Class B airspace rules14 CFR 91.131 Operations in Class B airspace
You need an ATC clearance before operating in Class B airspace. The pilot in command must hold at least a private pilot certificate or meet specific part 61 requirements for recreational, sport and student pilots, and the aircraft needs a two-way radio and the applicable transponder, altitude reporting and ADS-B Out equipment.
By the ATIS Alerts team · Updated October 15, 2026 · Regulation text current as of October 14, 2026. A study aid based on the official regulation text, not legal advice or an FAA interpretation.
At a glance
- An ATC clearance from the ATC facility having jurisdiction is required before operating in the area (a)(1), and 91.129 applies as well (a).
- Pilot in command: at least a private pilot certificate, or a recreational, sport or student pilot who has met the listed part 61 requirements (b)(1).
- At the airports listed in section 4 of appendix D to part 91, taking off or landing requires at least a private pilot certificate (b)(2).
- All operations: an operable two-way radio capable of communications with ATC on the appropriate frequencies (c)(2). IFR also needs an operable VOR or TACAN receiver or an operable and suitable RNAV system (c)(1).
- Transponder with automatic altitude reporting under 91.215(a), and after January 1, 2020, ADS-B Out under 91.225 (d).
In plain English
Section 91.131 is the operating rule for Class B airspace, the airspace around the busiest airports. Operations must comply with 91.129 and with this section, and the first requirement is the big one: the operator must receive an ATC clearance from the ATC facility having jurisdiction before operating in the area (a)(1). Large turbine engine-powered airplanes going to or from the primary airport stay at or above the Class B floors while within its lateral limits, unless ATC authorizes otherwise (a)(2), and pilot training at an airport inside Class B follows any procedures ATC has established (a)(3).
Paragraph (b) sets pilot requirements to take off or land at an airport within Class B or to operate a civil aircraft within it. A private pilot certificate or higher meets them. A recreational pilot must have met 61.101(d) or the student pilot requirements in 61.94, a sport pilot must have met 61.325 or 61.94, and a student pilot must have met 61.94 or 61.95, as applicable. At the airports listed in section 4 of appendix D, takeoffs and landings require at least a private pilot certificate, even for recreational, sport and student pilots who meet those requirements (b)(2).
Paragraphs (c) and (d) cover equipment. Every aircraft needs an operable two-way radio capable of communications with ATC on the appropriate frequencies for that Class B area, and an IFR flight also needs an operable VOR or TACAN receiver or an operable and suitable RNAV system (c), unless ATC authorizes otherwise. The aircraft also needs the applicable transponder and automatic altitude reporting equipment in 91.215(a), except as provided in 91.215(e), and after January 1, 2020, the applicable ADS-B Out equipment in 91.225 (d).
Common mistakes
- Entering on radio contact alone. Class B requires an ATC clearance (a)(1), unlike the communications requirement in Class C and Class D.
- Assuming a student pilot who has met 61.95 may land at every Class B airport. At the airports in section 4 of appendix D, takeoffs and landings require at least a private pilot certificate (b)(2).
- Forgetting the speed limit around Class B. Beneath Class B and in VFR corridors through it the limit is 200 knots indicated (91.117(c)).
The official text
14 CFR 91.131 as published on the eCFR, current as of October 14, 2026.
(a) Operating rules. 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) Pilot requirements. (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) Communications and navigation equipment requirements. Unless otherwise authorized by ATC, no person may operate an aircraft within a Class B airspace area unless that aircraft is equipped with—
(1) For IFR operation. An operable VOR or TACAN receiver or an operable and suitable RNAV system; and
(2) For all operations. An operable two-way radio capable of communications with ATC on appropriate frequencies for that Class B airspace area.
(d) Other equipment requirements. 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.
Test yourself
Practice questions from our free FAA written test prep that cite 14 CFR 91.131.
Private Pilot
What are the required entry conditions for Class B airspace?
- A. An ATC clearance specifically authorizing entry, a two-way radio, and a Mode C transponder.
- B. Two-way radio communication established with ATC and a Mode C transponder.
- C. A Mode C transponder and an operable ADS-B Out only.
- D. An instrument rating and an IFR flight plan.
Show answer
A. An ATC clearance specifically authorizing entry, a two-way radio, and a Mode C transponder. Class B is the one airspace a VFR pilot needs an explicit clearance to enter (ADS-B Out is also required under 91.225). You must hear the words "cleared into the Class Bravo." Being told to "remain outside Class B" or simply having your call sign acknowledged is not a clearance.
More Private Pilot practice →CFI Airplane
Entry into Class B airspace requires:
- A. a specific ATC clearance to enter, plus a two-way radio, a Mode C transponder, and ADS-B Out.
- B. two-way radio communication established with ATC.
- C. an operable transponder and ADS-B Out only.
- D. an instrument rating.
Show answer
A. a specific ATC clearance to enter, plus a two-way radio, a Mode C transponder, and ADS-B Out. Class B is the only class requiring an explicit clearance: the words "cleared into the Class Bravo". Teaching students that acknowledgement of their call sign is NOT a clearance prevents a common and serious violation.
More CFI Airplane practice →Private Helicopter
Before entering Class B airspace, the pilot must:
- A. receive an explicit ATC clearance into the Class B.
- B. establish two-way radio communications; no separate clearance is needed.
- C. file a VFR flight plan.
- D. obtain a clearance only if operating above 3,000 feet AGL.
Show answer
A. receive an explicit ATC clearance into the Class B. Class B is the one airspace where hearing your callsign is not enough: you need the words "cleared into the Class Bravo." Two-way communications alone is the Class C and D standard, which is exactly the confusion this question tests.
More Private Helicopter practice →
Questions pilots ask
Do I need a clearance to enter Class B airspace?
Yes. The operator must receive an ATC clearance from the ATC facility having jurisdiction before operating an aircraft in a Class B area (91.131(a)(1)).
Can a student pilot fly in Class B airspace?
A student pilot may operate there if the requirements of 61.94 or 61.95, as applicable, have been met (91.131(b)(1)(iv)). At the airports listed in section 4 of appendix D to part 91, taking off or landing requires at least a private pilot certificate (91.131(b)(2)).
What equipment is required in Class B airspace?
An operable two-way radio for all operations (91.131(c)(2)), an operable VOR or TACAN receiver or a suitable RNAV system for IFR (91.131(c)(1)), the applicable transponder and automatic altitude reporting equipment in 91.215(a) (91.131(d)(1)), and after January 1, 2020, the applicable ADS-B Out equipment in 91.225 (91.131(d)(2)).