If the aircraft is in a holding pattern, what should always be monitored?

In a holding pattern, it is crucial to monitor the runway status lights because they provide essential information regarding the runway's availability and operational status. Since an aircraft in a holding pattern is waiting for clearance to approach or land, knowing the status of the runway helps the pilot prepare for a landing when clearance is granted.

The runway status lights indicate whether a runway is clear for landing or if there are restrictions in place, allowing the pilot to make informed decisions in a dynamic airspace environment. While monitoring weather conditions, fuel levels, and communications from Air Traffic Control (ATC) are also important, the prompt monitoring of runway status is critical for safe landing operations once the holding pattern concludes. Monitoring runway status directly affects the immediate actions of the flight when transitioning out of the holding pattern.