
[Federal Register: October 31, 2008 (Volume 73, Number 212)]
[Proposed Rules]               
[Page 64897-64899]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr31oc08-24]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2008-1141; Directorate Identifier 2008-NM-025-AD]
RIN 2120-AA64

 
Airworthiness Directives; BAE Systems (Operations) Limited Model 
BAe 146 and Avro 146-RJ 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 the 
products listed above. This proposed AD results from mandatory 
continuing airworthiness information (MCAI) originated by an aviation 
authority of another country to identify and correct an unsafe 
condition on an aviation product. The MCAI describes the unsafe 
condition as:

    During removal of forward and aft wing links, corrosion has been 
found on the wing links and the wing link attachment bolts in areas 
that are not readily accessible during the currently required 
Maintenance Review Board Report (MRBR) zonal inspections or 
Corrosion Prevention and Control Programme (CPCP) inspections. If 
left uncorrected, such corrosion could adversely affect the 
structural integrity of the wing to fuselage joint.
* * * * *
    The proposed AD would require actions that are intended to address 
the unsafe condition described in the MCAI.

DATES: We must receive comments on this proposed AD by December 1, 
2008.

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 W12-40, 1200 New 
Jersey Avenue, SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.

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, 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-2008-1141; 
Directorate Identifier 2008-NM-025-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 2007-0303, dated December 14, 2007 (referred to 
after this as ``the MCAI''), to correct an unsafe condition for the 
specified products. The MCAI states:

    During removal of forward and aft wing links, corrosion has been 
found on the wing links and the wing link attachment bolts in areas 
that are not readily accessible during the currently required 
Maintenance Review Board Report (MRBR) zonal inspections or 
Corrosion Prevention and Control Programme (CPCP) inspections. If 
left uncorrected, such corrosion could adversely affect the 
structural integrity of the wing to fuselage joint.
    For this reason, this Airworthiness Directive (AD) requires 
repetitive detailed visual inspections at the forward and aft wing 
links and wing link attachment bolts for signs of corrosion, 
replacement of corroded nuts and bolts and repair of any defects.

    The MRBR and CPCP will be amended to include the repeat 
inspections. You may obtain further information by examining the MCAI 
in the AD docket.

Relevant Service Information

    The manufacturer has issued BAE Systems (Operations) Limited 
Inspection Service Bulletin ISB.53-203, dated May 7, 2007. The actions 
described in this service information are intended to correct the 
unsafe condition identified in the MCAI.

[[Page 64898]]

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.

Differences Between This AD and the MCAI or Service Information

    We have reviewed the MCAI and related service information and, in 
general, agree with their substance. But we might have found it 
necessary to use different words from those in the MCAI to ensure the 
AD is clear for U.S. operators and is enforceable. In making these 
changes, we do not intend to differ substantively from the information 
provided in the MCAI and related service information.
    We might also have proposed different actions in this AD from those 
in the MCAI in order to follow FAA policies. Any such differences are 
highlighted in a Note within the proposed AD.

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 20 work-hours per product to comply with the basic 
requirements of this proposed AD. The average labor rate is $80 per 
work-hour. Based on these figures, we estimate the cost of the proposed 
AD on U.S. operators to be $1,600.

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); and
    3. 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 (Formerly British Aerospace 
Regional Aircraft): Docket No. FAA-2008-1141; Directorate Identifier 
2008-NM-025-AD.

Comments Due Date

    (a) We must receive comments by December 1, 2008.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to BAE Systems (Operations) Limited Model 
BAe 146-100A, -200A, and -300A series airplanes and Avro 146-RJ70A, 
146-RJ85A, and 146-RJ100A airplanes, certificated in any category, 
all models, all serial numbers.

Subject

    (d) Air Transport Association (ATA) of America Code 53: 
Fuselage.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    During removal of forward and aft wing links, corrosion has been 
found on the wing links and the wing link attachment bolts in areas 
that are not readily accessible during the currently required 
Maintenance Review Board Report (MRBR) zonal inspections or 
Corrosion Prevention and Control Programme (CPCP) inspections. If 
left uncorrected, such corrosion could adversely affect the 
structural integrity of the wing to fuselage joint.
    For this reason, this Airworthiness Directive (AD) requires 
repetitive detailed visual inspections at the forward and aft wing 
links and wing link attachment bolts for signs of corrosion, 
replacement of corroded nuts and bolts and repair of any defects.

    The MRBR and CPCP will be amended to include the repeat 
inspections.

Actions and Compliance

    (f) Unless already done, do the following actions: Before 
accumulating 48 months on the wing link since new, or within 48 
months of a wing link being repaired in accordance with a BAE 
Systems (Operations) Ltd. or EASA approved repair scheme, or within 
24 months after the effective date of this AD, whichever occurs 
latest, and thereafter at intervals not to exceed 48 months, inspect 
the wing links in accordance with paragraph 2.C. of BAE Systems 
(Operations) Ltd. Inspection Service Bulletin ISB.53-203, dated May 
7, 2007.
    (1) If any corrosion is found on bolts or nuts, replace the 
affected bolts and nuts with airworthy parts before next flight in 
accordance with the service bulletin.
    (2) If any corrosion to the wing links is found during an 
inspection, repair before further flight in accordance with a method 
approved in accordance with EASA (or its delegated agent).

FAA AD Differences

    Note 1: This AD differs from the MCAI and/or service information 
as follows: No differences.

Other FAA AD Provisions

    (g) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Branch, ANM-114, FAA, has the authority to approve 
AMOCs for this AD, if requested using the procedures found in 14 CFR 
39.19. Send information to ATTN: Todd Thompson, Aerospace Engineer, 
Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, 
Washington 98057-3356; telephone (425) 227-1175; fax (425) 227-1149. 
Before using any approved AMOC on any airplane to which the AMOC 
applies, notify your appropriate principal inspector (PI) in the

[[Page 64899]]

FAA Flight Standards District Office (FSDO), or lacking a PI, your 
local FSDO.
    (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.
    (3) Reporting Requirements: For any reporting requirement in 
this AD, under the provisions of the Paperwork Reduction Act, the 
Office of Management and Budget (OMB) has approved the information 
collection requirements and has assigned OMB Control Number 2120-
0056.

Related Information

    (h) Refer to MCAI EASA Airworthiness Directive 2007-0303, dated 
December 14, 2007, and BAE Systems (Operations) Limited Inspection 
Service Bulletin ISB.53-203, dated May 7, 2007, for related 
information.

    Issued in Renton, Washington, on October 20, 2008.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E8-25999 Filed 10-30-08; 8:45 am]

BILLING CODE 4910-13-P
