Which of the following is NOT required before entering an ILS Critical Area?

The requirement of providing a project completion date is not typically necessary before entering an Instrument Landing System (ILS) Critical Area. Entry into this sensitive area is primarily concerned with maintaining safety and coordination with air traffic control and airport operations to ensure no disruption occurs with aircraft using the ILS system.

To safely operate within an ILS Critical Area, it is essential to advise Air Traffic Control (ATC) prior to entering. This communication ensures that controllers can manage aircraft operations effectively and prevent potential conflicts. Additionally, obtaining authorization from Airport Operations is vital as it ensures that the operations on the airside align with the airport's safety protocols and overall traffic management.

Providing a description of the work to be conducted is also necessary as it informs ATC and Airport Operations of the specific activities taking place, facilitating better coordination and safety measures. However, due to logistics and operational requirements, a project completion date does not play a role in the permission needed for entry into the ILS Critical Area itself. Thus, this option does not meet the requirements before entry, distinguishing it from the other necessary actions.