What must Columbus-based aircraft monitor before, during, and immediately following engine start?

Monitoring ATIS (Automatic Terminal Information Service) is crucial for Columbus-based aircraft before, during, and immediately following engine start because ATIS provides essential information regarding current airport weather, runway usage, and other pertinent operational details. This service helps pilots stay informed about any updates related to flight safety, such as wind conditions, visibility, and other factors that can impact takeoff and landing.

Accessing this information ensures that crews are operating with the most accurate and up-to-date context before leaving the ground, as it allows for informed decision-making. For instance, if the ATIS indicates a specific runway is closed or that there are changing weather conditions, the crew can take necessary measures before starting the engine.

While other options like Ground Control instructions, Weather alerts, and Air Traffic Control frequencies are also important, ATIS is specifically broadcasted to provide a comprehensive overview of current operational conditions at the airport, making it an essential resource right before engine start.