
[Federal Register: September 27, 2010 (Volume 75, Number 186)]
[Proposed Rules]               
[Page 59170-59172]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27se10-38]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0942; Directorate Identifier 2010-CE-049-AD]
RIN 2120-AA64

 
Airworthiness Directives; British Aerospace Regional Aircraft 
Models Jetstream Series 3101 and Jetstream Model 3201 Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (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:

    As a result of the fatigue-testing programme on the Jetstream 
fatigue test specimen, it has been identified that failure of the 
undercarriage jack mounting shaft assembly can occur.
    This condition, if not corrected, could lead to a Main Landing 
Gear (MLG) collapse on the ground or during landing and consequently 
damage to the aeroplane or injury to the occupants.

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 November 12, 
2010.

ADDRESSES: You may send comments by any of the following methods:

[[Page 59171]]

     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 20590, 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 Management Facility 
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 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: Taylor Martin, Aerospace Engineer, 
FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: (816) 329-4138; fax: (816) 329-4090; e-mail: 
taylor.martin@faa.gov.

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-2010-0942; 
Directorate Identifier 2010-CE-049-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 because of 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 AD 
No.: 2010-0162, dated August 4, 2010 (referred to after this as ``the 
MCAI''), to correct an unsafe condition for the specified products. The 
MCAI states:

    As a result of the fatigue-testing programme on the Jetstream 
fatigue test specimen, it has been identified that failure of the 
undercarriage jack mounting shaft assembly can occur.
    This condition, if not corrected, could lead to a Main Landing 
Gear (MLG) collapse on the ground or during landing and consequently 
damage to the aeroplane or injury to the occupants.
    BAE SYSTEMS have now defined safe life limits for these 
components.
    For the reasons described above, this AD requires the 
application of safe life limits to these components.

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

Relevant Service Information

    BAE Systems has issued British Aerospace Jetstream Series 3100 & 
3200 Service Bulletin 05-JA090143, dated April 30, 2009; and British 
Aerospace Regional Aircraft has issued British Aerospace Jetstream 
Series 3100 & 3200 Service Bulletin 32-JA990142, dated March 26,1999. 
The actions described in this service information are intended to 
correct the unsafe condition identified in the MCAI.

FAA's Determination and Requirements of the 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 this State of Design Authority, they 
have notified us of the unsafe condition described in the MCAI and 
service information referenced above. We are proposing this AD because 
we evaluated all information and determined the unsafe condition exists 
and is likely to exist or develop on other products of the same type 
design.

Differences Between This Proposed 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

    We estimate that this proposed AD will affect 80 products of U.S. 
registry. We also estimate that it would take about 15 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 $10,000 per product.
    Based on these figures, we estimate the cost of the proposed AD on 
U.S. operators to be $902,000, or $11,275 per product.

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

[[Page 59172]]

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:

British Aerospace Regional Aircraft: Docket No. FAA-2010-0942; 
Directorate Identifier 2010-CE-049-AD.

Comments Due Date

    (a) We must receive comments by November 12, 2010.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to British Aerospace Regional Aircraft 
Models Jetstream Series 3101 and Jetstream Model 3201 airplanes, all 
serial numbers, certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 32: Landing 
Gear.

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:

    As a result of the fatigue-testing programme on the Jetstream 
fatigue test specimen, it has been identified that failure of the 
undercarriage jack mounting shaft assembly can occur.
    This condition, if not corrected, could lead to a Main Landing 
Gear (MLG) collapse on the ground or during landing and consequently 
damage to the aeroplane or injury to the occupants.
    BAE SYSTEMS have now defined safe life limits for these 
components.
    For the reasons described above, this AD requires the 
application of safe life limits to these components.

Actions and Compliance

    (f) Unless already done, do the following actions:
    (1) Within 30 days after the effective date of this AD, 
establish the number of landings accumulated since installation of 
each left and right main landing gear radius rod mounting shaft 
assemblies following paragraph 2.(A) of BAE Systems British 
Aerospace Jetstream Series 3100 & 3200 Service Bulletin 05-JA090143, 
dated April 30, 2009.
    (2) Replace the left and right main landing gear radius rod 
mounting shaft assembly with an airworthy assembly following British 
Aerospace Jetstream Series 3100 & 3200 Service Bulletin 32-JA990142, 
dated March 26, 1999, within the following:
    (i) For Model Jetstream Series 3101: Within 38,220 total 
landings accumulated on each main landing gear radius rod mounting 
shaft assembly or within 1,000 landings after the effective date of 
this AD, whichever occurs later; and
    (ii) For Model Jetstream Model 3201: Within 31,038 total 
landings accumulated on each main landing gear radius rod mounting 
shaft assembly or within 1,000 landings after the effective date of 
this AD, whichever occurs later.
    (3) After replacing each main landing gear radius rod mounting 
shaft assembly as required by paragraph (f)(2) of this AD, 
repetitively thereafter replace each assembly with an airworthy 
assembly at intervals not to exceed the following life limits:
    (i) For Model Jetstream Series 3101: Within 38,220 total 
landings; and
    (ii) For Model Jetstream Model 3201: Within 31,038 total 
landings.
    (4) For operators that do not have landing records, determine 
the number of landings by multiplying the number of hours time-in-
service (TIS) accumulated on each main landing gear radius rod 
mounting shaft assembly by 0.75. For the purpose of this AD:
    (i) 1,000 landings equals 1,333 hours TIS;
    (ii) 31,038 landings equals 41,384 hours TIS; and
    (ii) 38,220 landings equals 50,960 hours TIS.
    (5) Compliance with the life limits set in paragraph (f)(3) of 
this AD may be done by incorporating these limits into the 
limitations section of the aircraft maintenance manual. You may do 
this by inserting a copy of this AD into the limitations section of 
aircraft maintenance manual.

FAA AD Differences

    Note:  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, 
Standards Office, 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: Taylor Martin, Aerospace Engineer, FAA, Small 
Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 
64106; telephone: (816) 329-4138; fax: (816) 329-4090; e-mail: 
taylor.martin@faa.gov. Before using any approved AMOC on any 
airplane to which the AMOC applies, notify your appropriate 
principal inspector (PI) in the 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 (44 
U.S.C. 3501 et seq.), 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 European Aviation Safety Agency (EASA) AD No.: 
2010-0162, dated August 4, 2010; BAE Systems British Aerospace 
Jetstream Series 3100 & 3200 Service Bulletin 05-JA090143, dated 
April 30, 2009; and British Aerospace Regional Aircraft British 
Aerospace Jetstream Series 3100 & 3200 Service Bulletin 32-JA990142, 
dated March 26, 1999, for related information.

    Issued in Kansas City, Missouri, on September 21, 2010.
Patrick R. Mullen,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2010-24180 Filed 9-24-10; 8:45 am]
BILLING CODE 4910-13-P

