What should a pilot do upon noticing smoke in the flight deck during descent?

The most appropriate action a pilot should take upon noticing smoke in the flight deck during descent is to implement emergency procedures. This is crucial because smoke could indicate a serious issue that requires immediate attention, such as electrical failure, fire, or a potential cabin depressurization. Adhering to established emergency protocols ensures that the situation is handled efficiently and helps maintain safety for everyone on board.

When faced with smoke, pilots are trained to prioritize safety and follow specific steps that may include notifying air traffic control, checking for the source of the smoke, and taking necessary corrective actions. These emergency procedures are designed to allow pilots to manage the situation systematically, significantly reducing risks associated with in-flight emergencies.

While discussing the situation with the co-pilot can be necessary for coordinating actions, it should occur as part of following emergency protocols rather than being a standalone approach. Other options, such as ignoring the smoke or simply preparing for an emergency landing without first assessing the situation and executing emergency protocols, could lead to mismanagement of the situation and pose greater risk to safety.