General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

How many flight control modes does the B-777 have?

1. 2 modes

2. 3 modes

3. 4 modes

4. 5 modes

The correct answer is: 3 modes

The Boeing 777 is equipped with three flight control modes, which are critical for its operation and performance. These modes include normal mode, alternate mode, and direct mode. 1. **Normal Mode**: This mode is the primary operating mode of the flight control system, allowing for full envelope protection and automated flight guidance. It facilitates smooth handling of the aircraft and provides various levels of autopilot assistance. 2. **Alternate Mode**: In situations where the normal mode fails or is not available, the flight control system switches to alternate mode. This mode still allows for controlled flight but with limited protections and functionalities compared to the normal mode. Pilots may need to manually manage more aspects of the flight. 3. **Direct Mode**: This mode allows for the most basic input directly from the control surfaces with minimum modulation by the flight control computers. It is used in specific scenarios, often following failures in the other modes, allowing the pilot to maintain some control over the aircraft. Understanding these modes is crucial for pilots to manage the aircraft effectively under different operational circumstances, ensuring safety and optimal performance.