FLC OF A B727 DECLARED AN EMER DUE TO A FIRE WARNING IN THE #1 ENG. MAINT FOUND A FAULTY FIRE DETECTION SYS.

Narrative

APPROX 10 MINS AFTER TKOF AND PRIOR TO THE TOP OF CLB; THE GLARE SHIELD MASTER FIRE WARNING LIGHTS AND FIRE BELL CAME ON. AFTER BELL CUTOUT WAS INITIATED; THE GLARE SHIELD LIGHT ALSO EXTINGUISHED AND NO SINGLE FIRE HANDLE LIGHT WAS ON; OR ANY SMOKE DETECTION DEVICE ACTIVATED. WITH THE ENG FIRE AND SEVERE DAMAGE CHKLIST IN HAND; WE ACCOMPLISHED A FIRE TEST AND FOUND THAT THE #1 ENG WOULD NOT TEST PROPERLY. WITH NORMAL ENG INDICATIONS AND NOT SURE OF THE CONDITION OF ENG #1; WE PULLED IT BACK TO FLT IDLE AND CONTINUED ON 2 ENGS TO THE NEAREST SUITABLE ARPT. AFTER THE CHKLISTS WERE ACCOMPLISHED WE WERE 1/2 WAY BTWN DFW AND AUS; AND DETERMINED THE AUS ARPT (DEST) WAS THE BEST PLACE TO PROCEED. WITH #1 ENG AT IDLE; IT COULD BE USED FOR SAFETY OF FLT; DUE TO THE LOW PROBABILITY OF FIRE OR DAMAGE. AFTER DECLARING AN EMER WITH ZHU; THE DSCNT AND APCH INTO AUS WERE UNEVENTFUL. UPON LNDG; WE CLRED THE RWY AND STOPPED THE ACFT; SET PARKING BRAKE; AND SHUT DOWN #1 ENG. THE AUS FIRE DEPT ACCOMPLISHED A VISUAL INSPECTION OF THE EXTERIOR OF ENGS #1; #2; AND #3; AND DETERMINED THAT IT APPEARED NO DAMAGE WAS PRESENT. WE PROCEEDED TO THE COMPANY RAMP; WHERE MAINT UNCOWLED THE #1 FOR FINAL INSPECTION. MAINT INITIALLY DETERMINED THAT THE FIRE LOOP FOR #1 WAS PROBABLY AT FAULT.