
[Federal Register Volume 77, Number 120 (Thursday, June 21, 2012)]
[Proposed Rules]
[Pages 37340-37342]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-15168]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0642; Directorate Identifier 2011-NM-262-AD]
RIN 2120-AA64


Airworthiness Directives; BAE SYSTEMS (OPERATIONS) LIMITED 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain BAE SYSTEMS (OPERATIONS) LIMITED Model BAe 146 series airplanes 
and Model Avro 146-RJ series airplanes. This proposed AD was prompted 
by hydraulic pipe ruptures in the center of the cabin resulting in 
passengers being contaminated with hydraulic fluid. This proposed AD 
would require installing a hydraulic fluid containment system. We are 
proposing this AD to prevent harmful or hazardous concentrations of 
hydraulic fluid or hydraulic vapor from entering the passenger 
compartment, possibly resulting in injury to the passengers.

DATES: We must receive comments on this proposed AD by August 6, 2012.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: (202) 493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact BAE 
SYSTEMS (OPERATIONS) LIMITED, Customer Information Department, 
Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United 
Kingdom; telephone +44 1292 675207; fax +44 1292 675704; email 
RApublications@baesystems.com; Internet http://www.baesystems.com/Businesses/RegionalAircraft/index.htm. You may review copies of the 
referenced service information at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue SW., Renton, Washington. For information 
on the availability of this material at the FAA, call 425-227-1221.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this proposed AD, the regulatory 
evaluation, any comments received, and other information. The street 
address for the Docket Operations office (telephone (800) 647-5527) is 
in the ADDRESSES section. Comments will be available in the AD docket 
shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
1601 Lind Avenue SW., Renton,

[[Page 37341]]

Washington 98057-3356; telephone (425) 227-1175; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2012-0642; 
Directorate Identifier 2011-NM-262-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
Airworthiness Directive 2011-0220, dated November 11, 2011 (referred to 
after this as ``the MCAI''), to correct an unsafe condition for the 
specified products. The MCAI states:

    Cases of hydraulic pipe ruptures in the centre of the cabin of 
BAe 146 aeroplanes have been reported, which have resulted in the 
passengers being contaminated with hydraulic fluid. The results of 
the investigations have shown that the pipe failures were caused by 
a combination of seam welded pipes, bends in the pipe runs with 
small bend radii and fatigue damage due to pressure variations.
    This condition, if not corrected, could lead to harmful or 
hazardous concentrations of hydraulic fluid or hydraulic vapour 
entering the passenger compartment, possibly resulting in injury to 
the occupants.
    For the reasons described above, this [EASA] AD requires the 
installation of a flexible envelope around the hydraulic pipe group 
where the failures have occurred to capture and contain any fluid 
escaping from a burst pipe and channel it below floor level into the 
forward cargo bay.

You may obtain further information by examining the MCAI in the AD 
docket.

Relevant Service Information

    BAE SYSTEMS (OPERATIONS) LIMITED has issued Modification Service 
Bulletin SB.29-048-30676A, Revision 2, dated December 23, 2010. The 
actions described in this service information are intended to correct 
the unsafe condition identified in the MCAI.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 1 product of U.S. registry. We also estimate that it 
would take about 8 work-hours per product to comply with the basic 
requirements of this proposed AD. The average labor rate is $85 per 
work-hour. Required parts would cost about $5,079 per product. Where 
the service information lists required parts costs that are covered 
under warranty, we have assumed that there will be no charge for these 
parts. As we do not control warranty coverage for affected parties, 
some parties may incur costs higher than estimated here. Based on these 
figures, we estimate the cost of the proposed AD on U.S. operators to 
be $5,759.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect 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.
    For the reasons discussed above, I certify 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);
    3. Will not affect intrastate aviation in Alaska; and
    4. 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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 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. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new AD:

BAE SYSTEMS (OPERATIONS) LIMITED: Docket No. FAA-2012-0642; 
Directorate Identifier 2011-NM-262-AD.

(a) Comments Due Date

    We must receive comments by August 6, 2012.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to BAE SYSTEMS (OPERATIONS) LIMITED Model BAe 
146-100A, -200A, and -300A airplanes, and Model Avro 146-RJ70A, 146-
RJ85A, and 146-RJ100A airplanes; certificated in any category except 
for airplanes operating in a cargo configuration. The requirements 
of this AD become applicable at the time an airplane operating in a 
cargo configuration is converted to a passenger configuration.

(d) Subject

    Air Transport Association (ATA) of America Code 29, Hydraulic 
power.

[[Page 37342]]

(e) Reason

    This AD was prompted by hydraulic pipe ruptures in the center of 
the cabin resulting in passengers being contaminated with hydraulic 
fluid. We are issuing this AD to prevent harmful or hazardous 
concentrations of hydraulic fluid or hydraulic vapor from entering 
the passenger compartment, possibly resulting in injury to the 
passengers.

(f) Compliance

    You are responsible for having the actions required by this AD 
performed within the compliance times specified, unless the actions 
have already been done.

(g) Actions

    Within 4,000 flight hours or 24 months after the effective date 
of this AD, whichever occurs first, install the hydraulic fluid 
containment system, in accordance with the Accomplishment 
Instructions of BAE SYSTEMS (OPERATIONS) LIMITED Modification 
Service Bulletin SB.29-048-30676A, Revision 2, dated December 23, 
2010.

(h) Credit for Previous Actions

    This paragraph provides credit for the actions required by 
paragraph (g) of this AD, if those actions were performed before the 
effective date of this AD, using the service bulletin specified in 
paragraph (h)(1) or (h)(2) of this AD.
    (1) BAE SYSTEMS (OPERATIONS) LIMITED Modification Service 
Bulletin SB.29-048-30676A, dated October 18, 2010.
    (2) BAE SYSTEMS (OPERATIONS) LIMITED Modification Service 
Bulletin SB.29-048-30676A, Revision 1, dated November 5, 2010.

(i) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Branch, ANM-116, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. In accordance with 14 CFR 39.19, send your request to your 
principal inspector or local Flight Standards District Office, as 
appropriate. If sending information directly to the International 
Branch, send it to ATTN: Todd Thompson, Aerospace Engineer, 
International Branch, ANM-116, Transport Airplane Directorate, FAA, 
1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone (425) 
227-1175; fax (425) 227-1149. Information may be emailed to: 9-ANM-116-AMOC-REQUESTS@faa.gov. Before using any approved AMOC, notify 
your appropriate principal inspector, or lacking a principal 
inspector, the manager of the local flight standards district 
office/certificate holding district office. The AMOC approval letter 
must specifically reference this AD.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.

(j) Related Information

    (1) Refer to MCAI European Aviation Safety Agency (EASA) 
Airworthiness Directive 2011-0220, dated November 11, 2011; and BAE 
SYSTEMS (OPERATIONS) LIMITED Modification Service Bulletin SB.29-
048-30676A, Revision 2, dated December 23, 2010; for related 
information.
    (2) For service information identified in this AD, contact BAE 
SYSTEMS (OPERATIONS) LIMITED, Customer Information Department, 
Prestwick International Airport, Ayrshire, KA9 2RW, Scotland, United 
Kingdom; telephone +44 1292 675207; fax +44 1292 675704; email 
RApublications@baesystems.com; Internet http://www.baesystems.com/Businesses/RegionalAircraft/index.htm. You may review copies of the 
referenced service information at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue SW., Renton, Washington. For 
information on the availability of this material at the FAA, call 
425-227-1221.

    Issued in Renton, Washington, on June 12, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-15168 Filed 6-20-12; 8:45 am]
BILLING CODE 4910-13-P


