Document ID: FAA-2011-0318-0028
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: Burl A. Rogers (Type Certificate Previously Held by William Brad Mitchell and Aeronca, Inc.) Airplanes
Posted Date: 2012-03-13T04:00Z

[Federal Register Volume 77, Number 49 (Tuesday, March 13, 2012)]
[Rules and Regulations]
[Pages 14681-14686]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-5864]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0318; Directorate Identifier 2010-CE-033-AD; 
Amendment 39-16966; AD 2012-04-10]
RIN 2120-AA64

Airworthiness Directives; Burl A. Rogers (Type Certificate 
Previously Held by William Brad Mitchell and Aeronca, Inc.) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for all 
Burl A. Rogers (type certificate previously held by William Brad 
Mitchell and Aeronca, Inc.) Models 15AC and S15AC airplanes. This AD 
was prompted by reports of intergranular exfoliation and corrosion of 
the upper and/or lower wing main spar cap angles found on the affected 
airplanes. This AD requires repetitive inspections of the upper and 
lower main wing spar cap angles for cracks and/or corrosion and 
installing inspection access panels. This AD also requires replacing 
the wing spar cap angles if moderate or severe corrosion is found and 
applying corrosion inhibitor. We are issuing this AD to correct the 
unsafe condition on these products.

DATES: This AD is effective April 17, 2012.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in the AD as of April 17, 
2012.

ADDRESSES: For service information identified in this AD, contact 
Burl's Aircraft, LLC, P.O. Box 671487, Chugiak, Alaska 99567-1487; 
phone: (907) 688-3715; fax (907) 688-5031; email burl@biginalaska.com; 
Internet: http://www.burlac.com. You may review copies of the 
referenced service information at the FAA, Small Airplane

[[Page 14682]]

Directorate, 901 Locust, Room 301, Kansas City, MO 64106. For 
information on the availability of this material at the FAA, call (816) 
329-4148.

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: August Asay, Supervisory Aerospace 
Engineer, FAA, Anchorage Aircraft Certification Office, 222 W. 7th 
Ave., 14, Anchorage, Alaska 99513; telephone: (907) 271-2668; 
fax: (907) 271-6365; email: august.asay@faa.gov.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to include an AD that would apply to the specified products. 
That NPRM published in the Federal Register on April 4, 2011 (76 FR 
18454). That NPRM proposed to require repetitive inspections of the 
upper and lower main wing spar cap angles for cracks and/or corrosion 
and installing inspection access panels. That NPRM also proposed to 
require replacing the wing spar cap angles if moderate or severe 
corrosion is found and applying corrosion inhibitor.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the proposal 
(76 FR 18454, April 4, 2011) and the FAA's response to each comment.

Request To Extend Comment Period

    The Experimental Aircraft Association (EAA), John Poulter, Andrew 
Cooper Crow, Eric Sandberg, Rodney David Pollard, Kyle W. Boatright, 
and 10 other commenters requested an extension of the comment period.
    The commenters stated that additional time was needed to receive 
all of the data requested through the Freedom of Information Act and to 
prepare a request for an alternative method of compliance (AMOC).
    We do not agree to extend the comment period again. We issued the 
proposed AD (76 FR 18454, April 4, 2011) with a 45-day open comment 
period. Due to several public comments received at that time requesting 
an extension of the comment period to facilitate fact finding/
information gathering, we issued an extension of the comment period (76 
FR 23920, April 29, 2011) that extended the comment period for an 
additional 45 days. Even though we did not extend the comment period 
any further, we have accepted all comments to the docket that were 
received after the comment close date.
    We have determined it is in the best interest of the public to go 
forward with this AD to address the unsafe condition on these 
airplanes. The public may always propose AMOCs to show compliance to 
the requirements cited in the AD. We will review and consider all AMOC 
requests we receive provided they follow the procedures in 14 CFR 39.19 
and this AD.
    We made no change to the AD based on this comment.

Request To Use Different Inspection Method

    John Poulter, Kyle W. Boatright, Douglas T. Rounds, Frank Charles, 
Gerald Wayne Cox, John Landers, Ron Craig Cooper, and four other 
commenters requested approval to use the borescope inspection method.
    The commenters stated that using a borescope when inspecting the 
main spar cap angles on the wings for corrosion would save time and the 
expense of installing access covers in the wings.
    We agree that a borescope inspection could provide an acceptable 
level of safety for doing the required inspection; however, we disagree 
with approving it for this AD because we do not have written detailed 
guidance for doing a borescope inspection that we can refer to in this 
AD at this time.
    The public may always propose AMOCs to show compliance to the 
requirements cited in the AD. We will review and consider all AMOC 
requests we receive provided they follow the procedures in 14 CFR 39.19 
and this AD.
    We made no change to the AD based on this comment.

Request To Change the Costs of Compliance Section

    An anonymous commenter stated that the Costs of Compliance section 
should be re-evaluated.
    The commenter stated that the estimated cost information in the 
proposed AD (76 FR 18454, April 4, 2011) is misleading since some of 
the information is presented per wing instead of per airplane. The 
commenter also stated that the estimated cost of replacing the main 
spar cap on both wings could exceed the value of the airplane, and the 
estimated cost to inspect and install inspection panels could easily 
amount to 10 to 25 percent of the value of the airplane.
    The commenter stated that there are less costly, yet as effective, 
options to comply with the AD, and we should include those costs in the 
AD.
    We do not agree with the commenter. We determined that the 
estimated costs stated in the proposed AD (76 FR 18454, April 4, 2011) 
represent the most accurate estimate we can make at this time. Total 
fleet repair costs were not calculated because we have no way of 
determining the number of wings that will be found to be corroded and/
or cracked that will need to be replaced.
    The public may always propose AMOCs to show compliance to the 
requirements cited in the AD. The FAA will review and consider all AMOC 
requests we receive provided they follow the procedures in 14 CFR 39.19 
and this AD.
    We made no change to the AD based on this comment.

Request To Incorporate Revised Service Information

    Burl's Aircraft, LLC issued additional installation instructions 
for installing the 2-1272 reinforcement doubler and the 2-1285 
inspection cover assemblies. We infer that Burl's Aircraft, LLC wants 
the FAA to include the installation instructions into the final rule AD 
action.
    We agree. We have revised the final rule AD action to incorporate 
using the installation instructions.

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 change 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 18454, April 4, 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 18454, April 4, 2011).
    We also determined that these changes will not increase the 
economic

[[Page 14683]]

burden on any operator or increase the scope of the AD.

Costs of Compliance

    We estimate that this AD will affect 255 airplanes in the U.S. 
registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
              Action                      Labor cost              Parts cost          product        operators
----------------------------------------------------------------------------------------------------------------
Initial inspection...............  10 work-hours x $85 per   Not applicable.....            $850        $216,750
                                    hour = $850.
Installation of inspection access  30 work-hours x $85 per   $630...............           3,180         810,900
 panels and inspection.             hour = $2,550.
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary replacements 
that will be required based on the results of the inspections. We have 
no way of determining the number of aircraft that might need these 
replacements:

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                Action                            Labor cost                  Parts cost           product  per
                                                                                                       wing
----------------------------------------------------------------------------------------------------------------
Replacement of main spar cap..........  80 work-hours x $85 per hour   $1,200 per wing.........          $8,000
                                         = $6,800 per wing.
----------------------------------------------------------------------------------------------------------------

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

    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,
    (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 adding the following new airworthiness 
directive (AD):

2012-04-10 Burl A. Rogers (Type Certificate Previously Held by 
William Brad Mitchell and Aeronca, Inc.) Models 15AC and S15AC 
Airplanes: Amendment 39-16966; Docket No. FAA-2011-0318; Directorate 
Identifier 2010-CE-033-AD.

(a) Effective Date

    This AD is effective April 17, 2012.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Burl A. Rogers (type certificate previously 
held by William Brad Mitchell and Aeronca, Inc.) Model 15AC and 
S15AC airplanes, all serial numbers, that are certificated in any 
category.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 57, Wings.

(e) Unsafe Condition

    This AD was prompted by reports of intergranular exfoliation and 
corrosion of the upper and/or lower wing main spar cap angles found 
on the affected airplanes. We are issuing this AD to detect and 
correct cracks and corrosion in the wing main spar cap angles, which 
could result in reduced strength of the wing spar and the load 
carrying capacity of the wing. This could lead to wing failure and 
consequent loss of control.

(f) Actions, Compliance, and Procedures

    Comply with this AD within the compliance times specified, 
unless already done (does not eliminate the repetitive actions of 
this AD).

[[Page 14684]]

------------------------------------------------------------------------
                                 When must it be
     What must be done?               done?         How must it be done?
------------------------------------------------------------------------
(1) Inspect the exposed       (i) Within the next   Follow Burl's
 trailing edges of both the    25 hours time-in-     Aircraft, LLC
 upper and lower main spar     service (TIS) after   Mandatory Service
 cap angles on both the left   April 17, 2012 (the   Bulletin No. 15AC06-
 and right wing for signs of   effective date of     08-10, dated June
 cracks, intergranular         this AD) or within    8, 2010; Burl's
 exfoliation, and corrosion.   the next 6 months     Aircraft, LLC
                               after April 17,       Mandatory Service
                               2012 (the effective   Bulletin No. 15AC06-
                               date of this AD),     08-10, Amendment A,
                               whichever occurs      dated June 23,
                               first; or             2010; or Burl's
                              (ii) If the left and/  Aircraft, LLC
                               or right wing have    Mandatory Service
                               been repaired and     Bulletin No. 15AC06-
                               both the upper and    08-10, Amendment B,
                               lower main spar       dated June 23,
                               caps have been        2010, Rev.
                               replaced using new    Original, September
                               parts: Inspect at     15, 2011; and FAA
                               or before the next    Advisory Circular
                               annual inspection     (AC) 43.13-1B,
                               that occurs 10        Change 1, Chapter
                               years after the       6. AC 43.13-1B can
                               replacement or        be found at http://
                               within the next 100   rgl.faa.gov/.
                               hours TIS after
                               April 17, 2012 (the
                               effective date of
                               this AD), whichever
                               occurs later. This
                               compliance time
                               applies separately
                               to each wing.
------------------------------------------------------------------------
(2) After completing the      (i) Within 12 months  Follow Burl's
 inspection required in        after April 17,       Aircraft, LLC
 paragraph (f)(1) of this      2012 (the effective   Mandatory Service
 AD, install new inspection    date of this AD);     Bulletin No. 15AC06-
 hole skin reinforcement       or                    08-10, dated June
 doublers and the associated  (ii) If the left and/  8, 2010, which
 screw cover plate in both     or right wing have    includes Burl's
 the left and right wing.      been repaired and     Aircraft, LLC
                               both the upper and    Drawing No. SB
                               lower main spar       15AC06-08-10 (not
                               caps have been        dated); Burl's
                               replaced using new    Aircraft, LLC
                               parts: At or before   Mandatory Service
                               the next annual       Bulletin No. 15AC06-
                               inspection that       08-10, Amendment A,
                               occurs 10 years       dated June 23,
                               after the             2010; or Burl's
                               replacement or        Aircraft, LLC
                               within the next 100   Mandatory Service
                               hours TIS after       Bulletin No. 15AC06-
                               April 17, 2012 (the   08-10, Amendment B,
                               effective date of     dated June 23,
                               this AD), whichever   2010, Rev.
                               occurs later. This    Original, September
                               compliance time       15, 2011, which
                               applies separately    references Burl's
                               to each wing.         Aircraft, LLC
                                                     Installation
                                                     Instruction No. SB
                                                     15AC06-08-10, dated
                                                     September 9, 2011,
                                                     Burl's Aircraft,
                                                     LLC Sketch No. SB
                                                     15AC06-08-10, dated
                                                     September 9, 2011,
                                                     and Burl's
                                                     Aircraft, LLC
                                                     Drawing No. 2-1272
                                                     Splice, dated
                                                     September 6, 2011;
                                                     and FAA Advisory
                                                     Circular (AC) 43.13-
                                                     1B, Change 1,
                                                     Chapter 6. AC 43.13-
                                                     1B can be found at
                                                     http://rgl.faa.gov/
                                                     .
------------------------------------------------------------------------
(3) After completing the      Before further        Follow Burl's
 inspection required in        flight after          Aircraft, LLC
 paragraph (f)(1) of this AD   installing the        Mandatory Service
 and installing the new        inspection hole       Bulletin No. 15AC06-
 inspection hole skin          skin reinforcement    08-10, dated June
 reinforcement doublers in     doublers as           8, 2010; Burl's
 the left and right wing as    required in           Aircraft, LLC
 required in paragraph         paragraph (f)(2) of   Mandatory Service
 (f)(2) of this AD, through    this AD.              Bulletin No. 15AC06-
 the inspection access                               08-10, Amendment A,
 panels, inspect the leading                         dated June 23,
 and trailing edges of both                          2010; or Burl's
 the upper and lower main                            Aircraft, LLC
 spar cap angles on both the                         Mandatory Service
 left and right wing for                             Bulletin No. 15AC06-
 signs of cracks,                                    08-10, Amendment B,
 intergranular exfoliation                           dated June 23,
 and corrosion.                                      2010, Rev.
                                                     Original, September
                                                     15, 2011.
------------------------------------------------------------------------
(4) Remove any light          Before further        Follow Burl's
 corrosion found during the    flight after the      Aircraft, LLC
 inspection required in        inspection required   Mandatory Service
 paragraph (f)(3) of this AD   in paragraph (f)(3)   Bulletin No. 15AC06-
 and treat the entirety of     of this AD.           08-10, dated June
 both the upper and lower                            8, 2010; Burl's
 main spar cap angles on                             Aircraft, LLC
 both the left and right                             Mandatory Service
 wing with corrosion                                 Bulletin No. 15AC06-
 inhibitor.                                          08-10, Amendment A,
                                                     dated June 23,
                                                     2010; or Burl's
                                                     Aircraft, LLC
                                                     Mandatory Service
                                                     Bulletin No. 15AC06-
                                                     08-10, Amendment B,
                                                     dated June 23,
                                                     2010, Rev.
                                                     Original, September
                                                     15, 2011.
------------------------------------------------------------------------
(5) If cracks, intergranular  Before further        Follow Burl's
 exfoliation, or moderate or   flight after the      Aircraft, LLC
 severe corrosion is found     inspection required   Mandatory Service
 during the inspection         in paragraphs         Bulletin No. 15AC06-
 required in paragraphs        (f)(1) and (f)(3)     08-10, dated June
 (f)(1) or (f)(3) of this      of this AD.           8, 2010; Burl's
 AD, replace the affected                            Aircraft, LLC
 main spar cap angles in                             Mandatory Service
 their entirety as a single                          Bulletin No. 15AC06-
 piece. Splicing of the main                         08-10, Amendment A,
 spar cap angles is not                              dated June 23,
 permitted.                                          2010; or Burl's
                                                     Aircraft, LLC
                                                     Mandatory Service
                                                     Bulletin No. 15AC06-
                                                     08-10, Amendment B,
                                                     dated June 23,
                                                     2010, Rev.
                                                     Original, September
                                                     15, 2011; and
                                                     contact Burl's
                                                     Aircraft, LLC in
                                                     paragraph (i) of
                                                     this AD for a
                                                     replacement scheme
                                                     and incorporate the
                                                     replacement scheme.
------------------------------------------------------------------------

[[Page 14685]]

 
(6) Removing the wing         Repetitively          Follow Burl's
 inspection access panels,     thereafter at         Aircraft, LLC
 repetitively inspect both     intervals not to      Mandatory Service
 the upper and lower forward   exceed every 12       Bulletin No. 15AC06-
 main spar caps on both the    months after the      08-10, dated June
 left and right wing for       inspection required   8, 2010; Burl's
 signs of cracks,              in paragraph (f)(3)   Aircraft, LLC
 intergranular exfoliation,    of this AD.           Mandatory Service
 and corrosion.                                      Bulletin No. 15AC06-
                                                     08-10, Amendment A,
                                                     dated June 23,
                                                     2010; or Burl's
                                                     Aircraft, LLC
                                                     Mandatory Service
                                                     Bulletin No. 15AC06-
                                                     08-10, Amendment B,
                                                     dated June 23,
                                                     2010, Rev.
                                                     Original, September
                                                     15, 2011; and FAA
                                                     Advisory Circular
                                                     (AC) 43.13-1B,
                                                     Change 1, Chapter
                                                     6. AC 43.13-1B can
                                                     be found at http://rgl.faa.gov/.
------------------------------------------------------------------------
(7) After each inspection     Before further        Follow Burl's
 required in paragraph         flight after each     Aircraft, LLC
 (f)(6) of this AD, if only    inspection required   Mandatory Service
 light corrosion is found,     in paragraph (f)(6)   Bulletin No. 15AC06-
 remove the corrosion and      of this AD.           08-10, dated June
 treat the main spar cap       Continue with the     8, 2010; Burl's
 angles with corrosion         repetitive            Aircraft, LLC
 inhibitor.                    inspections           Mandatory Service
                               required in           Bulletin No. 15AC06-
                               paragraph (f)(6) of   08-10, Amendment A,
                               this AD.              dated June 23,
                                                     2010; or Burl's
                                                     Aircraft, LLC
                                                     Mandatory Service
                                                     Bulletin No. 15AC06-
                                                     08-10, Amendment B,
                                                     dated June 23,
                                                     2010, Rev.
                                                     Original, September
                                                     15, 2011; and FAA
                                                     Advisory Circular
                                                     (AC) 43.13-1B,
                                                     Change 1, Chapter
                                                     6. AC 43.13-1B can
                                                     be found at http://rgl.faa.gov/.
                                                     Contact Burl's
                                                     Aircraft, LLC in
                                                     paragraph (i) of
                                                     this AD for a
                                                     replacement scheme
                                                     and incorporate the
                                                     replacement scheme.
------------------------------------------------------------------------
(8) After each inspection     Before further        Follow Burl's
 required in paragraph         flight after each     Aircraft, LLC
 (f)(6) of this AD, if         inspection required   Mandatory Service
 cracks, intergranular         in paragraph (f)(6)   Bulletin No. 15AC06-
 exfoliation, or moderate or   of this AD.           08-10, dated June
 severe corrosion is found,    Continue with the     8, 2010; Burl's
 replace the affected main     repetitive            Aircraft, LLC
 spar cap angles in their      inspections           Mandatory Service
 entirety as a single piece.   required in           Bulletin No. 15AC06-
 Splicing of the main spar     paragraph (f)(6) of   08-10, Amendment A,
 cap angles is not permitted.  this AD.              dated June 23,
                                                     2010; or Burl's
                                                     Aircraft, LLC
                                                     Mandatory Service
                                                     Bulletin No. 15AC06-
                                                     08-10, Amendment B,
                                                     dated June 23,
                                                     2010, Rev.
                                                     Original, September
                                                     15, 2011; and FAA
                                                     Advisory Circular
                                                     (AC) 43.13-1B,
                                                     Change 1, Chapter
                                                     6. AC 43.13-1B can
                                                     be found at http://rgl.faa.gov/.
                                                     Contact Burl's
                                                     Aircraft, LLC in
                                                     paragraph (i) of
                                                     this AD for a
                                                     replacement scheme
                                                     and incorporate the
                                                     replacement scheme.
------------------------------------------------------------------------
(9) Only install main spar    As of April 17, 2012  Not applicable.
 cap angles that have been     (the effective date
 inspected and are free of     of this AD).
 cracks, intergranular
 exfoliation, or moderate or
 severe corrosion.
------------------------------------------------------------------------

(g) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Anchorage 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.
    (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.

 (h) Related Information

    For more information about this AD, contact August Asay, 
Supervisory Aerospace Engineer, FAA, Anchorage ACO, 222 W. 7th Ave., 
14, Anchorage, Alaska 99513; telephone: (907) 271-2668; 
fax: (907) 271-6365; email: august.asay@faa.gov.

(i) 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.
    (i) Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06-
08-10, dated June 8, 2010;
    (ii) Burl's Aircraft, LLC Mandatory Service Bulletin No. 15AC06-
08-10, Amendment A, dated June 23, 2010;
    (iii) Burl's Aircraft, LLC Mandatory Service Bulletin No. 
15AC06-08-10, Amendment B, dated June 23, 2010, Rev. Original, 
September 15, 2011;
    (iv) Burl's Aircraft, LLC Installation Instruction No. SB 
15AC06-08-10, dated September 9, 2011;
    (v) Burl's Aircraft, LLC Drawing No. SB 15AC06-08-10 (not 
dated);
    (vi) Burl's Aircraft, LLC Sketch No. SB 15AC06-08-10, dated 
September 9, 2011; and
    (vii) Burl's Aircraft, LLC Drawing No. 2-1272 Splice, dated 
September 6, 2011; and
    (2) For service information identified in this AD, contact 
Burl's Aircraft, LLC, P.O. Box 671487, Chugiak, Alaska 99567-1487; 
telephone: (907) 688-3715; fax (907) 688-5031; email 
burl@biginalaska.com; Internet: http://www.burlac.com.
    (3) You may review copies of the service information at the FAA, 
Small Airplane Directorate, 901 Locust, Room 301, Kansas City, MO 
64106. For information on the availability of this material at the 
FAA, call (816) 329-4148.
    (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/cfr/ibr-locations.html.

[[Page 14686]]

    Issued in Kansas City, Missouri, on February 21, 2012.
Earl Lawrence,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2012-5864 Filed 3-12-12; 8:45 am]
BILLING CODE 4910-13-P