[Federal Register Volume 65, Number 2 (Tuesday, January 4, 2000)]
[Notices]
[Pages 316-317]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-96]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


TSO-C140: Aerospace Fuel, Engine Oil, and Hydraulic Fluid Hose 
Assemblies

AGENCY: Federal Aviation Administration, (DOT).

ACTION: Notice of availability for public comment.

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SUMMARY: This notice announces the availability of, and requests 
comments on, a proposed Technical Standard Order (TSO) pertaining to 
minimum performance standards and fire resistance standards that hose 
assemblies, commonly used in aerospace fuel, engine oil, and hydraulic 
fluid systems, must meet to be identified with the TSO-C140 marking.

DATES: Comments must be received on or before March 31, 2000.


[[Page 317]]


ADDRESSES: Send all comments on the proposed Technical Standard Order 
to: Airworthiness Programs Branch, AFS-610, Regulatory Support 
Division, Flight Standards Service, Federal Aviation Administration, 
P.O. Box 26460, Oklahoma City, OK 73125-0460, or deliver comments to: 
Federal Aviation Administration, Mike Monroney Aeronautical Center, ARB 
Room 304A, 6500 S. MacArthur Boulevard, Oklahoma City, OK 73169. 
Comments must identify the TSO file number.

FOR FURTHER INFORMATION CONTACT: Ray Brown, Airworthiness Programs 
Branch, AFS-610, Regulatory Support Division, Flight Standards Service, 
Federal Aviation Administration, P.O. Box 26460, Oklahoma City, OK 
73125-0460, Telephone No. (405) 954-6915 or FAX No. (405) 954-4104.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to comment on the proposed TSO 
listed in this notice by submitting such written data, views, or 
arguments, as they desire to the address specified. Comments received 
on the proposed Technical Standard Order may be examined, before and 
after the comment closing date, in ARB Room 304A, Mike Monroney 
Aeronautical Center, 6500 S. MacArthur Boulevard, Oklahoma City, OK 
73169, weekdays, except Federal holidays, between 8:00 a.m. and 4:00 
p.m. All communications received on or before the closing date for 
comments specified above will be considered by the Director of the 
Aircraft Certification Service before issuing the final TSO.

Background

    Current TSO-C53a, ``Fuel and Engine Oil System Hose Assemblies,'' 
and TSO-C75, ``Hydraulic Hose Assemblies,'' were issued in the early 
1960s and have not been updated or revised to reflect the use of new 
materials and manufacturing methods. Proposed TSO-C140 would clearly 
define and identify improved materials and hose designs that would 
satisfy the service parameters for flexible hose assemblies used in 
current aviation applications. The standards of TSO-C140 would apply to 
any model of aerospace fuel, engine oil, or hydraulic fluid hose 
assembly for which a TSO application is submitted after the effective 
date of the TSO.
    Revision B of the Society of Automotive Engineers, Inc. (SAE) 
Aerospace Standard Document No. 150 (AS150 REV B), ``Hose Assembly, 
Type Classifications of, Basic Performance and Fire Resistance,'' is 
referenced in proposed TSO-C140 to establish performance standards and 
test conditions for hose assemblies. Representative samples of fire 
resistant and fireproof hose assemblies would be required to meet the 
test conditions specified in SAE AS1055 REV D, ``Fire Testing of 
Flexible Hose, Tube Assemblies, Coils, Fittings, and Similar System 
Components.''
    Hose assemblies currently approved under a TSO-C53a or TSO-C75 
authorization could continue to be manufactured under the provisions of 
their original approval. Per 14 CFR Sec. 21.611(b), any major design 
change to a hose assembly previously approved under TSO-C53a or TSO-C75 
would require a new authorization under the proposed TSO.

How to Obtain Copies

    A copy of the proposed TSO-C140 may be electronically obtained via 
the Internet (http:/www.faa.gov/avr/air/air100/100home.htm) or 
requested from the FAA office listed under For Further Information 
Contact. Copies of AS150 REV B, AS1055 REV D, and other SAE documents 
referenced in AS150 REV B may be purchased by mail from the Society of 
Automotive Engineers Inc., 400 Commonwealth Drive, Warrendale, PA 
15096; by phone at (724) 776-4970; or by FAX at (724) 776-0790. 
Computer users with Internet access may place an order at Internet 
browser address: <a href="http://www.sae.org/products/standards/stdsinfo/
standard.htm">http://www.sae.org/products/standards/stdsinfo/
standard.htm</a>.

    Issued in Washington, DC on December 17, 1999.
James C. Jones,
Manager, Aircraft Engineering Division, Aircraft Certification Service.
[FR Doc. 00-96 Filed 1-3-00; 8:45 am]
BILLING CODE 4910-13-M