What was found
AT 5000 FT, RECEIVED A NR 1 ENGINE FIRE INDICATION. RAN QRH AND SHUT DOWN THE NR 1 ENGINE. NO ABNORMAL ENGINE PARAMETERS OBSERVED. FIRED BOTH FIRE BOTTLES. CHECKED THE NR 1 ENGINE FIRE HANDLE ADJUSTMENT IAW MM 26-20-00-5, AND 76-20-01-2, ALL CHECKED GOOD. CHECKED THE NR 1 ENGINE FIRE EXINGHUSHING SYSTEM IAW MM 26-21-02-4, CHECKED GOOD. FIRE DETECTION SYSTEM FAULT COMPLIED WITH ON WRI 26-10/4773. AIRCRAFT OK FOR SERVICE.