[Federal Register Volume 71, Number 21 (Wednesday, February 1, 2006)]
[Notices]
[Page 5570]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 06-897]



[[Page 5569]]

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Part VI





Department of Transportation





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Federal Aviation Administration



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Proposed Advisory Circular (AC) 20-HIRF, The Certification of Aircraft 
Electrical and Electronic Systems for Operation in the High Intensity 
Radiated Field (HIRF) Environment; Notice

  Federal Register / Vol. 71, No. 21 / Wednesday, February 1, 2006 / 
Notices  

[[Page 5570]]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

[Docket No. FAA-2006-23658]


Proposed Advisory Circular (AC) 20-HIRF, The Certification of 
Aircraft Electrical and Electronic Systems for Operation in the High 
Intensity Radiated Field (HIRF) Environment

AGENCY: Federal Aviation Administration (DOT).

ACTION: Notice of availability and request for public comment.

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SUMMARY: This notice announces the availability of, and requests 
comments on proposed Advisory Circular (AC) 20-HIRF, The Certification 
of Aircraft Electrical and Electronic Systems for Operation in the High 
Intensity Radiated Field (HIRF) Environment. This proposed AC provides 
information and guidance concerning an acceptable means, but not the 
only means, of showing compliance with the High Intensity Radiated 
Field (HIRF) Notice of Proposed Rulemaking (NPRM) published in the 
Federal Register on February 1, 2006, regarding the operation of 
electrical and electronic systems on an aircraft when the aircraft is 
exposed to an external HIRF environment.

DATES: Comments must be received on or before May 2, 2006.

ADDRESSES: You may send comments identified by Docket Number FAA-2006-
23658 using any of the following methods:
    1. DOT Docket Web site: Go to http://dms.dot.gov and follow the 
instructions for sending your comments electronically;
    2. Mail: Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-001;
    3. Fax: 1-202-493-2251; or
    4. Hand Delivery: Room PL-401 on the plaza level of the Nassif 
Building, 400 Seventh Street, SW., Washington, DC, between 9 a.m. and 5 
p.m., Monday through Friday, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Richard E. Jennings, Aircraft 
Certification Service, Aircraft Engineering Division, AIR-130, Federal 
Aviation Administration, c/o Atlanta Aircraft Certification Office, 
1895 Phoenix Blvd., Suite 450, Atlanta, GA 30349. Telephone (770) 703-
6090. Or, via e-mail at: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to comment on the proposed AC 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 AC may be examined, before and after the comment closing date, 
in Room PL-401 on the plaza level of the Nassif Building, 400 Seventh 
Street, SW., Washington, DC, between 9 a.m. and 5 p.m. Monday through 
Friday, except Federal holidays, or on the DOT DMS Web site http://dms.dot.gov at any time. All communications received on or before the 
closing date will be considered by the Manager of the Aircraft 
Engineering Division, Aircraft Certification Service, before issuing 
the final Advisory Circular.

Background

    The external HIRF environment exists because of the transmission of 
electromagnetic radio frequency (RF) energy from radar, radio, 
television, and other ground-based, shipborne, or airborne RF 
transmitters. Because of the vulnerability of aircraft electrical and 
electronic systems to interference from the electromagnetic RF energy 
generated by these transmitters, the FAA proposes to add airworthiness 
standards to protect these systems from this external HIRF environment. 
This proposed AC provides designers, manufacturers, and installers, 
with general information and acceptable means to show compliance with 
the FAA's proposed HIRF airworthiness regulations.

How To Obtain Copies

    You may get a copy of proposed AC 20-HIRF from the Internet at: 
http://www.faa.gov/aircraft/draft_docs/. See section entitled FOR 
FURTHER INFORMATION CONTACT for the complete address if requesting a 
copy by mail.

    Issued in Washington, DC, on January 25, 2006.
Susan J. M. Cabler,
Acting Manager, Aircraft Engineering Division, Aircraft Certification 
Service.
[FR Doc. 06-897 Filed 1-31-06; 8:45 am]
BILLING CODE 4910-13-P