[Federal Register Volume 64, Number 189 (Thursday, September 30, 1999)]
[Notices]
[Page 52820]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-25454]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Proposed Advisory Circular 25.XX, Airworthiness Criteria for the
Installation Approval of a Terrain Awareness and Warning System (TAWS)
Approved Under Technical Standard Order (TSO) C151
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of availability of proposed Advisory Circular 25.XX and
request for comments.
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SUMMARY: This notice announces the availability of and requests comment
on a proposed advisory circular (AC) that provides guidance on one
method for obtaining airworthiness approval for the installation of a
Terrain Awareness and Warning System (TAWS) approved under Technical
Standard Order (TSO) C151. The guidance provided in the proposed AC is
specific to installations of these systems on transport category
airplanes. This notice is necessary to give all interested persons an
opportunity to present their views on the proposed AC.
DATES: Comments must be received on or before December 29, 1999.
ADDRESSES: Send all comments on the proposed AC to: Federal Aviation
Administration, Attn: J. Kirk Baker, ANM-130L, FAA, Transport Airplane
Directorate, Los Angeles Aircraft Certification Office, 3960 Paramount
Blvd., Lakewood, California 90712. Comments may be inspected at the
above address between 7:30 a.m. and 4:00 p.m. weekdays, except Federal
holidays.
FOR FURTHER INFORMATION CONTACT: Jill DeMarco, Program Management
Branch, ANM-114, Transport Airplane Directorate, FAA, 1601 Lind Avenue
SW., Renton, Washington 98055-4056; telephone (425) 227-1313.
SUPPLEMENTARY INFORMATION:
Comments Invited
Interested persons are invited to comment on the proposed AC by
submitting such written data, views, or arguments as they may desire.
Commenters must identify the AC by title and submit comments in
duplicate to the address specified above. All communications received
on or before the closing date for comments will be considered by the
Transport Airplane Directorate before issuing the final AC.
Availability of Proposed AC
The proposed AC can also be found and downloaded from the Internet
at http://www.faa.gov/avr/air/airhome.htm, at the link titled ``Draft
Advisory Circulars.'' A paper copy of the proposed AC may be obtained
by contacting the person named above under the caption FOR FURTHER
INFORMATION CONTACT.
Discussion
The FAA is proposing to issue an AC that describes an acceptable
means, but not the only means, of obtaining airworthiness installation
approval of a Terrain Awareness and Warning System (TAWS) that has been
approved under Technical Standard Order (TSO) C151, ``Terrain Awareness
and Warning System.'' A TAWS is a system that provides the flightcrew
with sufficient information and alerting to detect a potentially
hazardous terrain situation and take effective action. The guidance
provided in the proposed AC is specific to installations of these
systems on transport category airplanes.
The FAA's TSO process is a means of obtaining FAA design and
performance approval for an appliance, system, or product. However, the
TSO does not provide installation approval or procedures for design or
implementation of an installation. With heightened interest by
manufacturers and operators to equip transport category airplanes with
TAWS systems that are compliant with TSO-C151, the FAA has recognized
the need to establish guidance material for the design and test
requirements for the installation of such systems.
This proposed AC has been developed as the means for providing such
guidance for designing an acceptable installation for a TAWS that is
compliant with TSO-C151. It describes the airworthiness considerations
for such installations as they apply to the unique features of the TAWS
and the interface of the TAWS with other systems on the airplane.
Issued in Renton, Washington, on September 23, 1999.
Vi L. Lipski,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 99-25454 Filed 9-29-99; 8:45 am]
BILLING CODE 4910-13-U
