[Federal Register: May 17, 2001 (Volume 66, Number 96)]
[Notices]
[Page 27589]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr17my01-113]
[[Page 27589]]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Proposed Advisory Circular 25.1353-1X, Electrical Equipment and
Installations
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of availability of proposed Advisory Circular (AC)
25.1353-1X and request for comments.
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SUMMARY: This notice announces the availability of and requests comment
on a proposed advisory circular (AC) that provides methods acceptable
to the Administrator for showing compliance with the airworthiness
standards for electrical equipment on transport category airplanes. The
guidance provided in the AC supplements the engineering and operational
judgment that must form the basis of any compliance findings relative
to electrical installation and nickel cadmium installation to minimize
the hazards to an airplane. 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 June 15, 2001.
ADDRESSES: Send all comments on the proposed AC to: Federal Aviation
Administration, Attn: Stephen Slotte, FAA, Transport Airplane
Directorate, Aircraft Certification Service, Airplane and Flightcrew
Branch, ANM-111, 1601 Lind Avenue SW., Renton, Washington 98055-4056.
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: Susan Boylon, Standardization Branch,
ANM-113, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW.,
Renton, Washington 98055-4056; telephone (425) 227-1152.
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 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
AC's'' under the ``Available Information'' drop-down menu. A paper copy
of the proposed AC may be obtained by contacting the person named above
under the caption FOR FURTHER INFORMATION CONTACT.
Discussion
Proposed AC 25.1353-1X, ``Electrical Equipment and Installations,''
has been prepared to provide guidance on one means of demonstrating
compliance with the requirements of Sec. 25.1353, ``Electrical
Equipment and Installations,'' of Title 14, Code of Federal Regulations
(CFR) part 25, commonly referred to as part 25 of the Federal Aviation
Regulations (FAR). Part 25 contains the airworthiness standards
applicable to transport category airplanes.
The means of compliance described in proposed AC 25.1353-1X is
intended to provide guidance to supplement the engineering and
operational judgment that must form the basis of any compliance
findings relative to paragraph Secs. 25.1353(a) and 25.1353(c)(6).
These paragraphs concern electrical equipment, nickel cadmium battery
installations, and nickel cadmium battery storage.
In accordance with the requirements of Sec. 25.1353(a), show
compliance by considering the following sources of interference:
a. Conducted and radiated interference caused by electrical noise
generation from apparatus connected to the busbars,
b. Coupling between electrical cables or between cables and aerial
feeders,
c. Malfunctioning of electrically-powered apparatus,
d. Parasitic currents and voltages in the electrical distribution
and earth systems, including the affects of lightning currents or
static discharge,
e. Difference frequencies between generating or other systems, and
f. The requirements of Sec. 25.1309 should also be satisfied.
In accordance with the requirements Sec. 25.1353(c)(6)(ii) and
(iii), show compliance by demonstrating the following:
a. Where temperature sensing and over-temperature warning devices
are installed to comply with Sec. 25.1353(c)(6)(ii) or (iii), their
correct operations should be verified at agreed maintenance intervals
in addition to compliance with Sec. 25.1309(a) and (b).
Harmonization of Standards and Guidance
The proposed AC is based on recommendations submitted to the FAA by
the Aviation Rulemaking Advisory Committee (ARAC). The FAA tasked ARAC
(63 FR 50954, September 23, 1998) to provide advice and recommendations
on ``harmonizing'' certain sections of part 25 with the counterpart
standards contained in Joint Aviation Requirements (JAR) 25. The goal
of ``harmonization tasks,'' such as this, is to ensure that:
Where possible, standards and guidance do not require
domestic and foreign parties to manufacture or operate to different
standards for each country involved; and
The standards and guidance adopted are mutually acceptable
to the FAA and the foreign aviation authorities.
The guidance contained in the proposed AC has been harmonized with
that of the JAA, and provides a method of compliance that has been
found acceptable to both the FAA and JAA.
Issued in Renton, Washington, on May 3, 2001.
Lirio Liu Nelson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 01-12197 Filed 5-16-01; 8:45 am]
BILLING CODE 4910-13-P