDENT WAS DURING DSCNT WHEN THEY RESPONDED WITH AN ESCAPE MANEUVER TO A GPWS WARNING.

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I WAS THE FO ON A FLT FROM NRT TO MNL; DESIGNATED BY THE CAPT AS THE PF. AFTER BLOCK-IN; A MECH ENTERED THE COCKPIT AND ASKED IF WE HAD EXPERIENCED ANY CTL PROBS. ANSWERING NO; HE THEN INFORMED US WE HAD VISUAL DAMAGE TO THE OUTBOARD L ELEVATOR. THE ONLY ABNORMAL EVENT DURING THE FLT WAS A GPWS ALERT 'TERRAIN; TERRAIN' ABOUT 30 NM NE OF MIA (MANILA) VOR WHILE DSNDING THROUGH 8000 FT MSL. THE ALERT OCCURRED IMMEDIATELY AFTER ENTERING A SMALL AREA OF HVY RAIN. BOTH THE CAPT AND MYSELF STARTED THE ESCAPE MANEUVER; THEN REALIZING WE BOTH WERE MANIPULATING THE CTLS; I LET GO AND ANNOUNCED 'YOU HAVE THE ACFT.' A 'WINDSHEAR-WINDSHEAR' ALERT WAS HEARD. RECOVERING AT ABOUT 8000 FT MSL; THE AUTOPLT WAS RE-ENGAGED AND WE CONTINUED. AT 6 NM FINAL I DISCONNECTED THE AUTOPLT. DUE TO THE GPWS ESCAPE MANEUVER WE WERE HIGH AND REQUESTED A 360 DEG TURN. APCH CTL GAVE US VECTORS TO REINTERCEPT THE LOC. THE AUTOPLT WAS RE-ENGAGED. AGAIN AT ABOUT 6 NM FINAL; I DISCONNECTED THE AUTOPLT AND COMPLETED A NORMAL LNDG.