[Federal Register Volume 77, Number 40 (Wednesday, February 29, 2012)]
[Rules and Regulations]
[Pages 12166-12170]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2012-4428]



[[Page 12166]]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-1311; Directorate Identifier 2009-NM-229-AD; 
Amendment 39-16938; AD 2012-02-15]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are superseding an existing airworthiness directive (AD) 
for certain Model 757-200, -200PF, -200CB, and -300 series airplanes. 
That AD currently requires inspecting certain power feeder wire bundles 
for damage, inspecting the support clamps for these wire bundles to 
determine whether the clamps are properly installed, and performing 
corrective actions if necessary. This new AD requires additional 
inspections for certain airplanes. This AD was prompted by a report 
that a power feeder wire bundle chafed against the number six auxiliary 
slat track, causing electrical wires in the bundle to arc, which 
damaged both the auxiliary slat track and power feeder wires. We are 
issuing this AD to prevent arcing that could be a possible ignition 
source for leaked flammable fluids, which could result in a fire. 
Arcing could also result in a loss of power from the generator 
connected to the power feeder wire bundle, and consequent loss of 
systems, which could reduce controllability of the airplane.

DATES: This AD is effective April 4, 2012.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of April 4, 2012.

ADDRESSES: For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1; fax 206-766-5680; email [email protected]; 
Internet https://www.myboeingfleet.com. 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 Management Facility 
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 address for the 
Docket Office (phone: 800-647-5527) is Document Management Facility, 
U.S. Department of Transportation, Docket Operations, M-30, West 
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Marie Hogestad, Aerospace Engineer, 
Systems and Equipment Branch, ANM-130S, FAA, Seattle Aircraft 
Certification Office (ACO), 1601 Lind Avenue SW., Renton, Washington 
98057-3356; phone: 425-917-6418; fax: 425-917-6590; email: 
[email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2007-03-01, amendment 39-14912 (72 FR 3939, 
January 29, 2007). That AD applies to the specified products. The NPRM 
was published in the Federal Register on January 18, 2011 (76 FR 2848). 
That NPRM proposed to continue to require inspecting certain power 
feeder wire bundles for damage, inspecting the support clamps for those 
wire bundles to determine whether the clamps are properly installed, 
and performing corrective actions if necessary. That NPRM also proposed 
to require additional inspections for certain airplanes.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the proposal 
and the FAA's response to each comment.

Requests To Correct Figure Reference in Paragraph (i) of the NPRM (76 
FR 2848, January 18, 2011)

    United Airlines and American Airlines requested that paragraph (i) 
of the NPRM (76 FR 2848, January 18, 2011) be changed to reference 
Figure 1 rather than Figure 3 of Boeing Special Attention Service 
Bulletin 757-24-0105, Revision 5, dated July 30, 2009. Boeing Special 
Attention Service Bulletin 757-24-0105, Revision 5, dated July 30, 
2009, has a typographical error referencing the incorrect figure. 
United Airlines also requested that the NPRM refer to Boeing 
Information Notice 757-24-0105 IN 03, dated August 19, 2009. United 
Airlines stated that Boeing Information Notice 757-24-0105 IN 03, dated 
August 19, 2009, was issued to notify operators of this error.
    We agree to revise paragraph (i) of this AD to refer to Figure 1 of 
Boeing Special Attention Service Bulletin 757-24-0105, Revision 5, 
dated July 30, 2009. We have confirmed that the correct figure is 
Figure 1; therefore, we have revised paragraph (i) of this AD to refer 
to Figure 1 of Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009. We have not revised paragraph (i) of 
this AD to refer to Boeing Information Notice 757-24-0105 IN 03, dated 
August 19, 2009, because we revised that paragraph to refer to the 
correct figure.

Request To Add Inspection To Determine Airplane Configuration

    American Airlines requested that the NPRM (76 FR 2848, January 18, 
2011) be revised to include an inspection to determine if the airplane 
has one or two attach brackets on the left wing prior to accomplishing 
the required rework. American Airlines stated that Group 2 airplanes 
were moved to Group 1 in Boeing Special Attention Service Bulletin 757-
24-0105, Revision 5, dated July 30, 2009, because some airplanes have 
two attach brackets on the left wing, similar to earlier Group 1 
airplanes identified in previous revisions of that service bulletin. 
American Airlines stated that the NPRM does not contain a step to 
determine the airplane configuration before the rework.
    We disagree with adding an inspection to determine the airplane 
configuration; however, we agree to clarify paragraph (i) of this AD. 
Therefore, we have revised paragraph (i) of this AD to specify the 
affected airplanes on which the actions are required by that paragraph.

Request To Clarify Affected Airplanes in Paragraph (i) of the NPRM (76 
FR 2848, January 18, 2011)

    United Airlines requested that a statement be added to clarify that 
the new requirement specified in paragraph (i) of the NPRM (76 FR 2848, 
January 18, 2011) is only applicable to airplanes with upper and lower 
brackets installed in the left wing (Group 1, Configuration 1 
airplanes), as defined in Boeing Special Attention Service Bulletin 
757-24-0105, Revision 5, dated July 30, 2009. United Airlines stated 
that the NPRM is unclear regarding which

[[Page 12167]]

airplanes are affected by the new requirements.
    We agree that clarification is needed. Airplanes in Group 1, as 
specified in Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009, could be in the configuration shown in 
Figure 1 (Configuration 1 with two attach brackets on the left wing) or 
Figure 3 (Configuration 2 with one attach bracket on the left wing). 
Therefore, as stated previously, we have clarified paragraph (i) of 
this AD to specify the affected airplanes.

Request To Provide Credit for Previous Work Done Using Boeing Special 
Attention Service Bulletin 757-24-0105, Revision 5, Dated July 30, 2009

    European Air Transport, a company of DHL, requested that we revise 
the NPRM (76 FR 2848, January 18, 2011) to provide credit to operators 
that have accomplished inspections and corrective actions prior to the 
effective date of this AD in accordance with Boeing Special Attention 
Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009. European 
Air Transport pointed out that the NPRM provides credit for actions 
accomplished using previous revisions of Boeing Special Attention 
Service Bulletin 757-24-0106, which is applicable to Model 757-300 
airplanes.
    We agree that inspections and corrective actions done before the 
effective date of this AD in accordance with Boeing Special Attention 
Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009, are 
acceptable for accomplishing the applicable actions specified in this 
AD. However, operators may always accomplish the actions in an AD using 
the required service information at any time before the effective date 
of the AD, as allowed by the phrase ``unless the actions have already 
been done.'' Therefore, because these actions are not required to be 
repeated, it is unnecessary to provide specific credit for these 
actions. We have made no change to the AD in this regard.

Additional Changes to Final Rule

    We have revised the headings of Tables 1, 2, 3, 4, and 5 of this AD 
to clarify the purpose of the content in those tables.
    We have included headings for paragraphs (i) and (j) of this AD to 
clarify the purpose of the content in those paragraphs.
    Boeing Special Attention Service Bulletin 757-24-0105, Revision 3, 
dated October 3, 2006; and Revision 4, dated January 4, 2008; have been 
added to Table 5, ``Previous Service Information for Paragraph (g) of 
this AD,'' of this AD.
    We have also revised the headings for and wording in paragraphs (h) 
and (k) of this AD; these changes have not changed the intent of these 
paragraphs.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
the AD with the changes described previously and minor editorial 
changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM (76 FR 2848, January 18, 2011) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM (76 FR 2848, January 18, 2011).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of the AD.

Costs of Compliance

    We estimate that this AD affects 683 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                           Average
                                  Work      labor                   Cost per     Number of U.S.-
            Action               hours     rate per    Parts        airplane       registered       Fleet cost
                                             hour                                   airplanes
----------------------------------------------------------------------------------------------------------------
Inspection (required by AD             2        $85         $0  $170 per                    683  $116,110 per
 2007-03-01, Amendment 39-                                       inspection                       inspection
 14912 (72 FR 3939, January                                      cycle.                           cycle.
 29, 2007)).
Inspection for certain Group           5         85          0  $425 per                    646  $274,550 per
 1 Model 757-200, -200CB, -                                      inspection                       inspection
 200PF series airplanes (new                                     cycle.                           cycle.
 action).
Inspections for Model 757-300          4         85          0  $340 per                     37  $12,580 per
 series airplanes (new                                           inspection                       inspection
 action).                                                        cycle.                           cycle.
----------------------------------------------------------------------------------------------------------------

    We have received no definitive data that would enable us to provide 
a cost estimate for the on-condition actions specified in 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.
    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 have 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 that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,

[[Page 12168]]

    (2) Is not a ``significant rule'' under 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.

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 removing airworthiness directive (AD) 
2007-03-01, Amendment 39-14912 (72 FR 3939, January 29, 2007), and 
adding the following new AD:

2012-02-15 The Boeing Company: Amendment 39-16938; Docket No. FAA-
2010-1311; Directorate Identifier 2009-NM-229-AD.

(a) Effective Date

    This airworthiness directive (AD) is effective April 4, 2012.

(b) Affected ADs

    This AD supersedes AD 2007-03-01, Amendment 39-14912 (72 FR 
3939, January 29, 2007).

(c) Applicability

    This AD applies to The Boeing Company Model 757-200, -200PF, -
200CB, and -300 series airplanes, certificated in any category, 
specified in paragraphs (c)(1) and (c)(2) of this AD.
    (1) Model 757-200, -200PF, and -200CB series airplanes, as 
identified in Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009.
    (2) Model 757-300 series airplanes, as identified in Boeing 
Special Attention Service Bulletin 757-24-0106, Revision 5, dated 
July 30, 2009.

(d) Subject

    Air Transport Association (ATA) of America Code 24: Electrical 
power.

(e) Unsafe Condition

    This AD results from a report that a power feeder wire bundle 
chafed against the number six auxiliary slat track, causing 
electrical wires in the bundle to arc, which damaged both the 
auxiliary slat track and power feeder wires. The Federal Aviation 
Administration is issuing this AD to prevent arcing that could be a 
possible ignition source for leaked flammable fluids, which could 
result in a fire. Arcing could also result in a loss of power from 
the generator connected to the power feeder wire bundle, and 
consequent loss of systems, which could reduce controllability of 
the airplane.

(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) Restatement of Requirements of AD 2007-03-01, Amendment 39-14912 
(72 FR 3939, January 29, 2007), With Revised Service Information and 
Affected Airplane Groups: One-Time Inspections and Corrective Actions

    For Model 757-200, -200PF, and -200CB series airplanes 
identified in Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009; and for Model 757-300 series 
airplanes identified as Group 1 airplanes in Boeing Special 
Attention Service Bulletin 757-24-0106, Revision 5, dated July 30, 
2009: Within 24 months after March 5, 2007 (the effective date for 
AD 2007-03-01, Amendment 39-14912 (72 FR 3939, January 29, 2007)), 
perform a general visual inspection for damage (including but not 
limited to chafing) of power feeder wire bundles W3312 and W3412 at 
front spar station 148.90 in the left and right wings, and a general 
visual inspection of the support clamps for those power feeder wire 
bundles to determine whether the clamps are properly installed, and, 
before further flight, do all applicable corrective actions. Do 
these actions by doing all of the applicable actions in accordance 
with the Accomplishment Instructions of the applicable service 
bulletin identified in Table 1 of this AD. After the effective date 
of this AD, only Boeing Special Attention Service Bulletin 757-24-
0105, Revision 5, dated July 30, 2009 (for Model 757-200, -200CB, 
and -200PF series airplanes); or Boeing Special Attention Service 
Bulletin 757-24-0106, Revision 5, dated July 30, 2009 (for Model 
757-300 series airplanes); may be used.

                      Table 1--Acceptable Service Information for Paragraph (g) of This AD
----------------------------------------------------------------------------------------------------------------
                                           Boeing Special
                                              Attention
                 Model--                       Service        Revision--                   Dated--
                                             Bulletin--
----------------------------------------------------------------------------------------------------------------
757-200, -200CB, and -200PF series             757-24-0105               2  April 20, 2006.
 airplanes.
757-200, -200CB, and -200PF series             757-24-0105               5  July 30, 2009.
 airplanes.
757-300 series airplanes................       757-24-0106               2  April 20, 2006.
757-300 series airplanes................       757-24-0106               5  July 30, 2009.
----------------------------------------------------------------------------------------------------------------

(h) Restatement of Requirements of AD 2007-03-01, Amendment 39-14912 
(72 FR 3939, January 29, 2007): Credit for Previous Actions

    This paragraph provides credit for inspections and corrective 
actions, as required by paragraph (g) of this AD, if those actions 
were performed before March 5, 2007 (the effective date for AD 2007-
03-01, Amendment 39-14912 (72 FR 3939, January 29, 2007)), using the 
service information listed in Table 2 of this AD.

      Table 2--Other Acceptable Service Information for Previously
            Accomplished Actions in Paragraph (g) of This AD
------------------------------------------------------------------------
   Boeing Special Attention
      Service Bulletin--         Revision--             Dated--
------------------------------------------------------------------------
757-24-0105..................  ..............  September 30, 2004.
757-24-0105..................               1  June 23, 2005.
757-24-0106..................  ..............  September 30, 2004.
757-24-0106..................               1  June 23, 2005.
------------------------------------------------------------------------


[[Page 12169]]

(i) New Requirements of This AD: Additional Work for Model 757-200, -
200CB, and -200PF Series Airplanes Identified in Boeing Special 
Attention Service Bulletin 757-24-0105, Revision 5, Dated July 30, 2009

    For Model 757-200, -200CB, and -200PF series airplanes 
identified as Group 1, Configuration 1 airplanes, in Boeing Special 
Attention Service Bulletin 757-24-0105, Revision 5, dated July 30, 
2009, on which inspections have been done before the effective date 
of this AD in accordance with any service bulletin specified in 
Table 3 of this AD: Within 24 months after the effective date of 
this AD, do a general visual inspection to determine if the clamp is 
installed on the lower bracket on the left wing, in accordance with 
Figure 1 of Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009. If the clamp is missing, before 
further flight, install a clamp on the lower bracket on the left 
wing, in accordance with Figure 1 of Boeing Special Attention 
Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009.

  Table 3--Service Information for Previously Accomplished Actions for
           Model 757-200, -200CB, and -200PF Series Airplanes
------------------------------------------------------------------------
   Boeing Special Attention
      Service Bulletin--         Revision--             Dated--
------------------------------------------------------------------------
757-24-0105..................  ..............  September 30, 2004.
757-24-0105..................               1  June 23, 2005.
757-24-0105..................               2  April 20, 2006.
757-24-0105..................               3  October 3, 2006.
757-24-0105..................               4  January 4, 2008.
------------------------------------------------------------------------

(j) New Requirements of This AD: Additional Work for Model 757-300 
Series Airplanes Identified in Boeing Special Attention Service 
Bulletin 757-24-0106, Revision 5, Dated July 30, 2009

    For Model 757-300 series airplanes in Group 2, as identified in 
Boeing Special Attention Service Bulletin 757-24-0106, Revision 5, 
dated July 30, 2009: Within 24 months after the effective date of 
this AD, perform a general visual inspection for damage (including, 
but not limited to chafing) of power feeder wire bundles W5784 and 
W5786 at front spar station 148.90 in the left and right wings, and 
a general visual inspection of the support clamps for those power 
feeder wire bundles to determine if the clamps are properly 
installed, and, before further flight, do all applicable corrective 
actions. Do all applicable actions in accordance with the 
Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 757-24-0106, Revision 5, dated July 30, 2009.

(k) New Requirements of This AD: Credit for Previous Actions

    (1) This paragraph provides credit for inspections and 
corrective actions, as required by paragraph (j) of this AD, if 
those actions were performed before the effective date of this AD 
using Boeing Special Attention Service Bulletin 757-24-0106, 
Revision 4, dated January 4, 2008.
    (2) This paragraph provides credit for inspections and 
corrective actions, as required by paragraph (j) of this AD, if 
those actions were performed before the effective date of this AD 
using the service information listed in table 4 of this, provided 
that power feeder wire bundles W5784 and W5786 were inspected and 
all applicable correction actions were done.

   Table 4--Previous Service Information for Paragraph (j) of This AD
------------------------------------------------------------------------
   Boeing Special Attention
      Service Bulletin--         Revision--             Dated--
------------------------------------------------------------------------
757-24-0106..................  ..............  September 30, 2004.
757-24-0106..................               1  June 23, 2005.
757-24-0106..................               2  April 20, 2006.
757-24-0106..................               3  October 3, 2006.
------------------------------------------------------------------------

    (3) This paragraph provides credit for inspections and 
corrective actions, as required by paragraph (g) of this AD, if 
those actions were performed before the effective date of this AD 
using the service information listed in table 5 of this AD.

   Table 5--Previous Service Information for Paragraph (g) of This AD
------------------------------------------------------------------------
   Boeing Special Attention
      Service Bulletin--         Revision--             Dated--
------------------------------------------------------------------------
757-24-0105..................               3  October 3, 2006.
757-24-0105..................               4  January 4, 2008.
757-24-0106..................               3  October 3, 2006.
757-24-0106..................               4  January 4, 2008.
------------------------------------------------------------------------

(l) Special Flight Permit

    Special flight permits may be issued in accordance with sections 
21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 
and 21.199) to operate the airplane to a location where the 
requirements of this AD can be accomplished, provided that the 
generator served by the power feeder wire bundles specified in 
paragraph (g) or (j) of this AD, as applicable, is disconnected.

(m) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle Aircraft Certification Office (ACO), 
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 manager of the ACO, send it to the 
attention of the person identified in the Related Information 
section of this AD. Information may be emailed to: [email protected].
    (2) 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.
    (3) AMOCs approved previously in accordance with AD 2007-03-01, 
Amendment 39-14912 (72 FR 3939, January 29, 2007), are approved as 
AMOCs for the corresponding provisions of paragraph (g) of this AD.

[[Page 12170]]

(n) Related Information

    For more information about this AD, contact Marie Hogestad, 
Aerospace Engineer, Systems and Equipment Branch, ANM-130S, FAA, 
Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., 
Renton, Washington 98057-3356; phone: 425-917-6418; fax: 425-917-
6590; email: [email protected].

(o) Material Incorporated by Reference

    (1) You must use the following service information to do the 
actions required by this AD, unless the AD specifies otherwise. The 
Director of the Federal Register approved the incorporation by 
reference (IBR) under 5 U.S.C. 552(a) and 1 CFR part 51 of the 
following service information on the date specified:
    (i) Boeing Special Attention Service Bulletin 757-24-0105, 
Revision 5, dated July 30, 2009, approved for IBR April 4, 2012.
    (ii) Boeing Special Attention Service Bulletin 757-24-0106, 
Revision 5, dated July 30, 2009, approved for IBR April 4, 2012.
    (2) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; phone: 206-
544-5000, extension 1; fax: 206-766-5680; email: 
[email protected]; Internet https://www.myboeingfleet.com.
    (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 an NARA facility, 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 January 18, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2012-4428 Filed 2-28-12; 8:45 am]
BILLING CODE 4910-13-P