What was found
MKE - AFTER DEPARTING JUST PRIOR TO FLAP RETRACTION, THE NR 1 FIRE WARNING CAME ON. FIREWARNING LIGHT WENT OUT AFTER NR 1 THROTTLE WAS RETARDED. AIRCRAFT RETURNED TO MKE AND MADE UNEVENTFUL LANDING. FOUND 8TH STAGE BLEED VALVE, AFT CLAMP UNSECURED. SECURED CLAMP AS REQUIRED. FIRE WARNING SYSTEM CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE WITH NO FURTHER DISCREPANCIES NOTED. (X)