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SESK: Stuff Everyone Should Know · sesk.info/ifr-class-b-clearance

When is an ATC clearance required before entering Class B airspace?

Always, regardless of weather.

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  1. Only in instrument conditions
  2. Regardless of weather conditions ✔
  3. Only below 3,000 feet

Why: The AIM says an ATC clearance is required before operating in Class B airspace regardless of weather. This applies to both VFR and IFR flights.

Huh, didn't know that: At a listed set of the busiest Class B airports, the pilot in command must hold at least a private pilot certificate to take off or land.

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When the beauty shop finally reopened, the crowd was so big they really needed a hair traffic controller.
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References

Answer: Regardless of weather conditions. The AIM says an ATC clearance is required before operating in Class B airspace regardless of weather. This applies to both VFR and IFR flights.

  1. AIM 3-2 Controlled Airspace www.faa.gov/air_traffic/publications/atpubs/aim_html/chap3_section_2.html
    Regardless of weather conditions, an ATC clearance is required prior to operating within Class B airspace.
    Checked 2026-10-10.
  2. 14 CFR 91.131 Operations in Class B airspace www.law.cornell.edu/cfr/text/14/91.131
    An operable VOR or TACAN receiver or an operable and suitable RNAV system
    Checked 2026-10-10.

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