UA.II.A.K2

From the FAA library

• Remote Pilot - Small Unmanned Aircraft Systems Study Guidep. 6
  Chapter 2: Airspace Classification, Operating Requirements, and Flight Restrictions › Special Use Airspace

  Some Class E airspace begins at an MSL altitude depicted on the charts, instead of an AGL altitude. Class E airspace typically extends up to, but not including, 18,000 feet MSL (the lower limit of Class A airspace ... airspace above FL 600 is Class E airspace. Federal Airways, which are shown as blue lines on a sectional chart, are usually found within Class E airspace. Federal Airways start…

• Remote Pilot - Small Unmanned Aircraft Systems Study Guidep. 6
  Chapter 2: Airspace Classification, Operating Requirements, and Flight Restrictions › Class E Airspace

  Class D Airspace Class D airspace is generally airspace from the surface to 2,500 feet above the airport elevation (charted in MSL) surrounding those airports that have an operational control tower. The configuration of each Class D airspace area ... individually tailored and, when instrument procedures are published, the airspace is normally designed to contain the procedures. Arrival extensions for instrument approach procedures (IAPs) may be Class D or Class E airspace. A remote pilot must receive ATC authorization before…

• Pilot's Handbook of Aeronautical Knowledgep. 15-3
  Chapter 15: Airspace › Special Use Airspace

  Uncontrolled Airspace Class G Airspace Uncontrolled airspace or Class G airspace is the portion of the airspace that has not been designated as Class A, B, C, D, or E. It is therefore designated uncontrolled airspace. Class G airspace extends ... from the surface to the base of the overlying Class E airspace. Although ATC has no authority or responsibility to control air traffic, pilots should remember there are visual flight rules (VFR) minimums that apply to Class G airspace. Special…

• Aeronautical Information Manualp. 3-2-11
  Chapter 3. Airspace › Section 2. Controlled Airspace › 3-2-6. Class E Airspace

  Pilots should refer to the airport page in the applicable Chart Supplement for surface area status information. 2. Extension to a surface area. Class E airspace may be designated as extensions to Class B, Class C, Class D, and Class ... surface areas. Class E airspace extensions begin at the surface and extend up to the overlying controlled airspace. The extensions provide controlled airspace to contain standard instrument approach procedures without imposing a communications requirement on pilots operating under VFR. Surface…

• Aeronautical Information Manualp. 3-4-1
  Chapter 3. Airspace › Section 4. Special Use Airspace › 3-4-3. Restricted Areas

  Penetration of restricted areas without authorization from the using or controlling agency may be extremely hazardous to the aircraft and its occupants. Restricted areas are published in the Federal Register and constitute 14 CFR part 73. b. ATC facilities apply ... following procedures when aircraft are operating on an IFR clearance (including those cleared by ATC to maintain VFR-on-top) via a route which lies within joint-use restricted airspace. 1. If the restricted area is not active…

• Remote Pilot - Small Unmanned Aircraft Systems Study Guidep. 5
  Chapter 2: Airspace Classification, Operating Requirements, and Flight Restrictions › Class C Airspace

  Class B Airspace Class C Class D Class E Class B Airspace Class B airspace is generally airspace from the surface to 10,000 feet mean sea level (MSL) surrounding the nation’s busiest airports in terms of airport operations ... passenger enplanements. The configuration of each Class B airspace area is individually tailored, consists of a surface area and two or more layers (some Class B airspace areas resemble upside-down wedding cakes), and is designed to contain all published…