[Federal Register Volume 68, Number 51 (Monday, March 17, 2003)]
[Notices]
[Pages 12734-12735]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 03-6336]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Advisory Circular (AC) 20-73A ``Aircraft Ice Protection''

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 a draft Advisory Circular (AC) 20-73A, Aircraft Ice 
Protection. The draft AC provides general information related to the 
approval of aircraft ice protection provisions in accordance with Title 
14 of the Code of Federal Regulations (14 CFR) parts 23, 25, 29, and 
33. This draft AC also provides guidance and general information 
relative to operation of aircraft in icing environments that may affect 
the aircraft's airworthiness.

DATES: Sumbit comments on or before May 10, 2003.

ADDRESSES: Send all comments on the proposed draft AC to: Federal 
Aviation Administration, Aircraft Certification Service, Room 815, AIR-
130, 800 Independence Avenue, SW., Washington, DC 20591. You may 
deliver comments to: Federal Aviation Administration, 800 Independence 
Avenue, SW., Room 815, Washington, DC 20591.

FOR FURTHER INFORMATION CONTACT: Mr. George T. Soteropoulos, Federal 
Aviation Administration, Aircraft Certification Service, Room 815, AIR-
120, 800 Independence Avenue, SW., Washington, DC 20591, Telephone: 
(202) 267-97960, FAX: (202) 267-5340.

SUPPLEMENTARY INFORMATION:

Comments Invited

    You are invited to comment on the draft AC listed in this notice by 
submitting written data, views, or arguments, to the address listed 
above. Your comments should identify ``Commments to AC 20-73A.'' You 
can examine all comments on the draft AC before and after the closing 
date, at the Federal Aviation Administration, Room 815, 800 
Independence Avenue, SW., Washington, DC 20591, weekdays except Federal 
Holidays between 8:30 a.m. and 4:30 p.m. The Director of the Aircraft 
Certification Service considers all communications received on or 
before the closing date before issuing the final AC.

Background

    Since its release on April 21, 1971, AC 20-73 continues to be 
followed as a means of compliance for inflight icing regulations. The 
objective of this revision is to provide a uniform and modern means of 
compliance with regulations for aircraft and engine ice protection 
requirements. This revision of AC 20-73 is extensive. It addresses 
common ice protection means of compliance for airplanes, rotorcrafts, 
and engines, with references to other applicable advisory circulars 
that address specific types of aircraft, engines, or regulations. An 
effort has been made in this revision to make the information congruent 
with compliance means provided in other existing guidance material and 
policies. Note however that there are instances where current 
technology is considered sufficient to justify changes, and means of 
compliance not previously addressed in guidance and policy material are 
discussed in this proposed document.

How To Obtain Copies

    You may get a copy of the draft AC from the Internet at: http://www.airweb.faa.gov/rgl. You may also request a copy from Mr. George T. 
Soteropoulos.
    See the section entitled For Further Information Contact for the 
complete address.


[[Page 12735]]


    Issued in Washington, DC, on March 7, 2003.
Susan J. M. Cabler,
Deputy Manager, Aircraft Engineering Division, Aircraft Certification 
Service.
[FR Doc. 03-6336 Filed 3-14-03; 8:45 am]
BILLING CODE 4910-13-M