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AIM

10/12/17

3−5−9

Other Airspace Areas

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)

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

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.

REFERENCE−

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)

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.

d. Charts. SFRAs are depicted on VFR sectional,

terminal area, and helicopter route charts. (See

FIG 3−5−4.)

FIG 3−5−4

SFRA Boundary

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.

3−5−8. Weather Reconnaissance Area

(WRA)

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