[Federal Register Volume 61, Number 129 (Wednesday, July 3, 1996)]
[Notices]
[Page 35062]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-17035]
Federal Register / Vol. 61, No. 129 / Wednesday, July 3, 1996 /
Notices
[[Page 35062]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Proposed Advisory Circular 25.1435-1, Hydraulic System
Certification Tests and Analysis
AGENCY: Federal Aviation Administration, DOT.
ACTION: Notice of availability of proposed advisory circular (AC)
25.1435-1 and request for comments.
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SUMMARY: This notice announces the availability of and requests
comments on proposed Advisory Circular (AC) 25.1435-1, Hydraulic System
Certification Tests and Analysis. This AC provides guidance on
acceptable means, but not the only means, of demonstrating compliance
with the requirements of Sec. 25.1435 and related regulations
pertaining to hydraulic systems. The proposed AC complements revisions
to the airworthiness standards that are being proposed by a separate
notice. This notice provides interested persons an opportunity to
comment on the proposed AC.
DATES: Comments must be received on or before October 1, 1996.
ADDRESSES: Send all comments on the proposed AC to the Federal Aviation
Administration, Attention: Mahinder K. Wahi, Flight Test and Systems
Branch, ANM-111, Transport Airplane Directorate, Aircraft Certification
Service, FAA, 1601 Lind Avenue SW., Renton, WA 98055-4056. Comments may
be examined at the above address between 7:30 a.m. and 4:00 p.m.
weekdays, except Federal holidays.
FOR FURTHER INFORMATION CONTACT:
Jan Thor, Regulations Branch, ANM-114, at the above address, telephone
(206) 227-2127.
SUPPLEMENTARY INFORMATION:
Comments Invited
A copy of the subject AC may be obtained by contacting the person
named above under FOR FURTHER INFORMATION CONTACT. 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 title of the AC and submit comments in triplicate to the address
specified above. All comments received on or before the closing date
for comments will be considered by the Transport Standards Staff before
issuing the final AC.
Discussion
In 1988, the FAA, in cooperation with the European Joint Aviation
Authorities (JAA) and other organizations representing the American and
European aerospace industries, began a process to harmonize the
airworthiness requirements of the United States and the airworthiness
requirements of Europe.
In 1992, the harmonization effort was undertaken by the Aviation
Rulemaking Advisory Committee (ARAC). A working group of industry and
government hydraulic systems specialists of Europe and the United
States was chartered by notice in the Federal Register (57 FR 58843,
December 12, 1992). The working group was tasked to develop a draft
notice of proposed rulemaking (NPRM) and any collateral documents such
as advisory circulars concerning new or revised requirements for
hydraulic systems and the associated test conditions for hydraulic
systems installed in transport category airplanes (Sec. 25.1435). The
JAA is to develop a similar proposal to amend the Joint Aviation
Requirements (JAR) as necessary, to achieve harmonization.
The advisory material made available via this notice was developed
by the Hydraulic Systems Harmonization Working Group to ensure that the
harmonized standards would be interpreted and applied consistently. It
was presented to the FAA by the ARAC as a recommendation.
Part 25 of the Federal Aviation Regulations (FAR) prescribes the
United States airworthiness standards for transport category airplanes.
Proposed AC 25.1435-1 provides guidelines that the FAA has found
acceptable to demonstrate compliance with those airworthiness standards
for hydraulic systems. Revisions to part 25 are being proposed by the
FAA in a notice of proposed rulemaking published elsewhere in this
issue of the Federal Register. That notice also describes the use of
the Aviation Rulemaking Advisory Committee to develop both the proposed
revisions to part 25 and the proposed AC 25.1435-1.
Proposed AC 25.1435-1 provides additional guidance material and one
means, but not the only means, of complying with the part 25 revisions
proposed in Notice No. 96-[insert notice number of NPRM entitled,
``Revision of Hydraulic Systems Airworthiness Standards to Harmonize
with European Airworthiness Standards for Transport Category
Airplanes'') published in the same edition of the Federal Register].
Issuance of the AC 25.1435-1 is contingent on final adoption of the
proposed revision to part 25.
Issued in Renton, Washington, on February 29, 1996.
James V. Devany,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service, ANM-100.
[FR Doc. 96-17035 Filed 7-2-96; 8:45 am]
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