What was found
ATB-IFSD--DURING CLIMB-OUT AT FLT LEVEL 200; ENGINE 1 FIRE INDICATION AURAL WARNINGS SOUNDED. FIRE HANDLE RED LIGHT DID NOT ILLUMINATE. NO MASTER WARNING ANNUNCIATION. FIRE MSG ON EAD. ATB TO PHL - IFSD OF NR 1 ENGINE. REMOVED AND REPLACED NR 1 ENGINE FIRE LOOP WIRING IAW MM CH 20 STD PRACTICES. REF LT T/R ELEC HARNESS WIRES 148001 THRU 148004 - 16BL AND 16RD ACCOMPLISHED ALL FIRE DET TESTS IAW 26-11-02-5 CKS NORMAL.