Airworthiness Directives; BAE Systems (Operations) Limited Model ATP Airplanes; BAE Systems (Operations) Limited Model HS 748 Airplanes

[Federal Register Volume 76, Number 47 (Thursday, March 10, 2011)]
[Rules and Regulations]
[Pages 13069-13072]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-5115]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0150; Directorate Identifier 2010-NM-100-AD; 
Amendment 39-16619; AD 2011-05-10]
RIN 2120-AA64


Airworthiness Directives; BAE Systems (Operations) Limited Model 
ATP Airplanes; BAE Systems (Operations) Limited Model HS 748 Airplanes

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

ACTION: Final rule; request for comments.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for the 
products listed above. This 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:
* * * * *
    Recently, during a walk round check, an operator found an 
aileron trim tab hinge pin that had migrated sufficiently to cause a 
rubbing foul on the flap. Other reports indicate that, for the 
purposes of expediency, it has become common practice during 
maintenance when replacing a control tab, instead of unbolting the 
forward part of the piano hinge from the primary control surface, 
the hinge pins are punched out of the hinges. Investigations have 
concluded that, after reinserting the pins after maintenance, the 
ends of the hinges may not have been pinched, which is likely to 
have been the cause of the detected hinge pin migration.
    This condition [non-pinched hinge pin ends], if not detected and 
corrected, could lead to further incidents of migration of a tab

[[Page 13070]]

hinge pin out of the hinge, likely resulting in restricted movement 
of the tab control and consequent reduced control of the aeroplane.

    This AD requires actions that are intended to address the unsafe 
condition described in the MCAI.

DATES: This AD becomes effective March 25, 2011.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of March 25, 
2011.
    We must receive comments on this AD by April 25, 2011.

ADDRESSES: You may send comments by any of the following methods:
    <bullet> Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
    <bullet> Fax: (202) 493-2251.
    <bullet> 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.
    <bullet> 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 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; phone: 425-227-
1175; fax: 425-227-1149.

SUPPLEMENTARY INFORMATION: 

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 2010-0035, dated March 4, 2010 (referred to 
after this as ``the MCAI''), to correct an unsafe condition for the 
specified products. The MCAI states:

    Early in the life of the ATP (circa 1989), a report was received 
that a control surface hinge pin had migrated out of position, 
causing a rubbing contact. BAE Systems responded by issuing SB ATP-
27-11, describing a one-time inspection of the hinge pins, which was 
classified mandatory by UK CAA AD 006-06-89. Both SB and AD were 
subsequently cancelled in 1990. The HS.748 and the ATP secondary 
controls are similar in these areas, although no action was taken on 
the HS.748 fleet at that time.
    Recently, during a walk round check, an operator found an 
aileron trim tab hinge pin that had migrated sufficiently to cause a 
rubbing foul on the flap. Other reports indicate that, for the 
purposes of expediency, it has become common practice during 
maintenance when replacing a control tab, instead of unbolting the 
forward part of the piano hinge from the primary control surface, 
the hinge pins are punched out of the hinges.
    Investigations have concluded that, after reinserting the pins 
after maintenance, the ends of the hinges may not have been pinched, 
which is likely to have been the cause of the detected hinge pin 
migration.
    This condition [non-pinched hinge pin ends], if not detected and 
corrected, could lead to further incidents of migration of a tab 
hinge pin out of the hinge, likely resulting in restricted movement 
of the tab control and consequent reduced control of the aeroplane.
    For the reasons described above, this AD requires the [detailed] 
inspection of aileron and rudder tab piano hinge pins [for length 
and end pinching] and, depending on findings, the necessary 
corrective actions.

Corrective actions include cutting the hinge pin to specified size, and 
pinching the piano hinge ends sufficient to prevent the piano hinge pin 
from migrating from the piano hinge. You may obtain further information 
by examining the MCAI in the AD docket.

Relevant Service Information

    BAE Systems (Operations) Limited has issued Service Bulletin ATP-
27-090, dated April 14, 2009; and Service Bulletin HS748-27-136, dated 
April 14, 2009. 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 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 issuing this AD because we 
evaluated all pertinent information and determined the unsafe condition 
exists and is likely to exist or develop on other products of the same 
type design.
    There are no products of this type currently registered in the 
United States. However, this rule is necessary to ensure that the 
described unsafe condition is addressed if any of these products are 
placed on the U.S. Register in the future.

Differences Between the 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 required 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 AD.

FAA's Determination of the Effective Date

    Since there are currently no domestic operators of this product, 
notice and opportunity for public comment before issuing this AD are 
unnecessary.

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety, and we did not precede it by notice and opportunity for public 
comment. We invite you to send any written relevant data, views, or 
arguments about this AD. Send your comments to an address listed under 
the ADDRESSES section. Include ``Docket No. FAA-2011-0150; Directorate 
Identifier 2010-NM-100-AD'' at the beginning of your comments. We 
specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this AD. We will consider all 
comments received by the closing date and may amend this 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 AD.

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.

[[Page 13071]]

    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 AD will not have federalism implications 
under Executive Order 13132. This AD will 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 AD:
    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 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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new AD:

2011-05-10 BAE Systems (Operations) Limited: Amendment 39-16619. 
Docket No. FAA-2011-0150; Directorate Identifier 2010-NM-100-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective March 
25, 2011.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all BAE Systems (Operations) Limited 
Model ATP airplanes and BAE Systems (Operations) Limited Model HS 
748 series 2A and series 2B airplanes; certificated in any category.

Subject

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

Reason

    (e) The mandatory continued airworthiness information (MCAI) 
states:
* * * * *
    Recently, during a walk round check, an operator found an 
aileron trim tab hinge pin that had migrated sufficiently to cause a 
rubbing foul on the flap. Other reports indicate that, for the 
purposes of expediency, it has become common practice during 
maintenance when replacing a control tab, instead of unbolting the 
forward part of the piano hinge from the primary control surface, 
the hinge pins are punched out of the hinges. Investigations have 
concluded that, after reinserting the pins after maintenance, the 
ends of the hinges may not have been pinched, which is likely to 
have been the cause of the detected hinge pin migration.
    This condition [non-pinched hinge pin ends], if not detected and 
corrected, could lead to further incidents of migration of a tab 
hinge pin out of the hinge, likely resulting in restricted movement 
of the tab control and consequent reduced control of the aeroplane.

Compliance

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

Inspection and Corrective Action

    (g) Within 90 days after the effective date of this AD: Do a 
detailed inspection of the aileron and rudder tab piano hinge pins 
to determine that each piano hinge pin is 0.120 inch (3.00 mm) 
shorter than the piano hinge at each end; and that the piano hinge 
ends have been pinched sufficiently to prevent the piano hinge 
migrating from the piano hinge, in accordance with the 
Accomplishment Instructions of BAE Systems (Operations) Limited 
Service Bulletin ATP-27-090, dated April 14, 2009; or BAE Systems 
(Operations) Limited Service Bulletin HS748-27-136, dated April 14, 
2009, as applicable.
    (1) If any piano hinge pin is not 0.120 inch (3.00 mm) shorter 
than the piano hinge at each end, before further flight, cut to 
size, in accordance with Accomplishment Instructions of BAE Systems 
(Operations) Limited Service Bulletin ATP-27-090, dated April 14, 
2009; or BAE Systems (Operations) Limited Service Bulletin HS748-27-
136, dated April 14, 2009; as applicable.
    (2) If any piano hinge pin is not pinched sufficiently to 
prevent the piano hinge migrating from the piano hinge, before 
further flight, pinch the hinge, in accordance with Accomplishment 
Instructions of BAE Systems (Operations) Limited Service Bulletin 
ATP-27-090, dated April 14, 2009; or BAE Systems (Operations) 
Limited Service Bulletin HS748-27-136, dated April 14, 2009; as 
applicable.

FAA AD Differences

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

Other FAA AD Provisions

    (h) The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, 
International Branch, ANM-116, Transport Airplane Directorate, 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, International Branch, ANM-116, 
Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, 
Washington 98057-3356; phone: 425-227-1175; fax: 425-227-1149. 
Information may be e-mailed to: [email protected]. 
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.

Related Information

    (i) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) EASA Airworthiness Directive 2010-0035, dated March 04, 2010; 
BAE Systems (Operations) Limited Service Bulletin ATP-27-090, dated 
April 14, 2009; and BAE Systems (Operations) Limited Service 
Bulletin HS748-27-136, dated April 14, 2009; for related 
information.

Material Incorporated by Reference

    (j) You must use BAE Systems (Operations) Limited Service 
Bulletin ATP-27-090, dated April 14, 2009; or BAE Systems 
(Operations) Limited Service Bulletin HS748-27-136, dated April 14, 
2009; as applicable; to do the actions required by this AD, unless 
the AD specifies otherwise.
    (1) The Director of the Federal Register approved the 
incorporation by reference of this service information under 5 
U.S.C. 552(a) and 1 CFR part 51.
    (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

[[Page 13072]]

675704; e-mail [email protected]; Internet http://www.baesystems.com/Businesses/RegionalAircraft/index.htm.
    (3) You may review copies of the 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.
    (4) You may also review copies of the service information that 
is incorporated by reference at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

    Issued in Renton, Washington, on February 22, 2011.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2011-5115 Filed 3-9-11; 8:45 am]
BILLING CODE 4910-13-P

The complete text was extracted from the official GovInfo HTML edition for this publication. Acquired 2026-10-09T03:10:16.678382+00:00. Text extraction preserves the recorded source wording; it does not determine current requirements.

Open the captured official edition

Source SHA-256

9e35907ec9c7b36062de0f94eae59783717dde27a83a1cacc4257fe32288b649

Text SHA-256

959de674c3b0520002fe2a40116c11e6ae5cc4537c6870310d4914ac3f14d148