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SESK: Stuff Everyone Should Know · sesk.info/pilot-class-b-clear-of-clouds

What is the VFR cloud clearance requirement inside Class B airspace?

Clear of clouds, with 3 statute miles visibility.

  1. 500 feet below clouds
  2. Clear of clouds ✔
  3. 1,000 feet above clouds

Why: Class B needs only 'clear of clouds' because every aircraft inside is under ATC control and separated. Flight visibility must still be at least 3 statute miles.

Huh, didn't know that: Class B surrounds the busiest airports, and the FAA describes its shape like an upside down wedding cake.

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Sources

  1. 14 CFR 91.155 Basic VFR weather minimums (eCFR) https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F/part-91/subpart-B/subject-group-ECFR4d7cd0e3cc4be86/section-91.155
  2. AIM 3-2 Controlled Airspace (Class B) https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap3_section_2.html

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