Where should the nose door CAS reset procedure be performed?

• A. Inside cockpit
• B. Outside the aircraft
• C. In maintenance hangar
• D. In cabin

Answer: (B)

The main idea is that resetting the nose door CAS is an outside-the-aircraft operation for safety and proper verification. The nose door is an external, moving component, and performing a reset from outside allows you to stand clear of the door path, visually confirm its position, and ensure there is no risk of the door moving unexpectedly while the system is being reinitialized. Being outside also makes it possible to confirm that the reset has taken effect without occupants inside the cabin or cockpit being exposed to a door actuation or any system re-energization.

Doing this from inside the cockpit or cabin would limit visibility of the door’s status and could put people at risk if the door were to move, while performing it in a maintenance hangar isn’t appropriate for an on-flight or pre-flight reset, which needs to be validated in the field with the component accessible.