What was found
MAIN CARGO FIRE EICAS ALERT ALONG WITH MASTER WARNING ALERTS ILLUMINATED AFTER TAKEOFF CLIMBING THROUGH 2,500 FT. ALERT LASTED APPROX 5 SECONDS. OVERHEAD MAIN CARGO FIRE DETECTION PANEL ILLUMINATED MID, AFT AND CARGO ISLATION LIGHTS. ALL ALERTS EXTINGUISHED AFTER 5 SECONDS. NO DG ABOARD AND APPROX 7000 LBS OF EMPTY CANS ABOARD. VISUALLY INSPECTED MAIN CARGO BAY. NO SMOKE OR FIRE INDICATIONS. PASSENGER OXYGEN SYS AUTO DEPLOYED. CHECKED EICAS FAULTS, NO FAULTS NOTED, PERFORMED FIRE AND CARGO SMOKE TEST OPS CHECKED NORMAL. RESET OXYGEN MASK IN FWD LAV VERIFIED OXYGEN QTY IN BOTH BOTTLES AND ALSO INSPECTED BLOW OUT DISK. OK FOR SERVICE IAW MM 5-11-00-6/26-23-00-5.