When flying through a Class E extension during IFR conditions, what is required?

When flying through a Class E extension during IFR conditions, it is necessary to receive a special VFR clearance if you wish to operate under visual flight rules (VFR) within that airspace. Class E airspace has specific rules and requirements for IFR and VFR operations, but when weather conditions are not conducive to VFR—typically defined by visibility and cloud clearance criteria—pilots must adhere to IFR clearances to ensure safe operations.

In Class E airspace, which is generally used to transition between controlled and uncontrolled airspace, IFR clearance already implies that the pilot can operate without needing to meet VFR conditions. However, if a pilot wishes to fly VFR within that extension while in IFR, they would need to obtain a special VFR clearance from the appropriate air traffic control authority, ensuring that all safety protocols and regulations concerning VFR operations in controlled airspace are adhered to.

This requirement ensures that both the pilot and air traffic management are aware of the intended flight operations, balancing safety with the need for flexibility in flight routing.