When the destination airport's airspace is controlled, pilots should:

Pilots should continue with standard IFR protocols when operating in controlled airspace at their destination airport. Controlled airspace is designed to manage aircraft traffic, ensuring safe separation and efficient movement. Under Instrument Flight Rules (IFR), pilots must adhere to specific operating procedures, including communication with air traffic control, following authorized flight plans, and maintaining altitude and route guidance provided by ATC.

Using standard IFR protocols is essential, particularly in controlled airspace, where the responsibilities of pilots and air traffic controllers are clearly defined to enhance safety. This means that pilots should maintain their flight profile as indicated by their IFR flight plan and communicate any changes in their status or intentions to air traffic control.

The other options suggest approaches that do not align with normal IFR operations in controlled airspace. Using visual flight rules is inappropriate in this context, as IFR protocols must be followed when navigating through controlled airspace. Similarly, seeking a special clearance is not required unless an unusual circumstance arises, and requesting an emergency landing would only be necessary in dire situations, such as mechanical failure or other emergencies.