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Airport operationsQuestion 221 of 934

A pilot has been told to line up and wait. No takeoff clearance comes for some time. When should the pilot contact ATC?

  1. After 90 seconds without a takeoff clearance
  2. After 30 seconds without a takeoff clearance
  3. After 5 minutes without a takeoff clearance
  4. Only after the engine temperature rises
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Correct answer: After 90 seconds without a takeoff clearance

If a takeoff clearance does not come within 90 seconds, the pilot should contact ATC immediately.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 14: Airport Operations — ATC Instructions — "Line Up and Wait" (LUAW), page 369

Practice airport operations

Questions last reviewed: 18 October 2026