When reversing course to establish on the inbound course of the ILS RWY 9, what is the recommended action if radar vectoring to EXPAM?

When reversing course to establish on the inbound course of the ILS RWY 9 while under radar vectoring, the best action is to make an appropriate entry to the holding pattern at EXPAM INT. This option is correct because a holding pattern is designed to provide aircraft with a systematic way to delay their arrival, allowing for an organized flow of air traffic.

By entering the hold, the pilot can safely maintain altitude and manage their approach sequence, ensuring that they are correctly established on the inbound course before final descent. This approach allows for adjustments in timing and spacing, which is especially critical in busy air traffic environments or during instrument approaches where precision is essential.

Other choices would not effectively manage the situation: making a U-turn immediately could lead to disorganization in air traffic and might not align the aircraft correctly with the ILS. Proposing to proceed direct to the ILS bypasses necessary traffic and safety protocols. Lastly, descending to 3,000 feet may conflict with altitude restrictions or clearance from air traffic control, potentially jeopardizing safety. Therefore, the best and safest course of action is to enter the holding pattern as recommended.