DC9 HAS INFLT ENG FIRE. DECLARE EMER; SHUT DOWN ENG.

Narrative

ON DSCNT WITH ZOB INTO MSN. WE RECEIVED FIRE INDICATION MASTER WARNING. CAPT FLEW ACFT AND DECLARED EMER WHILE I PERFORMED THE ABNORMAL/EMER CHKLIST PROCS FOR FIRE INDICATION IN R (#2) ENG CAPT VERIFIED ALL PROC AND R ENG WAS SHUT DOWN AND BOTH FIRE BOTTLES WERE USED TO EXTINGUISH THE FIRE. UNEVENTFUL SINGLE ENG APCH AND LNDG (EMER) ACCOMPLISHED WITH FIRE LIGHT STILL ON. NORMAL CRASH AND COMPANY RESPONSE FOLLOWED AS ACFT STOPPED ON RWY 18. CRASH GND CREWS RPTED 'NO FIRE INDICATIONS ON R ENG.' APPROX 5 MIN LATER CRASH CREW RPTED 'FIRE ON R SIDE OF ACFT.' CAPT BEGAN 'EVACUATION OF ACFT' PROC AS SECOND RPT FROM CRASH CREW CAME SAYING 'DISREGARD; NO FIRE; NO FIRE!' CAPT STOPPED EVACUATION BEFORE ANY PAX EVACED; BUT CONFUSION WAS EVIDENT. WE RECONFIRMED 'NO FIRE' WITH GND CREW AND INFORMED PAX ALL WAS OKAY AND WE WOULD ATTEMPT TO DEPLANE AT THE GATE NORMALLY. THIS WAS NOT POSSIBLE BECAUSE THE BRAKES HAD LOCKED UP (R BRAKE) AND ACFT WOULD NOT MOVE. PAX DEPLANED NORMALLY THROUGH FRONT AIRSTAIRS AND WERE BUSED TO MSN TERMINAL. THIS EMER WAS NOT SERIOUS OR HAZARDOUS UNTIL GND CRASH CREWS INCORRECTLY RPTED 'FIRE.' MY CONCERN IS RESPONSE BY CRASH CREWS THAT DO NOT KNOW WHAT THEY ARE LOOKING FOR IN AN ENG FIRE EMER. UNNESSARY EVACUATIONS OFTEN ARE THE ONLY CAUSE OF INJURY!