Which computers provide backup control for the elevator and aileron movements?

Which computers provide backup control for the elevator and aileron movements?

• A. SECs
• B. SFCCs
• C. ECAM
• D. FADECs

Answer: (A)

The concept here is redundancy in the flight control system. In the A320, elevator and aileron movements are normally commanded by the primary flight control computers, but there is a dedicated backup path to keep control if those primary computers fail. The SECs provide this backup for the elevator and aileron surfaces, taking over control to maintain pitch and roll authority when needed. ECAM is just the cockpit monitoring and display system, FADECs handle engine thrust, and SFCCs relate to other control computer functions not serving as the elevator/aileron backup. So the SECs are the dedicated backup for those surfaces.

The concept here is redundancy in the flight control system. In the A320, elevator and aileron movements are normally commanded by the primary flight control computers, but there is a dedicated backup path to keep control if those primary computers fail. The SECs provide this backup for the elevator and aileron surfaces, taking over control to maintain pitch and roll authority when needed. ECAM is just the cockpit monitoring and display system, FADECs handle engine thrust, and SFCCs relate to other control computer functions not serving as the elevator/aileron backup. So the SECs are the dedicated backup for those surfaces.