What action should you take if the pilot's readback does not match the clearance?

Boost your skills with the Controller Knowledge Test 2. Utilize flashcards and multiple choice questions to enhance your readiness. Each question offers insights and explanations to guide you. Prepare effectively for your exam!

Clearance integrity relies on the pilot’s readback matching exactly what was issued. When there’s a mismatch, the safety concern is not resolved until the discrepancy is corrected, because miscommunication can lead to an aircraft performing an unintended action—wrong altitude, route, or speed.

So the correct action is to compare the pilot’s readback with the clearance, identify any differences, and fix them before the aircraft executes the instruction. You would restate or clarify the exact clearance and require a correct readback, ensuring both sides have a shared, accurate understanding. Only after the readback matches should you proceed with execution.

In practice, if the pilot’s readback differs, you don’t proceed with the original clearance as read, you don’t adopt the readback with errors, and you don’t ignore the mismatch. Resolve it now to maintain precise, unambiguous coordination.