Instrument Rating Checkride Practice Test

When a pilot deviates from an IFR clearance, it is essential to obtain approval from Air Traffic Control (ATC) for the deviation. This requirement is in place to maintain safety and coordination within the airspace system. ATC needs to be aware of any changes or deviations, as they are responsible for ensuring that all aircraft operate safely and efficiently.

By notifying ATC of the deviation, the pilot allows the agency to adjust other traffic, provide necessary traffic advisories, and maintain an accurate picture of air traffic. This is crucial in busy airspace or when operating in close proximity to other aircraft. The clearance is a directive from ATC that ensures that all aircraft follow the same set of rules and maintains order in the airspace, thus ensuring safety for all.

In circumstances where an emergency necessitates a deviation, the pilot should still communicate the deviation to ATC as soon as possible, explaining the reason for the action taken. This communication helps ATC provide assistance if needed and keeps the broader air traffic system informed.