[Federal Register Volume 67, Number 70 (Thursday, April 11, 2002)]
[Notices]
[Pages 17756-17757]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-8783]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Terrain Awareness and Warning System

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of availability 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)-C151b, 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: Federal Aviation Administration, Small Airplane Directorate, File 
No. TSO-C151b, Regulations and Policy, ACE-111, 901 Locust, Room 301, 
Kansas City, MO 64106. Or deliver comments to: Federal Aviation 
Administration, Small Airplane Directorate 901 Locust, Room 301, Kansas 
City, MO.

FOR FURTHER INFORMATION CONTACT: Mr. Lowell Foster, ACE-111, Federal 
Aviation Administration, Small Airplane Directorate, 901 Locus, Room 
301, Kansas City, MO. 64106, Telephone (816) 329-4125.

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 on the proposed technical standard order may be examined, 
before and after the comment 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 4:30 p.m. All communications

[[Page 17757]]

received on or before the closing date for comments specified above 
will be considered by the Director of the Aircraft Certification 
Service before issuing the final TSO.

Background

    This is a 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 alerts 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-C151b may be obtained via the 
information contained in section titled ``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.

    Issued in Washington, DC, on March 29, 2002.
Nancy Lane,
Acting Manager, Aircraft Engineering Division, Aircraft Certification 
Service.
[FR Doc. 02-8783 Filed 4-10-02; 8:45 am]
BILLING CODE 4910-13-M