Aviation English
Ground Ops

What is Stop sign?

Stop sign A clearly marked sign on the apron or taxiway instructing aircraft or vehicles to come to a complete stop and await further clearance.

Source: ICAO Doc 9432, FAA PCG

How is “Stop sign” Used in Practice?

Hold short of the stop sign at taxiway Alpha until instructed to proceed by ground control.

Certification Exam Relevance

ICAO Level 4ICAO Level 5ICAO Level 6EASA FCL.055

Who Needs to Know This Term?

  • Pilots
  • Air Traffic Controllers
  • Cabin Crew

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Frequently Asked Questions

What is Stop sign?

A clearly marked sign on the apron or taxiway instructing aircraft or vehicles to come to a complete stop and await further clearance.

Where can I learn this term for free?

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