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Definition of Class E airspace

Remote Pilot (Part 107) practice question 5 of 21 on Airspace / Classification. ACS element UA.II.A.K1d · difficulty: recall. Want to answer it in a timed quiz? Use the Remote Pilot (Part 107) practice mode.

Question bank updated 2026-09-22

QUESTIONHow does the Remote Pilot Study Guide define Class E airspace?

  1. AControlled airspace not classified as Class A, B, C, or D
  2. BUncontrolled airspace that has not been designated as Class A, B, C, or D
  3. CAirspace above FL 600 and within federal airways only
Show the answer and explanation

Correct answer: A. Controlled airspace not classified as Class A, B, C, or D

  • A — correct The study guide defines Class E as the controlled airspace not classified as Class A, B, C, or D airspace.
  • B — incorrect Class E is controlled airspace; the airspace not designated as Class A through E is Class G, which is uncontrolled.
  • C — incorrect Airspace above FL 600 is Class E and federal airways are usually within Class E, but Class E is much broader and covers a large amount of the airspace over the United States.

BACKGROUND

Class E airspace is the controlled airspace that is not classified as Class A, B, C, or D. A large amount of the airspace over the United States is Class E, which provides sufficient airspace for the safe control and separation of aircraft during instrument flight rules (IFR) operations. Its base varies: in most areas it is 1,200 feet above ground level (AGL), and in many other areas it is the surface or 700 feet AGL. Class E typically extends up to, but not including, 18,000 feet MSL, and all airspace above FL 600 is Class E.

STUDY TIP

Think of Class E as the 'everything else' controlled airspace, and Class G as the 'everything else' uncontrolled airspace.

KEY POINTS

  • Class E is controlled airspace not classified as A, B, C, or D.
  • It covers a large amount of the airspace over the United States.
  • Its base is commonly 1,200 feet AGL, or the surface or 700 feet AGL in many areas.

SOURCES

  • remote_pilot_study_guide.txt Chapter 2 "Class E Airspace"
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MORE ON AIRSPACE / CLASSIFICATION

SkyDrill is not affiliated with the FAA. This is an original practice item based on 14 CFR part 107, 14 CFR part 89, and the FAA Remote Pilot – Small UAS Study Guide (FAA-G-8082-22). Regulations and handbooks are revised; confirm details against the current edition.