58562 Federal Register / Vol. 70, No. 193 / Thursday, October 6, 2005 / Notices 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

Proposed Advisory Circular 25.17XX, 

‘‘Certification of Electrical Wiring 

Interconnection Systems on Transport 

Category Airplanes’’ 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of availability and 

request for comments. 

SUMMARY: This notice announces the 

availability of and requests comments 

on a proposed advisory circular (AC) 

that sets forth acceptable methods of 

compliance with 14 CFR part 25, 

subpart H, sections §§25.1701 through 

25.1739 and sections H25.4 and H25.5 

of Appendix H to part 25. This proposed 

AC complements revisions to the 

airworthiness standards that are being 

proposed by a separate notice. 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 5, 2005. 

ADDRESSES: Send all comments on the 

proposed AC to: Federal Aviation 

Administration, Attention: Stephen 

Slotte, ANM–111, Airplane & Flight 

Crew Interface, Federal Aviation 

Administration, 1601 Lind Avenue SW., 

Renton, WA 98055–4056; telephone 

(425) 227–2315; facsimile (425) 227– 

1320, e-mail steve.slotte@faa.gov. 

Comments may be inspected at the 

above address between 7:30 a.m. and 4 

p.m. weekdays, except Federal holidays. 

FOR FURTHER INFORMATION CONTACT: 

Annette Kovite, Transport Standards 

Staff, at the address above, telephone 

(425) 227–1262. 

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 should identify AC 

25.17XX 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 FAA before 

issuing the final AC. The proposed AC 

can be found and downloaded from the 

Internet at http://www.airweb.faa.gov/ 

rgl under ‘‘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 

This proposed AC provides guidance 

for certification of electrical wiring 

interconnection systems on transport 

category airplanes in accordance with 

14 CFR part 25, subpart H—Electrical 

Wiring Interconnection Systems (EWIS), 

and section H25.4 and H25.5 of 

Appendix H to part 25. The guidance 

provided in this proposed AC is 

directed to transport category airplane 

manufacturers, modifiers, foreign 

regulatory authorities, FAA transport 

airplane type certification engineers, 

designees, and FAA Flight Standards 

personnel. It is one means, but not the 

only means, of complying with the part 

25 revisions proposed in Notice No. 05– 

08, entitled ‘‘Enhanced Airworthiness 

Program for Airplane Systems/Fuel 

Tank Safety (EAPAS/FTS),’’ published 

in this same edition of the Federal 

Register. Issuance of AC 25.17XX is 

contingent on final adoption of the 

proposed revisions to part 25. 

Issued in Washington, DC, on September 

22, 2005. 

John J. Hickey, 

Director, Aircraft Certification Service. 

[FR Doc. 05–19408 Filed 10–5–05; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

Proposed Advisory Circular 25–YY, 

‘‘Development of Standard Wiring 

Practices Documentation’’ 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of availability and 

request for comments. 

SUMMARY: This notice announces the 

availability of and requests comments 

on a proposed advisory circular (AC) 

that sets forth acceptable methods of 

compliance with section H25.5(a)(2) of 

Appendix H to 14 CFR part 25 

concerning development of an electrical 

system standard wiring practices 

document. This proposed AC 

complements revisions to the 

airworthiness standards that are being 

proposed by a separate notice. 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 5, 2005. 

ADDRESSES: Send all comments on the 

proposed AC to: Federal Aviation 

Administration, Attention: Stephen 

Slotte, ANM–111, Airplane & Flight 

Crew Interface, Federal Aviation 

Administration, 1601 Lind Avenue SW., 

Renton, WA 98055–4056; telephone 

(425) 227–2315; facsimile (425) 227– 

1320, e-mail steve.slotte@faa.gov. 

Comments may be inspected at the 

above address between 7:30 a.m. and 4 

p.m. weekdays, except Federal holidays. 

FOR FURTHER INFORMATION CONTACT: 

Annette Kovite, Transport Standards 

Staff, at the address above, telephone 

(425) 227–1262. 

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 should identify AC 25–YY 

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 FAA before issuing 

the final AC. The proposed AC can be 

found and downloaded from the 

Internet at http://www.airweb.faa.gov/ 

rgl under ‘‘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 

This proposed AC provides guidance 

for demonstrating compliance with the 

transport category airplane certification 

requirements of H25.5 Electrical Wiring 

Interconnection System (EWIS) 

Instructions for Continued 

Airworthiness. The guidance provided 

in this proposed AC is applicable to all 

air carriers, air operators, holders of 

type certificates, holders of STCs, 

maintenance providers, and repair 

stations operating under 14 CFR parts 

21, 25, 43, 91, 121, 125, 135, and 145. 

This guidance is a product of the 

Aging Non-Structural Systems Plan. The 

FAA developed the Aging NonStructural Systems Plan to address 

recommendations of the White House 

Commission on Aviation Safety and 

Security (WHCSS). That commission 

recommended that, in cooperation with 

airlines and manufacturers, the FAA’s 

Aging Aircraft Program should be 

expanded to cover nonstructural 

systems. 

The commission was concerned that 

existing directives, procedures, quality 

assurance, and inspections may not be 

sufficient to prevent safety-related 

problems caused by corrosion and other 

deteriorating effects on nonstructural 

components of commercial aircraft as 

they age. To fully address the WHCSS 

recommendations on aging systems, we