

[Federal Register: November 27, 2007 (Volume 72, Number 227)]
[Proposed Rules]               
[Page 66087-66089]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27no07-37]                         

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2007-0248; Directorate Identifier 2007-CE-084-AD]
RIN 2120-AA64

 
Airworthiness Directives; British Aerospace Aircraft Group, 
Scottish Division, Model Beagle B.121 Series 1, 2, 3 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:

    The Type Certificate Holder (TCH) has received several reports 
of failed Rudder torque tube assemblies. The torque tube assemblies 
are subject to repetitive inspection in accordance Airworthiness 
Directive 2060 PRE 80. The recent failures occurred in service after 
the inspections required by AD 2060 PRE 80 had been performed. In 
the event of such failures, loss of directional control through both 
the Rudder and Nosewheel Steering may occur. The TCH has also 
received reports of loose rivets attaching the inboard Anchor 
Assembly to the Starboard Torque Tube.

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 27, 
2007.

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 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.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments

[[Page 66088]]

to an address listed under the ADDRESSES section. Include ``Docket No. 
FAA-2007-****; Directorate Identifier 2007-CE-084-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 United Kingdom Civil Aviation Authority, which is the aviation 
authority for United Kingdom, has issued AD No: G-2005-0030, dated 
October 12, 2005 (referred to after this as ``the MCAI''), to correct 
an unsafe condition for the specified products. The MCAI states:

    The Type Certificate Holder (TCH) has received several reports 
of failed Rudder torque tube assemblies. The torque tube assemblies 
are subject to repetitive inspection in accordance Airworthiness 
Directive 2060 PRE 80. The recent failures occurred in service after 
the inspections required by AD 2060 PRE 80 had been performed. In 
the event of such failures, loss of directional control through both 
the Rudder and Nosewheel Steering may occur. The TCH has also 
received reports of loose rivets attaching the inboard Anchor 
Assembly to the Starboard Torque Tube.

    The MCAI requires the inspection of the rudder torque tube 
assemblies and hubs for cracking and loose rivets with conditional 
correction or replacement following de Havilland Support Limited 
Service Bulletin B121/65, Issue 2, dated August 10, 2005.
    You may obtain further information by examining the MCAI in the AD 
docket.

Relevant Service Information

    De Havilland Support Limited has issued Service Bulletin No. B121/
65, Issue 2, dated August 10, 2005. 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

    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 1 work-hour 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 $80, or $80 per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 12 work-hours and require parts costing $10,000 for a cost 
of $10,960 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 this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, 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 (Scotland): Docket No. FAA-2007-0248; Directorate 
Identifier 2007-CE-084-AD.

Comments Due Date

    (a) We must receive comments by December 27, 2007.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Beagle B.121 Series 1, 2, 3 airplanes, 
all serial numbers, certificated in any category.

Subject

    (d) Air Transport Association of America (ATA) Code 27: Flight 
Controls.

[[Page 66089]]

Reason

    (e) The mandatory continuing airworthiness information (MCAI) 
states:
    The Type Certificate Holder (TCH) has received several reports 
of failed Rudder torque tube assemblies. The torque tube assemblies 
are subject to repetitive inspection in accordance Airworthiness 
Directive 2060 PRE 80. The recent failures occurred in service after 
the inspections required by AD 2060 PRE 80 had been performed. In 
the event of such failures, loss of directional control through both 
the Rudder and Nosewheel Steering may occur. The TCH has also 
received reports of loose rivets attaching the inboard Anchor 
Assembly to the Starboard Torque Tube.

The MCAI requires the inspection of the rudder torque tube 
assemblies and hubs for cracking and loose rivets with conditional 
correction or replacement in accordance with de Havilland Support 
Limited Service Bulletin B121/65, Issue 2, dated August 10, 2005.

Actions and Compliance

    (f) Unless already done, do the following actions:
    (1) Within 100 hours time-in-service (TIS) after the effective 
date of this AD and thereafter at intervals not to exceed 100 hours 
TIS, inspect the Rudder Torque Tube Assemblies following de 
Havilland Support Limited Service Bulletin B121/65, Issue 2, dated 
August 10, 2005.
    (2) Before further flight, replace any cracked Rudder Torque 
Tube Assemblies and correct any loose rivets in the Rudder Torque 
Tube Assemblies that are found in the inspections required in 
paragraph (f)(1) of this AD, following de Havilland Support Limited 
Service Bulletin B121/65, Issue 2, dated August 10, 2005.
    (3) After the effective date of this AD, used rudder torque 
assemblies held as spares for British Aerospace Aircraft Group, 
Scottish Division, Model Beagle B.121 Series 1, 2, 3 airplanes must 
be inspected following de Havilland Support Limited Service Bulletin 
B121/65, Issue 2, dated August 10, 2005, and found free of cracks 
prior to installation.

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. 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 United Kingdom Civil Aviation Authority AD No: 
G-2005-0030, dated October 12, 2005; and de Havilland Support 
Limited Service Bulletin B121/65, Issue 2, dated August 10, 2005, 
for related information.

    Issued in Kansas City, Missouri, on November 20, 2007.
Kim Smith,
Manager, Small Airplane Directorate, Aircraft Certification Service.
 [FR Doc. E7-23025 Filed 11-26-07; 8:45 am]

BILLING CODE 4910-13-P
