TRUE/FALSE: Once an engine is shutdown by the DECU via the BIM, overspeed protection is automatically inhibited on the second engine.

TRUE/FALSE: Once an engine is shutdown by the DECU via the BIM, overspeed protection is automatically inhibited on the second engine.

• A. True
• B. False
• C. Only for one engine
• D. Depends on RPM

Answer: (A)

During a shutdown commanded by the DECU through the BIM, the system intentionally disables overspeed protection on the remaining engine. This avoids the surviving engine from reacting to transient signals or the abrupt change in load during the shutdown sequence, which could otherwise trigger an unnecessary protective shutdown of the second engine. The pilot can maintain control of the remaining engine while the shutdown of the first engine completes, and normal overspeed protection on the second engine is restored once the sequence is settled.

During a shutdown commanded by the DECU through the BIM, the system intentionally disables overspeed protection on the remaining engine. This avoids the surviving engine from reacting to transient signals or the abrupt change in load during the shutdown sequence, which could otherwise trigger an unnecessary protective shutdown of the second engine. The pilot can maintain control of the remaining engine while the shutdown of the first engine completes, and normal overspeed protection on the second engine is restored once the sequence is settled.