[Federal Register Volume 59, Number 127 (Tuesday, July 5, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-16158]
[[Page Unknown]]
[Federal Register: July 5, 1994]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 94-NM-67-AD]
Airworthiness Directives; Raytheon Corporate Jets Model BAe 125-
1000A Series Airplanes
AGENCY: Federal Aviation Administration, DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: This document proposes the adoption of a new airworthiness
directive (AD) that is applicable to certain Raytheon Corporate Jets
Model BAe 125-1000A series airplanes. This proposal would require
modification of the galley feeder cables and toilet services fuse. This
proposal is prompted by a report that the gauge size of the existing
galley feeder cable is not compatible with the rating of the currently
used toilet services fuse. The actions specified by the proposed AD are
intended to ensure that the subject cables are compatible with the
toilet services fuse in order prevent overheating of the cables, which
could result in smoke and fire in the cabin.
DATES: Comments must be received by September 22, 1994.
ADDRESSES: Submit comments in triplicate to the Federal Aviation
Administration (FAA), Transport Airplane Directorate, ANM-103,
Attention: Rules Docket No. 94-NM-67-AD, 1601 Lind Avenue SW., Renton,
Washington 98055-4056. Comments may be inspected at this location
between 9:00 a.m. and 3:00 p.m., Monday through Friday, except Federal
holidays.
The service information referenced in the proposed rule may be
obtained from Raytheon Corporate Jets, Inc., Customer Support
Department, Adams Field, P.O. Box 3356, Little Rock, Arkansas 72203.
This information may be examined at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW., Renton, Washington.
FOR FURTHER INFORMATION CONTACT: William Schroeder, Aerospace Engineer,
Standardization Branch, ANM-113, FAA, Transport Airplane Directorate,
1601 Lind Avenue SW., Renton, Washington 98055-4056; telephone (206)
227-1112; fax (206) 227-1100.
SUPPLEMENTARY INFORMATION:
Comments Invited
Interested persons are invited to participate in the making of the
proposed rule by submitting such written data, views, or arguments as
they may desire. Communications shall identify the Rules Docket number
and be submitted in triplicate to the address specified above. All
communications received on or before the closing date for comments,
specified above, will be considered before taking action on the
proposed rule. The proposals contained in this notice may be changed in
light of the comments received.
Comments are specifically invited on the overall regulatory,
economic, environmental, and energy aspects of the proposed rule. All
comments submitted will be available, both before and after the closing
date for comments, in the Rules Docket for examination by interested
persons. A report summarizing each FAA-public contact concerned with
the substance of this proposal will be filed in the Rules Docket.
Commenters wishing the FAA to acknowledge receipt of their comments
submitted in response to this notice must submit a self-addressed,
stamped postcard on which the following statement is made: ``Comments
to Docket Number 94-NM-67-AD.'' The postcard will be date stamped and
returned to the commenter.
Availability of NPRMs
Any person may obtain a copy of this NPRM by submitting a request
to the FAA, Transport Airplane Directorate, ANM-103, Attention: Rules
Docket No. 94-NM-67-AD, 1601 Lind Avenue, SW., Renton, Washington
98055-4056.
Discussion
The Civil Aviation Authority (CAA), which is the airworthiness
authority for the United Kingdom, recently notified the FAA that an
unsafe condition may exist on certain Raytheon Corporate Jets Model BAe
125-1000A series airplanes. The CAA advises that the gauge size of the
galley feeder cables installed on these airplanes is not compatible
with the rating of the toilet services fuses. In the event of a fault
condition, the incompatibility of these items could result in the
cables becoming overheated, which could lead to the generation of smoke
and fire in the cabin. There have been no in-service incidents of such
faults or consequent smoke and fire, however.
Hawker-Raytheon Corporate Jets has issued Service Bulletin SB.25-
75-25A698A&B, dated February 10 1994, that describes procedures for
installing Modification 25A698A&B on airplanes that were furnished with
an ``open plan'' galley. This modification consists of changing the
gauge size of the galley feeder cables (from fuses F1 and F2 on panel
WFA to the left and right galley) from size 10 to size 8; changing the
toilet services fuse F3 from 50A to 30A amperage; and adding a new 20A
fuse to the left and right galley.
Hawker-Raytheon Corporate Jets also has issued Service Bulletin
SB.25-75-25A699A, dated February 10 1994, that describes procedures for
installing Modification 25A699A on airplanes that were furnished with a
``traditional'' galley. This modification consists of changing the
gauge size of the galley feeder cables (from fuses F1 and F2 on panel
WFA to the galley) from size 10 to size 8; changing the toilet services
fuse F3 from 50A to 30A amperage; and adding a new 20A fuse to the
galley.
The CAA classified both of these service bulletins as mandatory.
This airplane model is manufactured in the United Kingdom and is
type certificated for operation in the United States under the
provisions of section 21.29 of the Federal Aviation Regulations (14 CFR
21.29) and the applicable bilateral airworthiness agreement.
Pursuant to this bilateral airworthiness agreement, the CAA has
kept the FAA informed of the situation described above. The FAA has
examined the findings of the CAA, reviewed all available information,
and determined that AD action is necessary for products of this type
design that are certificated for operation in the United States.
Since an unsafe condition has been identified that is likely to
exist or develop on other airplanes of the same type design registered
in the United States, the proposed AD would require modification of the
galley feeder cables and toilet services fuses. The actions would be
required to be accomplished in accordance with the service bulletins
described previously.
The FAA estimates that 4 airplanes of U.S. registry would be
affected by this proposed AD, that it would take approximately 16 work
hours per airplane to accomplish the proposed actions, and that the
average labor rate is $55 per work hour. Required parts would cost
approximately $500 per airplane. Based on these figures, the total cost
impact of the proposed AD on U.S. operators is estimated to be $5,520,
or $1,380 per airplane.
The total cost impact figure discussed above is based on
assumptions that no operator has yet accomplished any of the proposed
requirements of this AD action, and that no operator would accomplish
those actions in the future if this AD were not adopted.
The regulations proposed herein would not have substantial direct
effects on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government. Therefore, in
accordance with Executive Order 12612, it is determined that this
proposal would not have sufficient federalism implications to warrant
the preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this proposed
regulation (1) is not a ``significant regulatory action'' under
Executive Order 12866; (2) is not a ``significant rule'' under the DOT
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979);
and (3) if promulgated, will not have a significant economic impact,
positive or negative, on a substantial number of small entities under
the criteria of the Regulatory Flexibility Act. A copy of the draft
regulatory evaluation prepared for this action is contained in the
Rules Docket. A copy of it may be obtained by contacting the Rules
Docket at the location provided under the caption ADDRESSES.''
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
The Proposed Amendment
Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration proposes to amend
part 39 of the Federal Aviation Regulations (14 CFR part 39) as
follows:
PART 39--AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. App. 1354(a), 1421 and 1423; 49 U.S.C.
106(g); and 14 CFR 11.89.
Sec. 39.13 [Amended]
2. Section 39.13 is amended by adding the following new
airworthiness directive:
Raytheon Corporate Jets, Inc.: Docket 94-NM-67-AD.
Applicability: Model BAe 125-1000A series airplanes; as listed
in Hawker-Raytheon Corporate Jets Service Bulletin SB.25-76-
25A698A&B, dated February 10, 1994, and Hawker-Raytheon Corporate
Jets Service Bulletin SB.25-76-25A699A, dated February 10, 1994;
certificated in any category.
Compliance: Required as indicated, unless accomplished
previously.
To prevent smoke and fire in the cabin due to overheating of
galley cables, accomplish the following: -
(a) For airplanes listed in Hawker-Raytheon Corporate Jets
Service Bulletin SB.25-76-25A698A&B, dated February 10, 1994: Within
100 hours time-in-service after the effective date of this AD,
install Modification 25A698A&B in accordance with that service
bulletin. -
(b) For airplanes listed in Hawker-Raytheon Corporate Jets
Service Bulletin SB.25-76-25A699A, dated February 10, 1994: Within
100 hours time-in-service after the effective date of this AD,
install Modification 25A699A in accordance with that service
bulletin. -
(c) An alternative method of compliance or adjustment of the
compliance time that provides an acceptable level of safety may be
used if approved by the Manager, Standardization Branch, ANM-113,
FAA, Transport Airplane Directorate. Operators shall submit their
requests through an appropriate FAA Principal Maintenance Inspector,
who may add comments and then send it to the Manager,
Standardization Branch, ANM-113.
-Note: Information concerning the existence of approved
alternative methods of compliance with this AD, if any, may be
obtained from the Standardization Branch, ANM-113.
-(d) Special flight permits may be issued in accordance with
sections 21.197 and 21.199 of the Federal Aviation Regulations (14
CFR 21.197 and 21.199) to operate the airplane to a location where
the requirements of this AD can be accomplished.
Issued in Renton, Washington, on June 28, 1994.
Darrell M. Pederson,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 94-16158 Filed 7-1-94; 8:45 am]
BILLING CODE 4910-13-U
