Part 71: Subpart C - Airspace Classification

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In this subpart:

71.101 Class A airspace

Any portion of airspace that is designated as a control area or control zone under rules 71.51(a) or (b) must be classified as Class A airspace if the Director considers it necessary in the interests of aviation safety that—

(1) separation is required between all flights; and

(2) VFR flights are not permitted.

71.103 Class B airspace

Any portion of airspace that is designated as a control area or control zone under rules 71.51(a) or (b) must be classified as Class B airspace if the Director considers it necessary in the interests of aviation safety that separation is required between all flights.

71.105 Class C airspace

Any portion of airspace that is designated as a control area or control zone under rules 71.51(a) or (b) must be classified as Class C airspace if the Director considers it necessary in the interests of aviation safety that—

(1) separation is required between—

(i) IFR flights; and

(ii) IFR and VFR flights; and

(iii) IFR and special VFR flights; and

(iv) special VFR flights when the flight visibility is reported to be less than 5 km; and

(2) traffic information must be provided to VFR flights about other VFR flights; and

(3) traffic avoidance advice must be provided to VFR flights on request.

71.107 Class D airspace

Any portion of airspace that is designated as a control area or control zone under rules 71.51(a) or (b) must be classified as Class D airspace if the Director considers it necessary in the interests of aviation safety that—

(1) separation is required between—

(i) IFR flights; and

(ii) IFR and special VFR flights; and

(iii) special VFR flights when the flight visibility is reported to be less than 5 km; and

(2) traffic information must be provided to—

(i) IFR flights about VFR flights; and

(ii) VFR flights about IFR flights; and

(iii) VFR flights about other VFR flights; and

(3) traffic avoidance advice must be provided to IFR and VFR flights on request.

71.109 Class E airspace

Any portion of airspace that is designated as a control area under rules 71.51(a) or (b) must be classified as Class E airspace if the Director considers it necessary in the interests of aviation safety that—

(1) separation is required between IFR flights; and

(2) traffic information must be provided, where practical, to—

(i) IFR flights about VFR flights; and

(ii) VFR flights about IFR flights; and

(iii) VFR flights about other VFR flights.

71.111 Class F airspace

The Director may classify any portion of uncontrolled airspace as Class F airspace if the Director considers it necessary in the interests of aviation safety that—

(1) IFR flights within the airspace need to receive an air traffic advisory service; and

(2) all flights within the airspace should receive a flight information service if requested.

71.113 Class G airspace

Class G airspace is any uncontrolled airspace that is not Class F airspace and—

(1) IFR flights are entitled to receive a flight information service; and

(2) VFR flights are entitled to receive a flight information service on request.

Subpart B

Subpart D