8/15/19  AIM 3 − 5 − 6. Terminal Radar Service Area (TRSA) a. Background. TRSAs were originally estab- lished as part of the Terminal Radar Program at selected airports. TRSAs were never controlled airspace from a regulatory standpoint because the establishment of TRSAs was never subject to the rulemaking process; consequently, TRSAs are not contained in 14 CFR Part 71 nor are there any TRSA operating rules in 14 CFR Part 91. Part of the Airport Radar Service Area (ARSA) program was to eventually replace all TRSAs. However, the ARSA requirements became relatively stringent and it was subsequently decided that TRSAs would have to meet ARSA criteria before they would be converted. TRSAs do not fit into any of the U.S. airspace classes; therefore, they will continue to be non − Part 71 airspace areas where participating pilots can receive additional radar services which have been redefined as TRSA Service. b. TRSAs. The primary airport(s) within the TRSA become(s) Class D airspace. The remaining portion of the TRSA overlies other controlled airspace which is normally Class E airspace beginning at 700 or 1,200 feet and established to transition to/from the en route/terminal environment. c. Participation. Pilots operating under VFR are encouraged to contact the radar approach control and avail themselves of the TRSA Services. However, participation is voluntary on the part of the pilot. See Chapter 4, Air Traffic Control, for details and procedures. d. Charts. TRSAs are depicted on VFR sectional and terminal area charts with a solid black line and altitudes for each segment. The Class D portion is charted with a blue segmented line. 3 − 5 − 7. Special Air Traffic Rules (SATR) and Special Flight Rules Area (SFRA) 3 − 5 − 8. Weather Reconnaissance Area (WRA) a. Background.  The Code of Federal Regulations (CFR) prescribes special air traffic rules for aircraft operating within the boundaries of certain designated airspace. These areas are listed in 14 CFR Part 93 and can be found throughout the NAS. Procedures, nature of operations, configuration, size, and density of traffic vary among the identified areas. b. SFRAs.  Airspace of defined dimensions, above land areas or territorial waters, within which the flight of aircraft is subject to the rules set forth in 14 CFR a. General.  Hurricane Hunters from the United States Air Force Reserve 53$^{rd}$ Weather Reconnaissance Squadron (WRS) and the National Oceanic and Atmospheric Administration (NOAA) Aircraft Operations Center (AOC) operate weather reconnaissance/research aircraft missions, in support of the National Hurricane Operations Plan (NHOP), to gather meteorological data on hurricanes and tropical cyclones. 53$^{rd}$ WRS and NOAA AOC aircraft normally conduct these missions in airspace e. Additional information and resources regarding SFRA, including procedures for flight in individual areas, may be found on the FAA Safety website at www.faasafety.gov. FIG 3 − 5 − 4 SFRA Boundary d. Charts.  SFRAs are depicted on VFR sectional, terminal area, and helicopter route charts. (See FIG 3 − 5 − 4.) c. Participation.  Each person operating an aircraft to, from, or within airspace designated as a SATR area or SFRA must adhere to the special air traffic rules set forth in 14 CFR Part 93, as applicable, unless otherwise authorized or required by ATC. 14 CFR Part 93, Special Air Traffic Rules FAA Order JO 7110.65, Para 9 − 2 − 10, Special Air Traffic Rules (SATR) and Special Flight Rules Area (SFRA) PCG  −  Special Air Traffic Rules (SATR) REFERENCE − Part 93, unless otherwise authorized by air traffic control. Not all areas listed in 14 CFR Part 93 are designated SFRA, but special air traffic rules apply to all areas described in 14 CFR Part 93. 3 − 5 − 9 Other Airspace Areas