What is the role of the first officer during a rejected take-off on a 737-800?

The role of the first officer during a rejected take-off on a 737-800 is primarily to monitor the captain's actions and ensure that all necessary procedures are being followed. During a high-stress event like a rejected take-off, the first officer's responsibility includes keeping an eye on the aircraft's speed, performance parameters, and the captain's actions, providing essential support to the commander.

In addition, the first officer may help to identify any omissions in the captain’s actions, such as failing to announce decisions or actions that should be taken during this critical phase of flight. This dual monitoring helps ensure that all necessary steps are taken quickly and accurately to manage the situation and maintain safety.

This role does not typically encompass handling all communications with air traffic control, operating flight controls exclusively, or preparing the cabin for an emergency landing, as those actions usually fall under different responsibilities or involve more than one crew member. Thus, the selected role of monitoring and assisting the captain is vital for effective crew resource management and overall flight safety during a rejected take-off.