The AFFF reserve tanks are welded to the bulkhead in which hangars?

• A. Hangar Bays 1 and 3 (Welded to the Bulkhead)
• B. Flight Deck
• C. Hangar Bays 2 and 4 (Welded to the Bulkhead)
• D. Engine Room

Answer: (A)

The layout and durability of AFFF storage rely on secure mounting to a solid structure, so reserve tanks are often welded to a bulkhead to keep them stable and protected while keeping piping straightforward for rapid foam transfer. In this setup, the tanks are welded to the bulkhead in Hangar Bays 1 and 3, providing a fixed, reinforced mounting that minimizes movement or damage and optimizes access for maintenance and foam supply lines. The other locations—such as the flight deck or engine room—and the other hangar bays typically have different structural arrangements that don’t use bulkhead welding for the reserve tanks, making them unsuitable for this specific mounting.