FAR 91.131 — Class B Airspace Operations
FAR 91.131 explains the ATC clearance, pilot certificate, and equipment requirements for flying in Class B airspace. Study guide for pilot students.
In Plain English
FAR 91.131 sets the rules for operating in Class B airspace—the busy airspace surrounding the nation's largest airports. Because of the heavy traffic mix, the FAA imposes strict entry, pilot, and equipment requirements.
Clearance and operating rules:
- You must receive an ATC clearance from the controlling facility before entering Class B airspace.
- Large turbine-powered airplanes must stay at or above the Class B floors when flying to/from the primary airport.
- Pilot training operations must follow any ATC-established procedures.
Pilot certificate requirements to take off, land, or operate within Class B:
- Private pilot certificate or higher, or
- Recreational or sport pilot who has met the additional training/endorsement requirements (§ 61.101(d), § 61.325, or § 61.94), or
- A student pilot with the proper endorsement under § 61.94 or § 61.95.
- At the busiest airports listed in Appendix D, Section 4, only private pilots or higher may take off or land—no student or sport pilot solo ops.
Equipment required:
- Operable VOR/TACAN receiver or suitable RNAV system
- Two-way radio capable of communicating with ATC
- Mode C transponder with altitude reporting
- ADS-B Out (since January 1, 2020)
Why it matters: a clearance readback like "cleared into the Class B" is your legal entry ticket—without it, you've busted airspace.
Regulation Text
14 CFR § 91.131§ 91.131 Operations in Class B airspace.
(a)No person may operate an aircraft within a Class B airspace area except in compliance with § 91.129 and the following rules:
(1) The operator must receive an ATC clearance from the ATC facility having jurisdiction for that area before operating an aircraft in that area.
(2) Unless otherwise authorized by ATC, each person operating a large turbine engine-powered airplane to or from a primary airport for which a Class B airspace area is designated must operate at or above the designated floors of the Class B airspace area while within the lateral limits of that area.
(3) Any person conducting pilot training operations at an airport within a Class B airspace area must comply with any procedures established by ATC for such operations in that area.
(b)(1) No person may take off or land a civil aircraft at an airport within a Class B airspace area or operate a civil aircraft within a Class B airspace area unless—
(i) The pilot in command holds at least a private pilot certificate;
(ii) The pilot in command holds a recreational pilot certificate and has met—
(A) The requirements of § 61.101(d) of this chapter; or
(B) The requirements for a student pilot seeking a recreational pilot certificate in § 61.94 of this chapter;
(iii) The pilot in command holds a sport pilot certificate and has met—
(A) The requirements of § 61.325 of this chapter; or
(B) The requirements for a student pilot seeking a recreational pilot certificate in § 61.94 of this chapter; or
(iv) The aircraft is operated by a student pilot who has met the requirements of § 61.94 or § 61.95 of this chapter, as applicable.
(2) Notwithstanding the provisions of paragraphs (b)(1)(ii), (b)(1)(iii) and (b)(1)(iv) of this section, no person may take off or land a civil aircraft at those airports listed in section 4 of appendix D to this part unless the pilot in command holds at least a private pilot certificate.
(c)Unless otherwise authorized by ATC, no person may operate an aircraft within a Class B airspace area unless that aircraft is equipped with—
(1)An operable VOR or TACAN receiver or an operable and suitable RNAV system; and
(2)An operable two-way radio capable of communications with ATC on appropriate frequencies for that Class B airspace area.
(d)No person may operate an aircraft in a Class B airspace area unless the aircraft is equipped with—
(1) The applicable operating transponder and automatic altitude reporting equipment specified in § 91.215 (a), except as provided in § 91.215 (e), and
(2) After January 1, 2020, the applicable Automatic Dependent Surveillance-Broadcast Out equipment specified in § 91.225.
[Docket 24458, 56 FR 65658, Dec. 17, 1991, as amended by Amdt. 91-282, 69 FR 44880, July 27, 2004; Amdt. 91-296, 72 FR 31678, June 7, 2007; Amdt. 91-314, 75 FR 30193, May 28, 2010]
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What is required before you may operate an aircraft within Class B airspace?
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Oral Exam Questions a DPE Might Ask
Q1What do you need before you can enter Class B airspace?
Per FAR 91.131, you must receive an explicit ATC clearance from the facility having jurisdiction before entering. Hearing your tail number alone isn't enough—you need the specific phrase 'cleared into the Class B.'
Q2What pilot certificate and equipment requirements apply to Class B operations?
FAR 91.131 generally requires at least a private pilot certificate (or a recreational/sport/student pilot with the proper endorsements per § 61.94, § 61.95, § 61.101(d), or § 61.325). The aircraft must have a VOR/TACAN or suitable RNAV, a two-way radio, a Mode C transponder with altitude reporting, and ADS-B Out.
Q3Can a student pilot solo into any Class B airport?
No. FAR 91.131(b)(2) prohibits student, sport, and recreational pilots from taking off or landing at the airports listed in Appendix D, Section 4 of Part 91—those require at least a private pilot certificate.
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