Skip to main content
Communications

Guard Frequency

Definition

The international emergency frequency 121.5 MHz that all ATC facilities and many aircraft monitor continuously. Used for distress calls, emergency communications, and intercepting lost aircraft.

Why Guard Frequency Matters for Pilots

Understanding Guard Frequency is important for pilot certification exams and safe flight operations. This concept appears on FAA and EASA knowledge tests, and examiners may ask about it during oral checkrides. A thorough understanding of Guard Frequency helps you make better decisions in the cockpit.

💡

Exam Tip

This concept is commonly tested in communications-related questions on FAA and EASA exams. Make sure you can explain Guard Frequency in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.

Related Terms

Share this with a fellow pilot

Related Content

Built by a commercial pilot

Pass your written for $39 — every track, 60 days

Guard Frequency is one of 5,500+ exam topics in the All-5 Bundle: PPL / IR / CPL / ATPL / Part 107 / TAE. One-time payment, no subscription. Free 30-day extension if you fail your real exam.

Get the $39 Bundle →

Test your knowledge

Think you understand Guard Frequency? Challenge yourself with practice questions covering communications and all other exam subjects.

Try Free Practice Questions

Or get the $39 All-5 Bundle (60 days)

More Communications Terms

Would you pass the real exam right now?

Take a free practice quiz — real FAA-style questions, instant score. No signup to start.

Take the free quiz →