What is required when entering an IFR airspace transition or T-routes in the Longitude 700?

• A. File IFR plan, obtain clearance, verify navigation data and altitude constraints; monitor position and compliance.
• B. Do not file IFR and operate VFR through the transition.
• C. Enter without clearance to save time.
• D. Only contact ATC after entering the transition.

Answer: (A)

When you’re going to use an IFR airspace transition or a T-route, you must operate under IFR with a proper clearance. This means you file an IFR flight plan and obtain ATC clearance before you enter that airspace. In addition, you need to verify that your navigation data (the FMS/ database you’re using for waypoints and routes) and any published altitude constraints are current and appropriate for the planned transition or route, so you can fly the intended path at the required altitudes. After clearance is received, you must continually monitor your position and ensure you remain compliant with the clearance and any ATC instructions.

This is why simply not filing IFR and flying VFR through the transition, entering without clearance, or waiting to contact ATC after you’ve entered would not meet the required procedures for IFR transitions or T-routes.