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[Federal Register Volume 79, Number 194 (Tuesday, October 7, 2014)]
[Proposed Rules]
[Pages 60384-60389]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2014-23879]

=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0771; Directorate Identifier 2014-CE-006-AD]
RIN 2120-AA64

Airworthiness Directives; Beechcraft Corporation Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Beechcraft Corporation Model G58 airplanes. This proposed AD 
was prompted by reports of fuel leaks due to fuel cells that did not 
properly fit in Model G58 airplanes. This proposed AD would require 
inspecting for and replacing, as necessary, certain fuel cells. This 
proposed AD would also require inspecting and replacing parts, as 
necessary, of the left and right fuel system installations and 
correcting torques on fuel system fittings; and prohibit future 
installations of certain fuel cells. We are proposing this AD to 
correct the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by November 21, 
2014.

[[Page 60385]]

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, 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: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this AD, contact Beechcraft 
Corporation, 2121 South Hoover Road, Wichita, Kansas 67209; telephone: 
(316) 676-3140; fax: (316) 676-8027; email: Piston_support@txtav.com; 
Internet: www.beechcraft.com. You may review copies of the referenced 
service information at the FAA, Small Airplane Directorate, 901 Locust, 
Kansas City, Missouri 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 by searching for and locating Docket No. FAA-2014-
0771; 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 (phone: 800-647-5527) is in the ADDRESSES section. Comments will 
be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: 
     For information relating to Beechcraft Corporation Model 
G58 airplanes or part numbers contact: Thomas Teplik, Aerospace 
Engineer, Wichita Aircraft Certification Office, FAA, 1801 Airport 
Road, Room 100, Wichita, Kansas 67209; phone: (316) 946-4196; fax: 
(316) 946-4107; email: thomas.teplik@faa.gov.
     For information relating to Floats and Fuel Cells, Inc. 
(FFC) parts manufacturer approval (PMA) fuel cells contact: Keith 
Moore, Atlanta Aircraft Certification Office, FAA, 1701 Columbia 
Avenue, College Park, Georgia 30337; telephone: (404) 474-5517; fax: 
(404) 474-5500; email: keith.moore@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2014-0771; 
Directorate Identifier 2014-CE-006-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

    We received seven reports of fuel leaks in Beechcraft Corporation 
Model G58 airplanes. Six fuel leaks were observed before takeoff or 
after landing. One in-flight fuel leak caused large and rapid loss of 
fuel and a 24-gallon fuel imbalance.
    An investigation found issues that may have occurred on the 
production line, including fuel cell fit inconsistencies; improper 
installation of fuel components, which may cause loads on fuel cells 
and breach of fuel cells; and improper installation of fuel hoses and 
clamps, which may cause fuel leaks.
    Further investigation found discrepancies and variation in the fit 
of the fuel cell on airplanes produced after December 2011.
    These conditions, if not corrected, could result in significant 
fuel leakage. This could lead to an imbalance condition, which may 
affect airplane controllability and/or could lead to an airplane fire.

Relevant Service Information

    We reviewed Beechcraft Mandatory Service Bulletin SB 28-4127, dated 
June 2013; and Beechcraft Mandatory Service Bulletin SB 28-4131, dated 
November 2013. The service information describes procedures for 
inspection of the left and right fuel system installations and 
replacement of parts, as necessary; inspection for proper torque on 
fuel system fittings; and inspection and replacement, as necessary, of 
fuel cells.

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design. 
This proposed AD will only affect fuel cells installed on airplanes 
produced after December 2011. This proposed AD would include 
prohibiting the installation of both Beechcraft fuel cell part numbers 
produced by FFC and any PMA part numbers on the Model G58 airplanes 
serial numbers (SNs) TH-2335 through TH-2378, certificated in any 
category.
    We are evaluating the Beechcraft and PMA fuel cells that are 
installed on airplanes prior to December 2011 for the same or similar 
condition and may take future rulemaking action for airplanes 
incorporating these parts.

Proposed AD Requirements

    This proposed AD would require accomplishing the actions specified 
in the service information described previously and prohibit the 
installation of certain Beechcraft and FFC PMA fuel cells.

Costs of Compliance

    We estimate that this proposed AD affects 18 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
              Action                      Labor cost             Parts cost           product        operators
----------------------------------------------------------------------------------------------------------------
* Inspection of fuel cells........  12 work-hours x $85    Not Applicable.......          $1,020          $5,100
                                     per hour = $1,020.
** Inspection of left and right     30 work-hours x $85    Not Applicable.......           2,550          28,050
 fuel system installations.          per hour = $2,550.

[[Page 60386]]

 
*** Inspection for proper torque    4 work-hours x $85     Not Applicable.......             340           2,380
 on fuel system fittings.            per hour = $340.
----------------------------------------------------------------------------------------------------------------
* Applies to the 5 specific serial numbers on the U.S. registry that may have improperly fitting fuel cells
  installed at production.
** Applies to the 11 specific serial numbers on the U.S. registry that must do Part 1 of the service
  information.
*** Applies to the 7 specific serial numbers on the U.S. registry, listed in the service information that must
  do Part 2 of the service information.

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

                                               On-condition Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                     Cost per
                 Action                           Labor cost                  Parts cost              product
----------------------------------------------------------------------------------------------------------------
Replacement of left-hand (LH) leading     16 work-hours x $85 per     $2,599 (includes fuel               $3,959
 edge (LE) outboard fuel cell.             hour = $1,360.              cell, $2,545 + clamp/
                                                                       gasket, $54).
Replacement of right-hand (RH) LE         16 work-hours x $85 per     $2,599 (includes fuel                3,959
 outboard fuel cell.                       hour = $1,360.              cell, $2,545 + clamp/
                                                                       gasket, $54).
Replacement of LH LE inboard fuel cell..  16 work-hours x $85 per     $4,264 (includes fuel                5,624
                                           hour = $1,360.              cell, $4,210 + clamp/
                                                                       gasket, $54).
Replacement of RH LE inboard fuel cell..  16 work-hours x $85 per     $2,242 (includes fuel                3,602
                                           hour = $1,360.              cell, $2,188 + clamp/
                                                                       gasket, $54).
Replacement of LH center fuel cell......  16 work-hours x $85 per     $1,931 (includes fuel                3,291
                                           hour = $1,360.              cell, $1,877 + clamp/
                                                                       gasket, $54).
Replacement of RH center fuel cell......  16 work-hours x $85 per     $3,049 (includes fuel                4,409
                                           hour = $1,360.              cell, $2,995 + clamp/
                                                                       gasket, $54).
Replacement of tube assembly, flex hose,  10 work-hours x $85 per     $672 (includes LH and RH             1,522
 and clamps.                               hour = $850.                tube assemblies, flex
                                                                       hoses, and clamps).
----------------------------------------------------------------------------------------------------------------

    According to Beechcraft Corporation, some of the costs of this 
proposed AD may be covered under warranty, thereby reducing the cost 
impact on affected individuals. We do not control warranty coverage for 
affected individuals. As a result, we have included all costs in our 
cost estimate.

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),
    (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.

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

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):

Beechcraft Corporation: Docket No. FAA-2014-0771; Directorate 
Identifier 2014-CE-006-AD.

(a) Comments Due Date

    We must receive comments by November 21, 2014.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Beechcraft Corporation Model G58 airplanes, 
serial numbers (SNs) TH-2335 through TH-2378, certificated in any 
category.

[[Page 60387]]

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code: 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by reports of fuel leaks due to fuel cells 
that did not properly fit in Model G58 airplanes. We are issuing 
this AD to detect and correct improperly fitting fuel cells. We are 
also issuing this AD to correct left and right fuel system 
installations and set correct torque on fuel system fittings for all 
affected airplanes, which if not corrected, could result in 
significant fuel leakage. This could lead to an imbalance condition, 
which may affect airplane controllability, and/or could lead to an 
airplane fire.

(f) Compliance

    Comply with this AD within the compliance times specified in 
paragraphs (g) and (h), including all subparagraphs, unless already 
done. All of the actions in paragraphs (g) and (h) must be completed 
for compliance with this AD. The actions of Beechcraft Mandatory 
Service Bulletin SB 28-4127, dated June 2013, and Beechcraft 
Mandatory Service Bulletin SB 28-4131, dated November 2013, have 
numerous overlapping tasks. Instead of completing the required 
actions in paragraph (g) and paragraph (h) separately, you may 
complete the actions of both paragraphs concurrently to avoid 
repeating the same tasks unnecessarily. We recommend reviewing 
Appendices 1 through 3 for general guidance and suggestions for task 
ordering to assist you in not repeating tasks unnecessarily.

(g) Fuel Cell Inspection

    (1) For Model G58 airplanes, S/Ns TH-2356 through TH-2378: 
within the next 100 hours TIS after the effective date of this AD or 
within the next 12 months after the effective date of this AD, 
whichever occurs first, inspect the fuel cells (left hand (LH) 
inboard, outboard, and center; and right hand (RH) inboard, 
outboard, and center) following Beechcraft Mandatory Service 
Bulletin SB 28-4131, dated November 2013. If any fuel cell is 
Beechcraft Corporation P/N 60-921046-5, 60-921046-6, 002-920034-9, 
002-920034-10, 58-380003-13, or 58-380003-14; or Floats and Fuel 
Cells, Inc. (FFC) parts manufacturer approval (PMA) P/N B-2503-9/-
10; B-2034-3/-4; or B-2646-3/-4, before further flight, replace the 
fuel cell(s) with Beechcraft Corporation P/N 60-921046-1, 60-921046-
2, 002-920034-1, 002-920034-2, 58-380003-5, or 58-380003-6, as 
applicable, following Beechcraft Mandatory Service Bulletin SB 28-
4131, dated November 2013.
    (2) For Model G58 airplanes, S/Ns TH-2335 through TH-2378: as of 
the effective date of this AD, do not install the following P/Ns:
    (i) Beechcraft Corporation P/N 60-921046-5, 60-921046-6, 002-
920034-9, 002-920034-10, 58-380003-13, or 58-380003-14; or
    (ii) FFC PMA fuel cells P/N B-2503-9/-10, B-2034-3/-4, or B-
2646-3/-4.

(h) Fuel System Inspection

    Certain Model G58 airplanes, as listed in paragraphs (h)(1), 
(h)(2), and (h)(3) of this AD, may have incorrect left and right 
fuel system installations and incorrect torque on fuel system 
fittings.
    (1) For Model G58 airplanes, SNs TH-2335, TH-2338 through TH-
2348, TH-2351 through TH-2359, TH-2362 through TH-2366, TH-2369, and 
TH-2371 that are already in compliance with Part 1 of the 
Accomplishment Instructions in Beechcraft Mandatory Service Bulletin 
SB 28-4127, dated June 2013: Within 100 hours TIS after the 
effective date of this AD or within the next 12 months after the 
effective date of this AD, whichever occurs first, do the following 
actions in paragraphs (h)(1)(i) and (h)(1)(ii), including all 
subparagraphs as applicable:
    (i) If any discrepancies are/were found during the inspection of 
the fuel cell system that required replacement of one of the fuel 
cells, do the following actions:
    (A) Review the airplane maintenance records, Airworthiness 
Approval Tag (FAA Form 8130-3), or other positive form of parts 
identification such as a shipping ticket, invoice, or direct ship 
authority letter, to determine if the replaced fuel cell(s) is P/N 
60-921046-5, 60-921046-6, 002-920034-9, 002-920034-10, 58-380003-13, 
or 58-380003-14; or FFC P/N B-2503-9/-10, B-2034-3/-4, or B-2646-3/-
4.
    (B) If during the check in paragraph (h)(1)(i)(A) of this AD, 
you positively identify the replaced fuel cell(s) is not P/N 60-
921046-5, 60-921046-6, 002-92003-9, 002-920034-10, 58-380003-13, or 
58-380003-14; or FFC P/N B-2503-9/-10, B-2034-3/-4, or B-2646-3/-4, 
go to the required action in paragraph (h)(1)(ii) of this AD.
    (C) If during the check in paragraph (h)(1)(i)(A) of this AD, 
you positively identify the replaced fuel cell(s) is P/N 60-921046-
5, 60-921046-6, 002-920034-9, 002-920034-10, 58-380003-13, 58-
380003-14; or FFC P/N B-2503-9/-10, B-2034-3/-4, or B-2646-3/-4, 
before further flight, replace the fuel cell(s) with Beechcraft 
Corporation P/N 60-921046-1, 60-921046-2, 002-920034-1, 002-920034-
2, 58-380003-5, or 58-380003-6, as applicable, following Beechcraft 
Mandatory Service Bulletin SB 28-4131, dated November 2013.
    (D) If during the check in paragraph (h)(1)(i)(A) of this AD, 
you cannot positively identify the P/N of the replaced fuel cell(s), 
within the next 100 hours TIS after the effective date of this AD or 
within the next 12 months after the effective date of this AD, 
whichever occurs first, physically inspect each replaced fuel cell 
to verify the part number. If the replaced fuel cell(s) is P/N 60-
921046-5, 60-921046-6, 002-920034-9, 002-920034-10, 58-380003-13, 
58-380003-14; or FFC P/N B-2503-9/-10, B-2034-3/-4, or B-2646-3/-4, 
before further flight, replace the fuel cell(s) with Beechcraft 
Corporation P/N 60-921046-1, 60-921046-2, 002-920034-1, 002-920034-
2, 58-380003-5, or 58-380003-6, as applicable, following Beechcraft 
Mandatory Service Bulletin SB 28-4131, dated November 2013.
    (ii) Gain access to the wet wing interconnect tube P/N 60-
921047-1 following Part 1 of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4127, dated June 2013. 
Verify wet wing interconnect tube P/N 60-921047-1 is installed in 
leading edge outboard fuel cell with correct clamp P/N 52KS3 or P/N 
4852SS305 and the clamp is torqued to 20 to 25 inch pounds.

    Note 1 to paragraphs (h)(1)(ii) and (h)(2)(iii): The correct 
clamp part number and correct torque for installing the wet wing 
interconnect tube were inadvertently omitted from Beechcraft 
Mandatory Service Bulletin SB 28-4127, dated June 2013, when it was 
issued.

    (A) If you can positively identify the wet wing interconnect 
tube is installed with the correct clamp and the correct torque 
value during the inspection required in paragraph (h)(1)(ii) of this 
AD, return airplane to service and perform leak check following Part 
1 of the Accomplishment Instructions in Beechcraft Mandatory Service 
Bulletin SB 28-4127, dated June 2013.
    (B) If you cannot positively identify the wet wing interconnect 
tube is installed with the correct clamp and/or the correct torque 
value during the inspection required in paragraph (h)(1)(ii) of this 
AD, before further flight, replace the clamp with P/N 52KS3 or P/N 
4852SS305 and/or correct the clamp torque to 20 to 25 inch pounds. 
Return airplane to service and do a leak check following Part 1 of 
the Accomplishment Instructions in Beechcraft Mandatory Service 
Bulletin SB 28-4127, dated June 2013.
    (2) For Model G58 airplanes, SNs TH-2335, TH-2338 through TH-
2348, TH-2351 through TH-2359, TH-2362 through TH-2366, TH-2369, and 
TH-2371 that are not in compliance with Part 1 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127, 
dated June 2013: Within 100 hours TIS after the effective date of 
this AD or within the next 12 months after the effective date of 
this AD, whichever occurs first, do the following actions in 
paragraphs (h)(2)(i) through (h)(2)(iii) of this AD, including all 
subparagraphs.
    (i) Inspect the fuel cell system following Part 1 of the 
Accomplishment Instructions in Beechcraft Mandatory Service Bulletin 
SB 28-4127, dated June 2013.
    (ii) If any discrepancies are found in the inspection required 
in paragraph (h)(2)(i) of this AD, before further flight, replace/
correct those discrepancies following Part 1 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127, 
dated June 2013. If the corrective action requires replacement of 
one of the fuel cells, replace the fuel cell with Beechcraft 
Corporation P/N 60-921046-1, 60-921046-2, 002-920034-1, 002-920034-
2, 58-380003-5, or 58-380003-6, as applicable.
    (iii) During the inspection required in paragraph (h)(2)(i) of 
this AD, ensure that wet wing interconnect tube P/N 60-921047-1 is 
installed in the leading edge outboard fuel cell with clamp P/N 
52KS3 or P/N 4852SS305 and the clamp is torqued to 20 to 25 inch 
pounds.
    (A) If you can positively identify the wet wing interconnect 
tube is installed with the correct clamp and the correct torque 
value during the inspection required in paragraph

[[Page 60388]]

(h)(2)(iii) of this AD, return airplane to service and perform leak 
check following Part 1 of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4127, dated June 2013.
    (B) If you cannot positively identify the wet wing interconnect 
tube is installed with the correct clamp and/or the correct torque 
value during the inspection required in paragraph (h)(2)(iii) of 
this AD, before further flight, replace the clamp with P/N 52KS3 or 
P/N 4852SS305 and/or correct the clamp torque to 20 to 25 inch 
pounds. Return airplane to service and do leak check following Part 
1 of the Accomplishment Instructions in Beechcraft Mandatory Service 
Bulletin SB 28-4127, dated June 2013.
    (3) For Model G58 airplanes SNs TH-2336, TH-2337, TH-2349, TH-
2350, TH-2360, TH-2361, TH-2367, TH-2368, TH-2370, TH-2372, and TH-
2373: Within 100 hours TIS after the effective date of this AD or 
within the next 12 months after the effective date of this AD, 
whichever occurs first, inspect the fuel system following Part 2 of 
the Accomplishment Instructions in Beechcraft Mandatory Service 
Bulletin SB 28-4127, dated June 2013. If any discrepancies are 
found, before further flight, replace/correct those discrepancies 
following Part 2 of the Accomplishment Instructions in Beechcraft 
Mandatory Service Bulletin SB 28-4127, dated June 2013.

(i) Special Flight Permit

    Special flight permits are permitted in accordance with 14 CFR 
39.23 provided the following limitation is adhered to: One flight to 
a repair facility.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Wichita Aircraft Certification Office (ACO) 
(for the Beechcraft parts), FAA, or the Manager, Atlanta ACO (for 
the FFC PMA parts), 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 paragraph (k) 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.

(k) Related Information

    (1) For information relating to Beechcraft Corporation Model G58 
airplanes or part numbers contact: Thomas Teplik, Aerospace 
Engineer, Wichita ACO, FAA, 1801 Airport Road, Room 100, Wichita, 
Kansas 67209; phone: (316) 946-4196; fax: (316) 946-4107; email: 
thomas.teplik@faa.gov.
    (2) For information relating to FFC PMA fuel cells contact: 
Keith Moore, Atlanta ACO, FAA, 1701 Columbia Avenue, College Park, 
Georgia 30337; telephone: (404) 474-5517; fax: (404) 474-5500; 
email: keith.moore@faa.gov.
    (3) For service information identified in this AD, contact 
Beechcraft Corporation, 2121 South Hoover Road, Wichita, Kansas 
67209; telephone: (316) 676-3140; fax: (316) 676-8027; email: 
Piston_support@txtav.com; Internet: www.beechcraft.com. You may 
review copies of the referenced service information at the FAA, 
Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. 
For information on the availability of this material at the FAA, 
call (816) 329-4148.

Appendix 1 to AD 2014* * *

    For Model G58 airplanes serial numbers TH-2356 through TH-2359, 
TH-2362 through TH-2366, TH-2369, and TH-2371 that have already 
completed Beechcraft Mandatory Service Bulletin SB 28-4131, dated 
November 2013, but have not completed Part 1 of Beechcraft Mandatory 
Service Bulletin SB 28-4127, dated June 2013.
    The information in the appendix cannot be used for direct 
compliance with the AD. All of the actions in paragraphs (g) and (h) 
of this AD must be completed for compliance with this AD. The 
following is a suggested order of tasks that may assist the mechanic 
in completing overlapping tasks associated with Beechcraft Mandatory 
Service Bulletin SB 28-4131, dated November 2013, and Part 1 of 
Beechcraft Mandatory Service Bulletin SB 28-4127, dated June 2013.

Suggested Order of Tasks

    1. Do steps (1) through (6) and (6)(a) through (6)(d) (Outboard 
Wet Wing Interconnect Area) of Part 1 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127. 
Ensure that wet wing interconnect tube part number (P/N) 60-921047-1 
is installed in the leading edge outboard fuel cell with the correct 
clamp P/N 52KS3 or P/N 4852SS305 and the clamp is correctly torqued 
to 20 to 25 inch pounds. Note: For step (6)(d) of Part 1 of the 
Accomplishment Instructions in Beechcraft Mandatory Service Bulletin 
SB 28-4127, the access panels may need to be removed again for 
additional tasks listed below.
    2. For any fuel cells that were not replaced while doing 
Beechcraft Mandatory Service Bulletin SB 28-4131, inspect by doing 
step (7) (Inspection at Three Fuel Cells) of Part 1 of the 
Accomplishment Instructions in Beechcraft Mandatory Service Bulletin 
SB 28-4127.
    3. If any of the fuel cells are found damaged or leaking during 
the inspection, replace with fuel cells listed in Beechcraft 
Mandatory Service Bulletin SB 28-4131.
    4. Do steps (8) through (25) (Inspection of Wheel Well and 
Nacelle Area) of Part 1 of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4127.

Appendix 2 to AD 2014* * *

    For Model G58 airplanes serial numbers TH-2356 through TH-2359, 
TH-2362 through TH-2366, TH-2369, and TH-2371 that have not 
completed Beechcraft Mandatory Service Bulletin SB 28-4131, dated 
November 2013, and have not completed Part 1 of Beechcraft Mandatory 
Service Bulletin SB 28-4127, dated June 2013.
    The information in the appendix cannot be used for direct 
compliance with the AD. All of the actions in paragraphs (g) and (h) 
of this AD must be completed for compliance with this AD. The 
following is a suggested order of tasks that may assist the mechanic 
in completing overlapping tasks associated with Beechcraft Mandatory 
Service Bulletin SB 28-4131, dated November 2013, and Part 1 of 
Beechcraft Mandatory Service Bulletin SB 28-4127, dated June 2013.

Suggested Order of Tasks

    1. Do steps (1)(a) through (1)(e) of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4131.
    2. Do steps (6) and (6)(a) through (6)(d) (Outboard Wet Wing 
Interconnect Area) of Part 1 of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4127. Ensure that wet 
wing interconnect tube part number (P/N) 60-921047-1 is installed in 
the leading edge outboard fuel cell with the correct clamp P/N 52KS3 
or P/N 4852SS305 and the clamp is correctly torqued to 20 to 25 inch 
pounds.
    Note: For step (6)(d) of Part 1 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127, 
the access panels may need to be removed again for additional tasks 
listed below.
    3. Do step (1)(f) of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4131.
    4. If it has been determined by doing step 1(f) of Beechcraft 
Mandatory Service Bulletin SB 28-4131, that any of the following 
correct fuel cells P/Ns 60-921046-1, 60-921046-2, 002-920034-1, 002-
920034-2, 58-380003-5, or 58-380003-6 are installed in the airplane, 
do steps (7)(a) through (7)(c) (Inspection at Three Fuel Cells) of 
Part 1 of the Accomplishment Instructions in Beechcraft Mandatory 
Service Bulletin SB 28-4127. These steps ensure P/Ns 60-921046-1, 
60-921046-2, 002-920034-1, 002-920034-2, 58-380003-5, or 58-380003-6 
is properly installed.
    5. If it has been determined by doing step 1(f) of Beechcraft 
Mandatory Service Bulletin SB 28-4131, that any of the following 
fuel cell P/Ns 60-921046-5, 60-921046-6, 002-920034-9, 002-920034-
10, 58-380003-13, or 58-380003-14 or PMA part numbers B-2503-9/-10, 
B-2034-3/-4, or B-2646-3/-4 are installed in the airplane, do steps 
(2) through (5) of the Accomplishment Instructions in Beechcraft 
Mandatory Service Bulletin SB 28-4131. These steps ensure improperly 
fitting fuel cells are removed from the airplane. Do steps (7)(a) 
through (7)(c) (Inspection at Three Fuel Cells) of Part 1 of the 
Accomplishment Instructions in Beechcraft Mandatory Service Bulletin 
SB 28-4127. For any fuel cell that need replacing, replace with fuel 
cells listed in Beechcraft Mandatory Service Bulletin SB 28-4131.
    6. Do step (7)(d) of Part 1 of the Accomplishment Instructions 
in Beechcraft Mandatory Service Bulletin SB 28-4127. This step can 
be done concurrently with step (5) of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4131.
    7. Do steps (8) through (25) (Wheel Well and Nacelle Area and 
Final Check) of Part 1

[[Page 60389]]

of the Accomplishment Instructions in Beechcraft Mandatory Service 
Bulletin SB 28-4127.
    8. Do steps (6) through (10) of the Accomplishment Instructions 
in Beechcraft Mandatory Service Bulletin SB 28-4131.
    Note: Steps (21), (24), and (25) from task 7 and steps (8), (9), 
and (10) from task 8 can be done concurrently.

Appendix 3 to AD 2014* * *

    For Model G58 airplanes serial numbers TH-2360, TH-2361, TH-
2367, TH-2368, TH-2370, TH-2372, and TH-2373 that have not completed 
Beechcraft Mandatory Service Bulletin SB 28-4131, dated November 
2013 and have not completed Part 2 of Beechcraft Mandatory Service 
Bulletin SB 28-4127, dated June 2013.
    The information in the appendix cannot be used for direct 
compliance with the AD. All of the actions in paragraphs (g) and (h) 
of this AD must be completed for compliance with this AD. The 
following is a suggested order of tasks that may assist the mechanic 
in completing overlapping tasks associated with Beechcraft Mandatory 
Service Bulletin SB 28-4131, dated November 2013, and Part 2 of 
Beechcraft Mandatory Service Bulletin SB 28-4127, dated June 2013.

Suggested Order of Tasks

    1. Do steps (1) through (5) of the Accomplishment Instructions 
in Beechcraft Mandatory Service Bulletin SB 28-4131.
    2. Do steps (7) and (8) of the Accomplishment Instructions in 
Beechcraft Mandatory Service Bulletin SB 28-4131.
    3. Do steps (1) through (6) of Part 2 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127. 
For step (2), heat shields should have been previously removed for 
Beechcraft Mandatory Service Bulletin SB 28-4131.
    4. Do steps (7) through (11) of Part 2 of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4127.
    5. Do steps (6), (9), and (10) of the Accomplishment 
Instructions in Beechcraft Mandatory Service Bulletin SB 28-4131.
    Note: Steps (9) and (10) from task 5 and steps (10), and (11) 
from task 4 can be done concurrently.

    Issued in Kansas City, Missouri, on September 30, 2014.
Earl Lawrence,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 2014-23879 Filed 10-6-14; 8:45 am]
BILLING CODE 4910-13-P
```