4/20/23 

AIM 

Section 3.  Class G Airspace 

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1.  General 

Class G airspace (uncontrolled) is that portion of airspace that has not been designated as Class A, Class B, Class 

C, Class D, or Class E airspace. 

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2.  VFR Requirements 

Rules governing VFR flight have been adopted to assist the pilot in meeting the responsibility to see and avoid 

other aircraft. Minimum flight visibility and distance from clouds required for VFR flight are contained in 

14 CFR Section 91.155. (See TBL 3

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1.) 

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3.  IFR Requirements 

a. 

Title 14 CFR specifies the pilot and aircraft equipment requirements for IFR flight. Pilots are reminded that 

in addition to altitude or flight level requirements, 14 CFR Section 91.177 includes a requirement to remain at 

least 1,000 feet (2,000 feet in designated mountainous terrain) above the highest obstacle within a horizontal 

distance of 4 nautical miles from the course to be flown. 

b. 

IFR Altitudes. (See TBL 3

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TBL 3

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IFR Altitudes 

Class G Airspace 

If your magnetic course 

(ground track) is: 

And you are below 18,000 feet MSL, fly: 

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 to 179

 

Odd thousands MSL, (3,000; 5,000; 7,000, etc.) 

180

 to 359

 

Even thousands MSL, (2,000; 4,000; 6,000, etc.) 

Class G Airspace 

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