[Federal Register Volume 64, Number 189 (Thursday, September 30, 1999)]
[Notices]
[Pages 52819-52820]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-25456]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Proposed Advisory Circular 25-XX, Transport Airplane Propulsion
Engine and Auxiliary Power Unit Installation Certification Handbook--
The Propulsion Mega AC
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of availability of proposed Advisory Circular (AC) 25-XX
and request for comments.
-----------------------------------------------------------------------
SUMMARY: This document announces the availability of and requests
comment on a proposed advisory circular (AC) that provides guidance on
methods acceptable to the Administrator for showing compliance with the
type certification requirements for propulsion engine and auxiliary
power unit (APU) installations as they apply to transport category
airplanes. This notice is necessary to give all interested persons an
opportunity to present their views on the proposed AC.
DATE: Comments must be received on or before December 29, 1999.
ADDRESS: Send all comments on the proposed AC to: Federal Aviation
Administration (FAA), Attention: Steve Happenny, Propulsion/Mechanical
Systems Branch, ANM-112, Transport Airplane Directorate, Aircraft
Certification Service, 1601 Lind Avenue SW., Renton, Washington 98055-
4056. Comments may be inspected at the above address between 7:30 a.m.
and 4:00 p.m. weekdays, except Federal holidays.
FOR FURTHER INFORMATION CONTACT: Jill DeMarco, Program Management
Branch, ANM-114, FAA, Transport Airplane Directorate, 1601 Lind Avenue
SW., Renton, Washington 98055-4056; telephone (425) 227-1313; fax (425)
227-1320.
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 must identify the AC by title and submit comments in
duplicate to the address specified above. The Transport Airplane
Directorate of the Federal Aviation Administration (FAA) will consider
all communications received on or before the closing date for comments
before issuing the final AC.
Availability of Proposed AC
The proposed AC can be found and downloaded from the Internet at
http://www.faa.gov/avr/air/airhome.htm, at the link titled ``Draft
Advisory Circulars.''
Requests for copies should be directed to the person named above
under the caption FOR FURTHER INFORMATION CONTACT. Please specify
whether a paper copy or a CD-ROM (Microsoft Word Version 6.0/Windows 95
format) copy is needed. Because of the large size of this proposed AC
(approximately 1,200 pages) and the time necessary for copying the
document, expect extra time for fulfilling requests for paper copies.
Discussion
The proposed advisory circular (AC) provides one comprehensive
source of FAA policy and guidance on various methods acceptable to the
Administrator for showing compliance with the type certification
requirements for propulsion engine and auxiliary power unit (APU)
installations on transport category airplanes.
The proposed AC contains information and material concerning all
facets of propulsion system certification that have been derived from
various sources, such as:
Title 14, Code of Federal Regulations (commonly referred
to as the Federal Aviation Regulations),
AC's,
FAA Issue Papers,
Special Conditions,
Technical Standard Orders (TSO),
FAA internal policy memos,
FAA technical reports,
documents issued by the Society of Automotive Engineers
(SAE), and
General Aviation Manufacturers Association (GAMA)
specifications.
The material contained in the proposed AC is intended for use
during propulsion certification activities by airplane manufacturers,
modifiers, foreign regulatory authorities, and Federal Aviation
Administration (FAA) airplane type certification engineers. The policy
and guidance provided in the document has been applied previously and
found to be acceptable to the FAA for demonstrating compliance with the
certification regulations pertaining to propulsion (engine and APU)
installations on transport category airplanes. The methods and
procedures described have evolved through many years and represent
current certification practice.
The FAA's objective in issuing this AC is to formalize existing
policy and guidance so that the public and FAA
[[Page 52820]]
personnel have access to this information in one document. In gathering
all relevant material into one document, the consequent size of the
proposed AC is necessarily large; for this reason, the informal title
of ``The Propulsion Mega AC'' is used throughout the document to
distinguish it from others that are referenced.
Issued in Renton, Washington, on September 23, 1999.
D. L. Riggin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 99-25456 Filed 9-29-99; 8:45 am]
BILLING CODE 4910-13-U
