As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE WARNING AT 70KTS. A/C RETURNED TO BLOCKS. ON POST FLIGHT INSPECTION FOUND NR 3 BOTTOM DOOR OPEN, & INBOARD PYLON DOOR OPEN. FOUND HP VALVE LOWER CLAMP OFF POSITION, ADJUSTED DUCTS AND REPLACED LOWER CLAMP AS PER MM 36-11-05. LEAK CHECK OK.