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###### Department of Transportation

###### Federal Aviation Administration

          - 14 CFR Part 71
          - Docket No. FAA-2012-0131; Airspace Docket No. 12-ANM-2

# AGENCY:

Federal Aviation Administration (FAA), DOT.

# ACTION:

Notice of proposed rulemaking (NPRM).

# SUMMARY:

This action proposes to amend Class E airspace at Rock Springs-Sweetwater County Airport, Rock Springs, WY. Decommissioning of the Rock Springs Tactical Air Navigation System (TACAN) has made this action necessary for the safety and management of Instrument Flight Rules (IFR) operations at the airport. This action also would adjust the geographic coordinates of the airport.

# DATES:

Comments must be received on or before April 13, 2012.

# ADDRESSES:

                        Send comments on this proposal to the U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590; telephone (202) 366-9826. You must identify FAA Docket No. FAA-2012-0131; Airspace Docket No. 12-ANM-2, at the beginning of your comments. You may also submit comments through the Internet at                         *http://www.regulations.gov.*

      ( print page 11797)    

# FOR FURTHER INFORMATION CONTACT:

Eldon Taylor, Federal Aviation Administration, Operations Support Group, Western Service Center, 1601 Lind Avenue SW., Renton, WA 98057; telephone (425) 203-4537.

# SUPPLEMENTARY INFORMATION:

## Comments Invited

Interested parties are invited to participate in this proposed rulemaking by submitting such written data, views, or arguments, as they may desire. Comments that provide the factual basis supporting the views and suggestions presented are particularly helpful in developing reasoned regulatory decisions on the proposal. Comments are specifically invited on the overall regulatory, aeronautical, economic, environmental, and energy-related aspects of the proposal.

                    Communications should identify both docket numbers (FAA Docket No. FAA 2012-0131 and Airspace Docket No. 12-ANM-2) and be submitted in triplicate to the Docket Management System (see                     **ADDRESSES**                     section for address and phone number). You may also submit comments through the Internet at                     *http://www.regulations.gov.*

Commenters wishing the FAA to acknowledge receipt of their comments on this action must submit with those comments a self-addressed stamped postcard on which the following statement is made: “Comments to FAA Docket No. FAA-2012-0131 and Airspace Docket No. 12-ANM-2”. The postcard will be date/time stamped and returned to the commenter.

All communications received on or before the specified closing date for comments will be considered before taking action on the proposed rule. The proposal contained in this action may be changed in light of comments received. All comments submitted will be available for examination in the public docket both before and after the closing date for comments. A report summarizing each substantive public contact with FAA personnel concerned with this rulemaking will be filed in the docket.

## Availability of NPRMs

                    An electronic copy of this document may be downloaded through the Internet at                     *http://www.regulations.gov.*                     Recently published rulemaking documents can also be accessed through the FAA's web page at                     *http://www.faa.gov/​airports_​airtraffic/​air_​traffic/​publications/​airspace_​amendments/​.*

                    You may review the public docket containing the proposal, any comments received, and any final disposition in person in the Dockets Office (see the                     **ADDRESSES**                     section for the address and phone number) between 9 a.m. and 5 p.m., Monday through Friday, except federal holidays. An informal docket may also be examined during normal business hours at the Northwest Mountain Regional Office of the Federal Aviation Administration, Air Traffic Organization, Western Service Center, Operations Support Group, 1601 Lind Avenue SW., Renton, WA 98057.                

Persons interested in being placed on a mailing list for future NPRMs should contact the FAA's Office of Rulemaking, (202) 267-9677, for a copy of Advisory Circular No. 11-2A, Notice of Proposed Rulemaking Distribution System, which describes the application procedure.

## The Proposal

The FAA is proposing an amendment to Title 14 Code of Federal Regulations (14 CFR) Part 71 by amending Class E surface airspace and Class E airspace extending upward from 700 feet above the surface at Rock Springs-Sweetwater County Airport, Rock Springs, WY. Airspace reconfiguration is necessary due to the decommissioning of the Rock Springs TACAN. Also, the geographic coordinates of the airport would be updated to coincide with the FAA's aeronautical database. This action would enhance the safety and management of IFR operations at Rock Springs-Sweetwater County Airport, Rock Springs, WY.

Class E airspace designations are published in paragraph 6002 and 6005, respectively, of FAA Order 7400.9V, dated August 9, 2011, and effective September 15, 2011, which is incorporated by reference in 14 CFR 71.1. The Class E airspace designation listed in this document will be published subsequently in this Order.

The FAA has determined this proposed regulation only involves an established body of technical regulations for which frequent and routine amendments are necessary to keep them operationally current. Therefore, this proposed regulation; (1) Is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT Regulatory Policies and Procedures (44 FR 11034; February 26, 1979); and (3) does not warrant preparation of a regulatory evaluation as the anticipated impact is so minimal. Since this is a routine matter that will only affect air traffic procedures and air navigation, it is certified this proposed rule, when promulgated, would not have a significant economic impact on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

The FAA's authority to issue rules regarding aviation safety is found in Title 49 of the U.S. Code. Subtitle 1, Section 106, describes the authority for the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency's authority. This rulemaking is promulgated under the authority described in Subtitle VII, Part A, Subpart I, Section 40103. Under that section, the FAA is charged with prescribing regulations to assign the use of the airspace necessary to ensure the safety of aircraft and the efficient use of airspace. This regulation is within the scope of that authority as it would modify controlled airspace at Rock Springs-Sweetwater County Airport, Rock Springs, WY.

This proposal will be subject to an environmental analysis in accordance with FAA Order 1050.1E. “Environmental Impacts: Policies and Procedures” prior to any FAA final regulatory action.

# List of Subjects in 14 CFR Part 71

      - Airspace
      - Incorporation by reference
      - Navigation (air)

## The Proposed Amendment

Accordingly, pursuant to the authority delegated to me, the Federal Aviation Administration proposes to amend 14 CFR part 71 as follows:

# PART 71—DESIGNATION OF CLASS A, B, C, D AND E AIRSPACE AREAS; AIR TRAFFIC SERVICE ROUTES; AND REPORTING POINTS

1. The authority citation for 14 CFR part 71 continues to read as follows:

Authority:49 U.S.C. 106(g), 40103, 40113, 40120; E.O. 10854, 24 FR 9565, 3 CFR, 1959-1963 Comp., p. 389.

§ 71.1 

2. The incorporation by reference in 14 CFR 71.1 of the Federal Aviation Administration Order 7400.9V, Airspace Designations and Reporting Points, dated August 9, 2011, and effective September 15, 2011 is amended as follows:

### Paragraph 6002 Class E airspace designated as surface areas.

* * * * *

## ANM WY E2 Rock Springs, WY [Modified]

Rock Springs-Sweetwater County Airport, WY

(Lat. 41°35′39″ N., long. 109°03′55″ W.)

                                Within 4.8 miles each side of the Rock Springs-Sweetwater County Airport 095° and 275° bearings extending from the airport to 13.5 miles west and 13.2 miles east.                                      ( print page 11798)    

### Paragraph 6005 Class E airspace areas extending upward from 700 feet or more above the surface of the earth.

* * * * *

## ANM WY E5 Rock Springs, WY [Modified]

Rock Springs-Sweetwater County Airport, WY

(Lat. 41°35′39″ N., long. 109°03′55″ W.)

Rock Springs VOR/DME

(Lat. 41°35′25″ N., long. 109°00′55″ W.)

That airspace extending upward from 700 feet above the surface within a 10.1-mile radius of the Rock Springs-Sweetwater County Airport, and within 8.5 miles north and 6.3 miles south of the Rock Springs-Sweetwater County Airport 269° and 089° bearings extending from the 10.1-mile radius to 23.4 miles west and 20.4 miles east of the airport, and within 2.2 miles north and 4.4 miles south of the Rock Springs-Sweetwater County Airport 109° bearing extending to 18.6 miles east of the airport; that airspace extending upward from 1,200 feet above the surface within a 20.1-mile radius of the Rock Springs VOR/DME, including that airspace bounded on the north by V-4 and V-6, on the southeast by V-208, and on the southwest by V-328.

Issued in Seattle, Washington, on February 22, 2012.

Bill Buck,

Acting Manager, Operations Support Group, Western Service Center

[FR Doc. 2012-4705 Filed 2-27-12; 8:45 am]

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