AN MD88 FLC EXPERIENCES AN N1 OVERSPD ON BOTH ENGS WHILE ATTEMPTING TO STOP PRIOR TO RUNNING OFF THE END OF RWY 9L AT MLB. THE LONG RWY WAS CLOSED AND THE RWY 9L WAS JUST 6000 FT LONG. AUTOBRAKES SET FOR MEDIUM.

Narrative

LONG RWY AT MLB WAS CLOSED (RWY 9R/27L). THE CREW WAS CLRED FOR A VISUAL APCH TO RWY 9L; RWY LENGTH 6000 FT. CREW BRIEFED A VISUAL APCH FOR RWY 9L; AND SELECTED THE AUTOBRAKES TO MEDIUM. THE COPLT INTERCEPTED A VISUAL DSCNT AT ABOUT 5 MI FROM FIELD. AT APPROX 4 MI; CREW PICKED UP THE VASI AND WERE RED OVER WHITE AND ACFT WAS CONFIGURED FOR LNDG. AT ABOUT 3 MI; CAPT FELT THE ACFT WAS ON GS (VASI RED OVER WHITE) AND ON AIRSPD DURING THE ENTIRE APCH. ACFT TOUCHED DOWN APPROX 2000 FT FROM APCH END OF RWY; ON AIRSPD. CAPT CALLED 2 IN REVERSE AND 130 KIAS; BUT DID NOT FEEL ACFT WAS DECELERATING PROPERLY. CAPT CALLED FOR MORE BRAKES AND MORE REVERSERS. CAPT TOOK CTL OF ACFT AND APPLIED MAX BRAKES AND MAX REVERSE THRUST. CAPT NOTED L ENG EPR AT 2.02 AND THE L ENG N1 FLASHING. ACFT WAS STOPPED ON REMAINING RWY. FLT CTL WAS NOTIFIED AND CONTRACT MAINT SECURED TO INSPECT ENGS BECAUSE OF FLASHING N1. SUPPLEMENTAL INFO FROM ACN 404511: THE ACFT CAME TO A STOP ON THE RWY WITH N1 RPM FLASHING ON BOTH ENGS. MAINT WAS NOTIFIED AND BOTH ACFT ENGS WERE INSPECTED. THE ACFT WAS FERRIED BACK TO ATLANTA. FOR THIS SIT; IF MAX AUTOBRAKES HAD BEEN USED; MAX REVERSE THRUST MAY NOT HAVE BEEN NEEDED AND THE ENG LIMITS WOULD NOT HAVE BEEN EXCEEDED.