Proposed Technical Standard Order (TSO)-C151c, Terrain Awareness and Warning System (TAWS), 5616-5617 [2012-2464]

Download as PDF 5616 Federal Register / Vol. 77, No. 23 / Friday, February 3, 2012 / Notices The meeting will be held March 6–8, 2012, from 9 a.m.–5 p.m. ADDRESSES: The meeting will be held at RTCA, Inc., 1150 18th Street NW., Suite 910, Washington, DC, 20036 FOR FURTHER INFORMATION CONTACT: The RTCA Secretariat, 1150 18th Street NW., Suite 910, Washington, DC, 20036, or by telephone at (202) 833–9339, fax at (202) 833–9434, or Web site at http://www.rtca.org. SUPPLEMENTARY INFORMATION: Pursuant to section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92– 463, 5 U.S.C., App.), notice is hereby given for a meeting of Special Committee 227. The agenda will include the following: DATES: March 6–8 tkelley on DSK3SPTVN1PROD with NOTICES • Welcome, Introductions, and Administrative Remarks • Agenda Overview • RTCA Overview • Background on RTCA, MASPS/ MOPS, and Process • Standards of Navigation Performance—Background/History • Review of SC 181 Products and Intended Applications • Walk through of DO–236B and DO– 283A • Review of Evolving NextGen Concepts Relating to Navigation Performance Leading to the Need To Update Standards • Committee Scope and Terms of Reference Overview • Organization of Work, Assign Tasks, and Workgroups • Review of Work Plan and Schedule • Breakout Discussions as Appropriate • Assignment of Responsibilities • Any Other Business • Establish Agenda for Next Meeting • Date and Place of Next Meeting • Adjourn Attendance is open to the interested public but limited to space availability. With the approval of the chairman, members of the public may present oral statements at the meeting. Persons wishing to present statements or obtain information should contact the person listed in the FOR FURTHER INFORMATION CONTACT section. Members of the public may present a written statement to the committee at any time. Issued in Washington, DC, on January 30, 2012. John Raper, Manager, Business Operations Branch, Federal Aviation Administration. [FR Doc. 2012–2487 Filed 2–2–12; 8:45 am] BILLING CODE 4910–13–P VerDate Mar<15>2010 20:48 Feb 02, 2012 Jkt 226001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Proposed Technical Standard Order (TSO)–C151c, Terrain Awareness and Warning System (TAWS) Notice of availability and request for public comment. ACTION: This notice announces the availability of, and request for public comments on a second draft of Technical Standard Order (TSO)–C151c, Terrain Awareness and Warning System. Comments received from the initial June 2011 release, resulted in changes to the proposed document significant enough to require this public comment offering. DATES: Comments must be received on or before March 5, 2012. ADDRESSES: Send all comments on the proposed technical standard order to: Federal Aviation Administration (FAA), Aircraft Certification Service, Aircraft Engineering Division, Avionics Systems Branch (AIR–130), 470 L’Enfant Plaza, Suite 4102, Washington, DC 20024. Attn. Ms. Charisse Green. Or you may hand deliver comments to 470 L’Enfant Plaza, Suite 4102, Washington, DC 20024. FOR FURTHER INFORMATION CONTACT: Ms. Charisse Green, AIR–130, Federal Aviation Administration, 470 L’Enfant Plaza, Suite 4102, Washington, DC 20024. Telephone (202) 385–4637, fax (202) 385–4651, email to: Charisse.Green@faa.gov. SUPPLEMENTARY INFORMATION: SUMMARY: Comments Invited You are invited to comment on the proposed revised TSO by submitting written data, views, or arguments to the above address. Comments received may be examined, both before and after the closing date at the above address, weekdays except federal holidays, between 8:30 a.m. and 4:30 p.m. The Director, Aircraft Certification Service, will consider all comments received on or before the closing date. Background The initial public offering of the draft TSO–C151c offered the following changes: a. Clarification of the 500 foot altitude call out requirement for Class A TAWS equipment. b. Addition of Localizer Performance with Vertical guidance (LPV) and Global Navigation Satellite System (GNSS) Landing System (GLS) glidepath alerting to the Ground Proximity Warning System (GPWS) Mode 5 glideslope alert. PO 00000 Frm 00137 Fmt 4703 Sfmt 4703 c. Elimination of the provision to adjust or modify the GPWS envelopes to minimize nuisance alerts based on Forward-Looking Terrain Avoidance (FLTA) and Premature Descent Alert (PDA) functionality without a deviation. d. Allowances for eliminating GPWS nuisance alerts (Appendix 1, paragraph 3.4). e. Requirement for the primary horizontal position source to be GPS, to ensure utilization of the most accurate and consistent horizontal position data. f. Addition of velocity and vertical GPS reporting requirement to inhibit alerting when GPS position is invalid, unless a backup position source is in use. The FAA received numerous comments on: (1) The 500 foot altitude call out; (2) the elimination of the GPWS envelope modification allowance; (3) the GPS horizontal position source requirement; and (4) the position source requirements. A summary of those public comments and the FAA’s resolution are included with the second draft of TSO–C151c. This announcement requesting comments to the revised proposed TSO– C151c, contains the following significant changes: a. Alert suppression for Required Navigation Performance (RNP) requirements are added to Appendix 1, Paragraph 3.1.4. b. The allowance in TSO–C151b to adjust or modify the GPWS alerting thresholds is restored in the current version of TSO–C151c. (We provide clarifying language that deviations need to be accomplished in accordance with Title 14 of the Code of Federal Regulations (14 CFR) 21.618.) c. The requirement in the initial proposal of TSO–C151c, requiring the Class A 500 ft voice call out on all approaches is changed to the TSO– C151b requirement, for the Class A 500 ft voice call out on non-precision approaches only. d. TSO–C151b and the first offering of the proposed TSO–C151c, both allowed for the 500 ft callout to be made based on radar altimeter height above terrain, or by a comparison of current altitude (barometric or GNSS) above the runway threshold height. This revised proposed TSO–C151c allows the 500 ft voice call out to be the current altitude (barometric or GNSS) above the runway threshold height. Note that in the current proposal, the allowance to make the voice callout based solely on a radio altimeter height above terrain is removed. The rationale is that all TAWS equipped aircraft will annunciate the altitude call referenced to the runway E:\FR\FM\03FEN1.SGM 03FEN1 Federal Register / Vol. 77, No. 23 / Friday, February 3, 2012 / Notices business hours are Monday through Friday, 7:30 a.m. to 4:30 p.m. MST. SUPPLEMENTARY INFORMATION: Notice is hereby given that the FHWA and other Federal agencies have taken final agency actions by issuing licenses, permits and approvals for the following highway project in the State of Utah: The Logan 200 East Minor Arterial Project, Cash How To Obtain Copies County, Utah, project number HPP– A copy of the proposed TSO–C151c LC05(29), Federal Lead Agency: Federal may be obtained via the information Highway Administration. contained in the section titled FOR Project Description: The Selected FURTHER INFORMATION CONTACT, or from Alternative (Build Alternative 2A) the FAA Internet Web site at: http:// implements a transportation project www.faa.gov/aircraft/draft_docs/. consisting of: (1) A new signalized intersection, including one through Issued in Washington, DC, on January 31, travel lane for all approaching 2012. directions, center turn lanes, right turn Susan J. M. Cabler, lanes, and designated pedestrian Assistant Manager, Aircraft Engineering crosswalks; (2) the installation of two Division, Aircraft Certification Service. pedestrian under crossings locations; (3) [FR Doc. 2012–2464 Filed 2–2–12; 8:45 am] construction of a roadway, with a slope BILLING CODE 4910–13–P to accommodate a change in elevation between Center Street and 100 South, DEPARTMENT OF TRANSPORTATION and retaining walls to retain roadway fills; (4) termination of Pioneer Avenue in a cul-de-sac and access for all Federal Highway Administration existing uses would be maintained; (5) Notice of Final Federal Agency Action road resurfacing, restriping to establish on Proposed Highway in Utah uniform roadway cross-section throughout the corridor, reconstruction AGENCY: Federal Highway of curb and gutter, and installation of Administration (FHWA), DOT. storm drainage facilities as needed to ACTION: Notice of Limitations on Claims convey drainage; (6) reconstruction of for Judicial Review of Actions by FHWA the intersection of 200 south and 200 and other Federal Agencies. east and widening the southern leg to match the northern roadway width and SUMMARY: This notice announces actions reconfiguration of intersection controls; taken by the FHWA and other Federal (7) widening, with an 11-foot center agencies that are final within the turn lane, two 11-foot travel lanes, two meaning of 23 U.S.C. 139(I)(1). The 11- foot parking/bike lanes, 2.5-foot curb actions relate to a proposed and gutter, 8-foot park strips, 5-foot transportation improvement project sidewalks, and 1-foot buffers behind (Logan 200 East, minor arterial project) sidewalks; and (8) construction of in Logan, Cache County in the State of intersection improvements, including Utah. These actions grant licenses, left-turn lanes for both east/westbound permits, and approvals for the project. travel on 200 East, and a right-turn lane DATES: By this notice, the FHWA is westbound. advising the public of final agency The actions by the FHWA and other actions subject to 23 U.S.C. 139(I)(1). A Federal agencies, and the laws under claim seeking judicial review of the which such actions were taken, are FHWA actions on the highway project described in the Environmental will be barred unless the claim is filed Assessment (EA) for the project, on or before August 1, 2012. If the approved on January 13, 2011, in the Federal law that authorizes judicial FHWA Finding of No Significant Impact review of a claim provides a time period (FONSI) issued on January 12, 2012, and of less than 180 days for filling such in other documents in the FHWA claim, then that shorter time period still administrative record. The EA, FONSI, applies. and other documents in the FHWA administrative record are available by FOR FURTHER INFORMATION CONTACT: For contacting the FHWA at the address FHWA: Mr. Edward Woolford, provided above. Environmental Program Manager, This notice applies to all Federal Federal Highway Administration, 2520 agency decisions as of the issuance date West 4700 South, Suite 9A, Salt Lake of this notice and all laws under which City, Utah 84129; telephone (801) 955– 3524; email: Edward.Woolford@dot.gov. such actions were taken, including but not limited to: The FHWA Utah Division’s regular tkelley on DSK3SPTVN1PROD with NOTICES threshold height, allowing for consistency in the altitude call out. e. Clarification of TAWS position requirements (See Proposed Paragraphs 5.0 through 5.6). f. All GPS requirements are unchanged from the TSO–C151b requirement. VerDate Mar<15>2010 20:48 Feb 02, 2012 Jkt 226001 PO 00000 Frm 00138 Fmt 4703 Sfmt 4703 5617 1. General: National Environmental Policy Act (NEPA) [49 U.S.C. 4321– 4351]; Federal-Aid Highway Act [23 U.S.C. 109 and 23 U.S.C. 128]; 2. Air: Clean Air Act [42 U.S.C. 7401– 7671(q)]; 3. Land: Section 4(f) of the Department of Transportation Act of 1966 [49 U.S.C. 303]; 4. Wildlife: Endangered Species Act [16 U.S.C 1531–1544 and Section 1536]; Migratory Bird Treaty Act [16 U.S.C. 703–712]; 5. Historic and Cultural Resources: Section 106 of the National Historic Preservation Act of 1966, as amended [16 U.S.C.470 (f) et seq.]; 6. Social and Economic: Civil Rights Act of 1964 [42 U.S.C. 2000(d)– 2000(d)(1); Farmland Protection Policy Act (FPPA) [7 U.S.C. 4201–4209]; 7. Wetlands and Water Resources: Safe Drinking Water Act [42 U.S.C. 300f et seq.]; TEA–21 Wetlands Mitigation [23 U.S.C. 103(b)(6)(m), 133(b)(11); Flood disaster Protection Act [42 U.S.C. 4001–129]. 8. Executive Orders: E.O. 11990, Protection of Wetlands; E.O. 11988, Floodplain Management; E.O. 12898, Federal Actions to address Environmental Justice in Minority Populations and Low Income Populations; E.O. 13175, Consultation and Coordination with Indian and Tribal Governments; E.O. 13112, Invasive Species. Nothing in this notice creates a cause of action under these Executive Orders. (Catalog of Federal Domestic Assistance Program Number 20.205, Highway Planning and Construction. The regulations implementing Executive Order 12372 regarding intergovernmental consultation on Federal programs and activities apply to this program.) Authority: 23 U.S.C. 139(I)(1) Issued on: January 23, 2012. James C. Christian, Division Administrator, Salt Lake City. [FR Doc. 2012–2428 Filed 2–2–12; 8:45 am] BILLING CODE 4910–RY–P DEPARTMENT OF TRANSPORTATION Federal Transit Administration Alternative Transportation in Parks and Public Lands Program Federal Transit Administration (FTA), DOT. ACTION: Paul S. Sarbanes Transit in Parks Program Announcement of FY 2011 and Partial 2012 Project Selections. AGENCY: E:\FR\FM\03FEN1.SGM 03FEN1

Agencies

[Federal Register Volume 77, Number 23 (Friday, February 3, 2012)]
[Notices]
[Pages 5616-5617]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-2464]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Proposed Technical Standard Order (TSO)-C151c, Terrain Awareness 
and Warning System (TAWS)

ACTION: Notice of availability and request for public comment.

-----------------------------------------------------------------------

SUMMARY: This notice announces the availability of, and request for 
public comments on a second draft of Technical Standard Order (TSO)-
C151c, Terrain Awareness and Warning System. Comments received from the 
initial June 2011 release, resulted in changes to the proposed document 
significant enough to require this public comment offering.

DATES: Comments must be received on or before March 5, 2012.

ADDRESSES: Send all comments on the proposed technical standard order 
to: Federal Aviation Administration (FAA), Aircraft Certification 
Service, Aircraft Engineering Division, Avionics Systems Branch (AIR-
130), 470 L'Enfant Plaza, Suite 4102, Washington, DC 20024. Attn. Ms. 
Charisse Green. Or you may hand deliver comments to 470 L'Enfant Plaza, 
Suite 4102, Washington, DC 20024.

FOR FURTHER INFORMATION CONTACT: Ms. Charisse Green, AIR-130, Federal 
Aviation Administration, 470 L'Enfant Plaza, Suite 4102, Washington, DC 
20024. Telephone (202) 385-4637, fax (202) 385-4651, email to: 
Charisse.Green@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

    You are invited to comment on the proposed revised TSO by 
submitting written data, views, or arguments to the above address. 
Comments received may be examined, both before and after the closing 
date at the above address, weekdays except federal holidays, between 
8:30 a.m. and 4:30 p.m. The Director, Aircraft Certification Service, 
will consider all comments received on or before the closing date.

Background

    The initial public offering of the draft TSO-C151c offered the 
following changes:
    a. Clarification of the 500 foot altitude call out requirement for 
Class A TAWS equipment.
    b. Addition of Localizer Performance with Vertical guidance (LPV) 
and Global Navigation Satellite System (GNSS) Landing System (GLS) 
glidepath alerting to the Ground Proximity Warning System (GPWS) Mode 5 
glideslope alert.
    c. Elimination of the provision to adjust or modify the GPWS 
envelopes to minimize nuisance alerts based on Forward-Looking Terrain 
Avoidance (FLTA) and Premature Descent Alert (PDA) functionality 
without a deviation.
    d. Allowances for eliminating GPWS nuisance alerts (Appendix 1, 
paragraph 3.4).
    e. Requirement for the primary horizontal position source to be 
GPS, to ensure utilization of the most accurate and consistent 
horizontal position data.
    f. Addition of velocity and vertical GPS reporting requirement to 
inhibit alerting when GPS position is invalid, unless a backup position 
source is in use.
    The FAA received numerous comments on: (1) The 500 foot altitude 
call out; (2) the elimination of the GPWS envelope modification 
allowance; (3) the GPS horizontal position source requirement; and (4) 
the position source requirements. A summary of those public comments 
and the FAA's resolution are included with the second draft of TSO-
C151c.
    This announcement requesting comments to the revised proposed TSO-
C151c, contains the following significant changes:
    a. Alert suppression for Required Navigation Performance (RNP) 
requirements are added to Appendix 1, Paragraph 3.1.4.
    b. The allowance in TSO-C151b to adjust or modify the GPWS alerting 
thresholds is restored in the current version of TSO-C151c. (We provide 
clarifying language that deviations need to be accomplished in 
accordance with Title 14 of the Code of Federal Regulations (14 CFR) 
21.618.)
    c. The requirement in the initial proposal of TSO-C151c, requiring 
the Class A 500 ft voice call out on all approaches is changed to the 
TSO-C151b requirement, for the Class A 500 ft voice call out on non-
precision approaches only.
    d. TSO-C151b and the first offering of the proposed TSO-C151c, both 
allowed for the 500 ft callout to be made based on radar altimeter 
height above terrain, or by a comparison of current altitude 
(barometric or GNSS) above the runway threshold height. This revised 
proposed TSO-C151c allows the 500 ft voice call out to be the current 
altitude (barometric or GNSS) above the runway threshold height. Note 
that in the current proposal, the allowance to make the voice callout 
based solely on a radio altimeter height above terrain is removed. The 
rationale is that all TAWS equipped aircraft will annunciate the 
altitude call referenced to the runway

[[Page 5617]]

threshold height, allowing for consistency in the altitude call out.
    e. Clarification of TAWS position requirements (See Proposed 
Paragraphs 5.0 through 5.6).
    f. All GPS requirements are unchanged from the TSO-C151b 
requirement.

How To Obtain Copies

    A copy of the proposed TSO-C151c may be obtained via the 
information contained in the section titled FOR FURTHER INFORMATION 
CONTACT, or from the FAA Internet Web site at: http://www.faa.gov/aircraft/draft_docs/.

    Issued in Washington, DC, on January 31, 2012.
Susan J. M. Cabler,
Assistant Manager, Aircraft Engineering Division, Aircraft 
Certification Service.
[FR Doc. 2012-2464 Filed 2-2-12; 8:45 am]
BILLING CODE 4910-13-P