[Federal Register: April 4, 2002 (Volume 67, Number 65)]
[Notices]               
[Page 16144-16145]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr04ap02-98]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

 
Terrain Awareness and Warning System

AGENCY: Federal Aviation Administration, (DOT).

ACTION: Notice of availability and requests for public comment.

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SUMMARY: This notice announces the availability of and request comments 
on a revised draft Technical Standard Order (TSO) C-151b, Terrain 
Awareness and Warning System. The draft TSO tells persons seeking a TSO 
authorization or letter of design approval what minimum performance 
standards (MPS) their terrain awareness and warning systems must meet 
to be identified with the applicable TSO marking.

DATES: Comments must identify the TSO file number and be received on or 
before June 29, 2002.

ADDRESSES: Send all comments on the proposed technical standard order 
to: Technical Programs and Continued Airworthiness Branch, AIR-120, 
Aircraft Engineering Division, Aircraft Certification Service--File No. 
TSO-C151b, Federal Aviation Administration, 800 Independence Avenue, 
SW., Washington, DC 20591. Or deliver comments to: Federal Aviation 
Administration, Room 815, 800 Independence Avenue, SW., Washington, DC 
20591.

FOR FURTHER INFORMATION CONTACT: Ms. Bobbie J. Smith, Technical 
Programs and Continued Airworthiness Branch, AIR-120, Aircraft 
Engineering Division, Aircraft Certification Service, Federal Aviation 
Administration, 800 Independence Avenue, SW., Washington, DC 20591, 
Telephone (202) 267-9546.

Comments Invited

    Interested persons are invited to comment on the proposed TSO 
listed in this notice by submitting such written data, views, or 
arguments as they desire to the above specified address. Comments 
received or the proposed technical standards order may be examined, 
before and after the comments closing date, in Room 815, FAA 
Headquarters Building (FOB-10A), 800 Independence Avenue, SW., 
Washington, DC 20591, weekdays except Federal holidays, between 8:30 
a.m. and 4:40 p.m. All communications received on or before the closing 
date

[[Page 16145]]

for comments special above will be considered by the Director of the 
Aircraft Certification Service before issuing the final TSO.

Background

    This is revised TSO that sets forth minimum operational performance 
standards that a Terrain Awareness and Warning System (TAWS) equipment 
must meet to be identified with the TSO-C151b Class A, B, or C marking. 
This revision adds the requirements for a Class C designation.
    The standards of this TSO apply to equipment intended to provide 
pilots and flight crews with both aural and visual alters to aid in 
preventing an inadvertent controlled flight into terrain (CFIT) 
accident. Class A and B TAWS equipment are required by 14 CFR Parts 91, 
135, and 121. Class C equipment is intended for voluntary installations 
on aircraft not covered by the TAWS requirements in 14 CFR Parts 91, 
135, and 121.

How To Obtain Copies

    A copy of the proposed TSO--C151 may be obtained via the 
information contained in section title For FURTHER INFORMATION CONTACT. 
Copies of RTCA Document No. RTCA/DO-160D, ``Environmental Conditions 
and Test Procedures for Airborne Equipment,'' dated July 29, 1997, 
RTCA/DO-161A, Minimum Performance Standards--Airborne Ground Proximity 
Warning Equipment,'' dated May 27, 1976, RTCA/DO-200A/EURCAE ED-76, 
``Standards for Processing Aeronautical Data,'' dated September 18, 
1998, and RTCA/DO-178B, ``Software Considerations in Airborne Systems 
and Equipment Certification,'' dated December 1, 1992, may be purchased 
from RTCA, Inc. 1828 L Street, NW., Suite 815, Washington, DC 20036.

Nancy Lane,
Acting Manager, Aircraft Engineering Division, Aircraft Certification 
Service.
[FR Doc. 02-8151 Filed 4-3-02; 8:45 am]
BILLING CODE 4910-13-M