[Federal Register Volume 65, Number 22 (Wednesday, February 2, 2000)]
[Notices]
[Pages 5011-5012]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-2247]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Proposed Advisory Circular (AC) 23-XX-32, Installation of Terrain 
Awareness and Warning System (TAWS) Approved Under TSO-C151a for Part 
23 Airplanes

AGENCY:  Federal Aviation Administration, DOT.

ACTION:  Notice of availability of proposed Advisory Circular (AC) AC 
23-XX-32 and request for comments.

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SUMMARY:  This notice announces the availability of and requests 
comments

[[Page 5012]]

regarding proposed Advisory Circular (AC) 23-XX-32, Installation of 
Terrain Awareness and Warning System (TAWS) Approved Under TSO-C151a 
for Part 23 Airplanes. This AC establishes an acceptable means, but not 
the only means, of obtaining FAA airworthiness approval for the 
installation of a TAWS that has been approved under Technical Standard 
Order (TSO)-C151a, Terrain Awareness and Warning System, in a Part 23 
airplane.

DATES:  Comments must be received on or before March 20, 2000. There 
will be no extensions for late comments.

ADDRESSES:  Send both a hard copy and an electronic copy of all 
comments on the proposed AC to the Federal Aviation Administration, 
Attention: Pat Nininger ([email protected]), Regulations and Policy 
Branch, ACE-111, Small Airplane Directorate, Federal Aviation 
Administration, 901 Locust, Room 301, Kansas City, Missouri 64106, 
telephone number (816) 329-4129, or facsimile (816) 329-4090.

FOR FURTHER INFORMATION CONTACT:  Ervin Dvorak, Aerospace Engineer, 
Regulations and Policy Branch, ACE-111, Small Airplane Directorate, 
Federal Aviation Administration, 901 Locust, Room 301, Kansas City, 
Missouri 64106, telephone number (816) 329-4123.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Any person may obtain a copy of the proposed AC by contacting the 
person named above under ADDRESSES or the AC should be available within 
a few days on the internet at http://www.faa.gov/avr/air/airhome.htm. 
We invite interested persons to comment on the proposed AC by 
submitting comments to the address specified above. The FAA will 
consider all comments received on or before the closing date before 
issuing the AC. Comments may be examined at the Small Airplane 
Directorate, Federal Aviation Administration, 901 Locust, Room 301, 
Kansas City, Missouri 64106, between 7:30 a.m. and 4:00 p.m. weekdays, 
except Federal holidays.

Background

    On November 29, 1999, the FAA issued TSO-C151a. TSO-C151a 
prescribes the minimum design standards that a TAWS must meet to be 
identified with the TSO-C151a marking. For further in-depth information 
concerning the TAWS' capabilities, refer to TSO-C151a.
    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 procedures for installation approval or procedures 
for design or implementation of an installation. With future rulemaking 
and heightened interest by manufacturers and operators to equip Part 23 
airplanes with TAWS systems that are compliant with TSO-C151a, the FAA 
has recognized the need to establish guidance material for the design 
and test requirements for the installation of such systems. This AC has 
been developed as the means for providing such guidance for Part 23 
airplanes.

    Issued in Kansas City, Missouri, on January 19, 2000.
Michael Gallagher,
Manager, Small Airplane Directorate.
[FR Doc. 00-2247 Filed 2-1-00; 8:45 am]
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