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NAPPF
Visibility & Cloud Clearance


Sec. 103.11 - Daylight operations.

(a) No person may operate an ultralight vehicle except between the hours of sunrise and sunset.

(b) Notwithstanding paragraph (a) of this section, ultralight vehicles may be operated during the twilight periods 30 minutes before official sunrise and 30 minutes after official sunset or, in Alaska, during the period of civil twilight as defined in the Air Almanac, if:

(1) The vehicle is equipped with an operating anticollision light visible for at least 3 statute miles; and

(2) All operations are conducted in uncontrolled airspace.

Sec. 103.21 Visual reference with the surface

No person may operate an ultralight vehicle except by visual reference with the surface.

Sec. 103.23 Flight visibility and cloud clearance requirements

No person may operate an ultralight vehicle when the flight visibility or distance from clouds is less than that in the table found below. All operations in Class A, Class B, Class C, and Class D airspace or Class E airspace designated as an airport must receive prior ATC authorization as required in 103.17 of this part.

Airspace Flight Visibility Distance from Clouds
Class A Not applicable Not applicable
Class B 3 Statute Miles Clear of Clouds
Class C 3 Statute Miles 500 feet below
1,000 feet above
2,000 feet horizontal
 
Class D 3 Statute Miles 500 feet below
1,000 feet above
2,000 feet horizontal
 
Class E    
Less than 10,000 feet MSL
3 statute miles
 
500 feet below
1,000 feet above
2,000 feet horizontal
At or Above 10,000 feet MSL
5 statute miles
 
1,000 feet below
1,000 feet above
1 statute mile horizontal
Class G    
1200 feet or less above the surface
(regardless of MSL altitude)
1 Statute Mile Clear of Clouds
More than 1200 feet above the surface,
but less than 10,000 feet MSL
1 Statute Mile 500 feet below
1,000 feet above
2,000 feet horizontal
 
More than 1200 feet above the surface
and at or above 10,000 feet MSL
5 Statute Miles 1,000 feet below
1,000 feet above
1 statute mile horizontal


Airspace Classification at a Glance


MSL - Mean Sea Level
AGL - Above Ground Level
FL- Flight Level
 

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Copyright 2001 North American Powered Parachute Federation
Last modified: 07/23/09