80 FR 80295 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 80, Issue 247 (December 24, 2015)

We are revising an earlier proposed airworthiness directive (AD) for all Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. The NPRM proposed to supersede Airworthiness Directive (AD) 2013-22-19, which requires inspecting to determine if fuel boost pumps having a certain part number are installed, replacing the fuel boost pumps having a certain part number, and revising the airplane maintenance or inspection program to include revised instructions for continued airworthiness. The NPRM also proposed to require revising the airplane maintenance program to include a fuel leak check of the fuel boost pumps, using new service information. The NPRM was prompted by reports of two independent types of failure of the fuel boost pump: overheat damage on the internal components and external housing, and fuel leakage. This action revises the NPRM by reducing the compliance time for revising the airplane maintenance program. We are proposing this supplemental NPRM (SNPRM) to prevent fuel leakage in combination with a capacitor clearance issue, which could result in an uncontrolled fire in the wheel well. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

[Federal Register Volume 80, Number 247 (Thursday, December 24, 2015)]
[Proposed Rules]
[Pages 80295-80299]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-30810]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0651; Directorate Identifier 2014-NM-043-AD]
RIN 2120-AA64


Airworthiness Directives; Gulfstream Aerospace Corporation 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of 
comment period.

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SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) for all Gulfstream Aerospace Corporation Model GV and GV-SP 
airplanes. The NPRM proposed to supersede Airworthiness Directive (AD) 
2013-22-19, which requires inspecting to determine if fuel boost pumps 
having a certain part number are installed, replacing the fuel boost 
pumps having a certain part number, and revising the airplane 
maintenance or inspection program to include revised instructions for 
continued airworthiness. The NPRM also proposed to require revising the 
airplane maintenance program to include a fuel leak check of the fuel 
boost pumps, using new service information. The NPRM was prompted by 
reports of two independent types of failure of the fuel boost pump: 
overheat damage on the internal components and external housing, and 
fuel leakage. This action revises the NPRM by reducing the compliance 
time for revising the airplane maintenance program. We are proposing 
this supplemental NPRM (SNPRM) to prevent fuel leakage in combination 
with a capacitor clearance issue, which could result in an uncontrolled 
fire in the wheel well. Since these actions impose an additional burden 
over that proposed in the NPRM, we are reopening the comment period to 
allow the public the chance to comment on these proposed changes.

DATES: We must receive comments on this SNPRM by February 8, 2016.

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

[[Page 80296]]

W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. 
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912-965-
3520; email [email protected]; Internet http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm. You may view this 
referenced service information at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue SW., Renton, WA. 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 by searching for and locating Docket No. FAA-2014-
0651; 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: Sanjana Murthy, Aersopace Engineer, 
ACE-118A, FAA, Atlanta Aircraft Certification Office, 1701 Columbia 
Avenue, College Park, GA 30337; telephone: 404-474-5573; fax: 404-474-
5567; email: [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2014-0651; 
Directorate Identifier 2014-NM-043-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 issued an NPRM to amend 14 CFR part 39 to supersede AD 2013-22-
19, Amendment 39-17651 (78 FR 72554, December 3, 2013), which applies 
to all Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. 
The NPRM published in the Federal Register on October 1, 2014 (79 FR 
59162). The NPRM proposed to continue to require inspecting to 
determine if fuel boost pumps having a certain part number are 
installed, replacing the fuel boost pumps having a certain part number, 
and revising the airplane maintenance or inspection program to include 
revised instructions for continued airworthiness. The NPRM also 
proposed to require revising the airplane maintenance program to 
include a fuel leak check of the fuel boost pumps, using new service 
information.

Actions Since Previous NPRM (79 FR 59162, October 1, 2014) Was Issued

    Since we issued the NPRM (79 FR 59162, October 1, 2014), we have 
determined it is necessary to reduce the compliance time for revising 
the airplane maintenance or inspection program in order to address the 
identified unsafe condition in a timely manner. Paragraph (i) of the 
proposed AD specifies a compliance time of ``within 500 flight hours 
after the effective date of this AD'' to accomplish the revision, which 
incorporates the fuel leak check inspection of the fuel boost pumps. 
The leak check is intended to be performed at 500-hour increments after 
the installation of the part number (P/N) 1159SCP500-7 boost pump. 
However, operators that have already installed the P/N 1159SCP500-7 
boost pump would not be required to perform the leak check until after 
the maintenance or inspection program is revised, i.e., within 500 
flight hours after the effective date of the AD instead of within 500 
flight hours after installation. We have determined a compliance time 
of ``within 30 days after the effective date of this AD'' represents an 
appropriate interval of time to revise the airplane maintenance or 
inspection program. We have revised paragraph (i) of this proposed AD 
accordingly.

Comments

    We gave the public the opportunity to participate in developing 
this proposed AD. The following presents the comments received on the 
NPRM (79 FR 59162, October 1, 2014) and the FAA's response to each 
comment.

Request To Use Later Revision of the Service Information

    Gulfstream requested that the FAA reference the upcoming revision 
to the airworthiness limitations section of the GV, G500, and G550 
maintenance manuals. Gulfstream stated that the maintenance manuals 
will include a revised fuel leak check interval of 500 hours 50 hours. Gulfstream stated that drafts of the maintenance 
manuals were scheduled to be submitted to the FAA by December 2014, 
with FAA approval expected. Gulfstream also stated that the revisions 
to the airplane maintenance program include revised instructions for 
continued airworthiness to avoid future AD revisions on this subject. 
Gulfstream stated that AD 2013-22-19, Amendment 39-17651 (78 FR 72554, 
December 3, 2013), references the 05-20-00, Table 20 Fuel Boost Pump 
fuel leak check interval of 500 hours, which would prohibit the 50-hour provision that the Gulfstream safety assessment allows, 
limiting the flexibility of Gulfstream's operators to perform this fuel 
leak check concurrently with other scheduled maintenance.
    We have reviewed the supporting data for this request and we agree 
with the request to change the compliance time. We have revised 
paragraph (i) of this proposed AD to accommodate this request. In order 
to decrease the burden on operators, we are adding 50 hours to the 
compliance time, which will enable operators to complete the 
requirements of this proposed AD as well as their mandatory inspection 
requirement during the same overhaul.
    Operators may request approval to use a later revision of the 
referenced service information, when it is approved, as an alternative 
method of compliance (AMOC) under the provisions of paragraph (m) of 
this proposed AD.

Request To Revise the Compliance Time

    Gulfstream requested that a compliance time specified in paragraph 
(i)(2) of the proposed AD (79 FR 59162, October 1, 2014) be revised. 
Gulfstream requested that the following language be included in 
paragraph (i)(2) of the proposed AD, which is for airplanes on which 
the inspection required by paragraph (g) of the proposed AD reveals 
that a fuel boost pump with

[[Page 80297]]

Gulfstream P/N 1159SCP500-7 has been installed:

    The initial compliance time . . . is within 500 flight hours 
after installation of the P/N 11 59SCP500-7 pump, or within 50 
flight hours after doing the inspection required by paragraph (g) of 
this AD if 500 flight hours have accumulated since installation of 
the P/N 1159SCP500-7 pump and an initial leak check of the pump has 
not been accomplished.

    We agree to revise the compliance time. The leak check is intended 
to be performed at 500-hour increments  50 flight hours 
after the installation of the P/N 1159SCP500-7 boost pump. We have 
added new paragraph (i)(2)(i) to this proposed AD to specify 
compliances times relative to installation of the P/N 1159SCP500-7 
pump.

FAA's Determination

    We are proposing this SNPRM 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. 
Certain changes described above expand the scope of the proposed AD (79 
FR 59162, October 1, 2014). As a result, we have determined that it is 
necessary to reopen the comment period to provide additional 
opportunity for the public to comment on this SNPRM.

Proposed Requirements of This SNPRM

    This SNPRM would require inspecting to determine if fuel boost 
pumps having a certain part number are installed, replacing the fuel 
boost pumps having a certain part number, and revising the airplane 
maintenance or inspection program to include revised instructions for 
continued airworthiness.

Related Service Information Under 1 CFR Part 51

    We have reviewed Gulfstream G500 Customer Bulletin 122, dated April 
11, 2012 (for Model GV-SP airplanes designated as G500), which 
describes procedures for inspecting and replacing the fuel boost pumps.
    We have also reviewed the following service information, as 
applicable, which describes, among other actions, a fuel leak check of 
the fuel boost pumps and inspection intervals:
     Table 18, 500 Flight Hours Scheduled Inspection Table, in 
Section 05-20-00, of Chapter 5, Time Limits/Maintenance Checks, of the 
Gulfstream V Maintenance Manual, Revision 42, dated June 20, 2013;
     Task 28-26-01, Fuel Boost Pumps--Fuel Leak Check, of 
Chapter 28, Fuel, of the Gulfstream V Maintenance Manual, Revision 42, 
dated June 20, 2013;
     Task 28-26-01, Fuel Boost Pumps--Fuel Leak Checks, in 
Table 20, 500 Flight Hours Scheduled Inspection Table, in Section 05-
20-00, of Chapter 5, Time Limits/Maintenance Checks, of the Gulfstream 
G500 Maintenance Manual, Revision 23, dated June 20, 2013;
     Task 28-26-01, Fuel Boost Pumps--Fuel Leak Check, of 
Section 26, Fuel Boost Pumps, of Chapter 28, Fuel, of the Gulfstream 
G550 Maintenance Manual, Revision 23, dated June 20, 2013;
     Task 28-26-01, Fuel Boost Pumps--Fuel Leak Check, in Table 
20, 500 Flight Hours Scheduled Inspection Table, in Section 05-20-00, 
of Chapter 5, Time Limits/Maintenance Checks, of the Gulfstream G550 
Maintenance Manual, Revision 23, dated June 20, 2013; and
     Task 28-26-01, Fuel Boost Pumps--Fuel Leak Check, of 
Section 26, Fuel Boost Pumps, of Chapter 28, Fuel, of the Gulfstream 
G550 Maintenance Manual, Revision 23, dated June 20, 2013.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this proposed AD would affect 357 airplanes of 
U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                        Cost on
                    Action                                Labor cost               Parts     Cost per     U.S.
                                                                                    cost     product   operators
----------------------------------------------------------------------------------------------------------------
Inspection to determine if a certain part      1 work-hour x $85 per hour = $85         $0        $85    $30,345
 number is installed [retained actions from
 AD 2013-22-19, Amendment 39-17651 (78 FR
 72554, December 3, 2013)].
Maintenance program revision [new proposed     1 work-hour x $85 per hour = $85          0         85     30,345
 action].
----------------------------------------------------------------------------------------------------------------

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

                            On-Condition Cost
------------------------------------------------------------------------
                                                               Cost per
            Action                 Labor cost     Parts cost    product
------------------------------------------------------------------------
Replacement...................  24 work-hours x      $7,600      $9,640
                                 $85 per hour =
                                 $2,040.
------------------------------------------------------------------------

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

[[Page 80298]]

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 removing Airworthiness Directive (AD) 
2013-22-19, Amendment 39-17651 (78 FR 72554, December 3, 2013), and 
adding the following new AD:

Gulfstream Aerospace Corporation: FAA-2014-0651; Directorate 
Identifier 2014-NM-043-AD.

(a) Comments Due Date

    We must receive comments by February 8, 2016.

(b) Affected ADs

    This AD replaces AD 2013-22-19, Amendment 39-17651 (78 FR 72554, 
December 3, 2013).

(c) Applicability

    This AD applies to all Gulfstream Aerospace Corporation Model GV 
and GV-SP airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 28, Fuel.

(e) Unsafe Condition

    This AD was prompted by reports of two independent types of 
failure of the fuel boost pump: overheat damage on the internal 
components and external housing, and fuel leakage. We are issuing 
this AD to prevent fuel leakage in combination with a capacitor 
clearance issue, which could result in an uncontrolled fire in the 
wheel well.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Retained Inspection To Determine the Part Number, With Revised 
Service Information

    This paragraph restates the actions required by paragraph (g) of 
AD 2013-22-19, Amendment 39-17651 (78 FR 72554, December 3, 2013), 
with revised service information. Within 36 months after January 7, 
2014 (the effective date of AD 2013-22-19), inspect the fuel boost 
pumps to determine whether Gulfstream part number (P/N) 1159SCP500-5 
is installed, in accordance with the Accomplishment Instructions of 
the applicable service information identified in paragraphs (g)(1), 
(g)(2), and (g)(3) of this AD; including Triumph Aerostructures 
Service Bulletin SB-TAGV/GVSP-28-JG0162, dated August 30, 2011; and 
GE Service Bulletin 31760-28-100, dated February 15, 2011. A review 
of airplane maintenance records is acceptable in lieu of this 
inspection if the part number of the fuel boost pumps can be 
conclusively determined from that review.
    (1) For Model GV airplanes: Gulfstream V Customer Bulletin 197, 
dated April 11, 2012.
    (2) For Model GV-SP airplanes designated as G500: Gulfstream 
G500 Customer Bulletin 122, dated April 11, 2012; or Gulfstream G550 
Customer Bulletin 122, dated April 11, 2012.
    (3) For Model GV-SP airplanes designated as G550: Gulfstream 
G550 Customer Bulletin 122, dated April 11, 2012.

(h) Retained Replacement With Revised Service Information

    This paragraph restates the actions required by paragraph (h) of 
AD 2013-22-19, Amendment 39-17651 (78 FR 72554, December 3, 2013), 
with revised service information. If the inspection required by 
paragraph (g) of this AD reveals a fuel boost pump with Gulfstream 
P/N 1159SCP500-5: Within 36 months after January 7, 2014 (the 
effective date of AD 2013-22-19), replace the fuel boost pump with a 
serviceable pump having Gulfstream P/N 1159SCP500-7, in accordance 
with the applicable service information identified in paragraphs 
(h)(1), (h)(2), and (h)(3) of this AD; including Triumph 
Aerostructures Service Bulletin SB-TAGV/GVSP-28-JG0162, dated August 
30, 2011; and GE Service Bulletin 31760-28-100, dated February 15, 
2011.
    (1) For Model GV airplanes: Gulfstream V Customer Bulletin 197, 
dated April 11, 2012.
    (2) For Model GV-SP airplanes designated as G500: Gulfstream 
G500 Customer Bulletin 122, dated April 11, 2012; or Gulfstream G550 
Customer Bulletin 122, dated April 11, 2012.
    (3) For Model GV-SP airplanes designated as G550: Gulfstream 
G550 Customer Bulletin 122, dated April 11, 2012.

(i) New Revision of the Maintenance or Inspection Program

    Within 30 days after the effective date of this AD, revise the 
airplane maintenance or inspection program, as applicable, to 
include the fuel leak check inspection of the fuel boost pumps 
specified in the applicable task identified in paragraph (j) of this 
AD.
    (1) For airplanes on which fuel boost pump Gulfstream P/N 
1159SCP500-5 has been replaced in accordance with paragraph (h) of 
this AD: The initial compliance time for the leak check inspection 
specified in the applicable task identified in paragraph (j) of this 
AD is within 550 flight hours after doing the replacement specified 
in paragraph (h) of this AD, or within 30 days after the effective 
date of this AD, whichever occurs later.
    (2) For airplanes on which the inspection required by paragraph 
(g) of this AD reveals that a fuel boost pump with Gulfstream P/N 
1159SCP500-7 has been installed: The initial compliance time for the 
leak check inspection specified in the applicable task identified in 
paragraph (j) of this AD, is at the later of the times specified in 
paragraphs (i)(2)(i) and (i)(2)(ii) of this AD.
    (i) Within 550 flight hours after the installation of the P/N 
1159SCP500-7 pump; except if 550 flight hours have accumulated since 
installation of the P/N 1159SCP500-7 pump and an initial leak check 
of the pump has not been accomplished, the compliance time is within 
50 flight hours after doing the inspection required by paragraph (g) 
of this AD.
    (ii) Within 30 days after the effective date of this AD.

(j) Service Information for Maintenance Program Revision

    Use the applicable service information specified in paragraph 
(j)(1), (j)(2), or (j)(3) of this AD to revise the airplane 
maintenance or inspection program, as applicable, as required by 
paragraph (i) of this AD.
    (1) For Model GV airplanes: Use table 18, ``500 Flight Hours 
Scheduled Inspection Table,'' in section 05-20-00, of chapter 5, Time 
Limits/Maintenance Checks; and task 28-26-01, Fuel Boost Pumps--Fuel 
Leak Check, of chapter 28, Fuel; of the Gulfstream V Maintenance 
Manual, Revision 42, dated June 20, 2013.
    (2) For Model GV-SP airplanes designated as G500: Use task 28-26-
01, Fuel Boost Pumps--Fuel Leak Checks, in table 20, ``500 Flight Hours 
Scheduled Inspection Table,'' in section 05-20-00, of chapter 5, Time 
Limits/Maintenance Checks; and task 28-26-01, Fuel Boost Pumps--Fuel 
Leak Check, of section 26, Fuel Boost Pumps, of chapter 28, Fuel; of 
the Gulfstream

[[Page 80299]]

G500 Maintenance Manual, Revision 23, dated June 20, 2013.
    (3) For Model GV-SP airplanes designated as G550: Use task 28-26-
01, Fuel Boost Pumps--Fuel Leak Check, in table 20, ``500 Flight Hours 
Scheduled Inspection Table,'' in section 05-20-00, of chapter 5, Time 
Limits/Maintenance Checks; and task 28-26-01, Fuel Boost Pumps--Fuel 
Leak Check, of section 26, Fuel Boost Pumps, of chapter 28, Fuel; of 
the Gulfstream G550 Maintenance Manual, Revision 23, dated June 20, 
2013.

(k) No Alternative Actions or Intervals

    After accomplishing the revision required by paragraph (i) of this 
AD, no alternative actions (e.g., inspections) or intervals may be used 
unless the actions or intervals are approved as an alternative method 
of compliance in accordance with the procedures specified in paragraph 
(m) of this AD.

(l) Parts Installation Prohibition

    As of January 7, 2014 (the effective date of AD 2013-22-19, 
Amendment 39-17651 (78 FR 72554, December 3, 2013)), no person may 
install a fuel boost pump having Gulfstream P/N 1159SCP500-5 on any 
airplane.

(m) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Atlanta 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 paragraph (n)(1) 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.
    (3) AMOCs approved for AD 2013-22-19, Amendment 39-17651 (78 FR 
72554, December 3, 2013), are approved as AMOCs for the corresponding 
provisions of this AD.
    (4) For service information that contains steps that are labeled as 
Required for Compliance (RC), the provisions of paragraphs (m)(4)(i) 
and (m)(4)(ii) apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to comply with 
the AD. An AMOC is required for any deviations to RC steps, including 
substeps and identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC steps, 
including substeps and identified figures, can still be done as 
specified, and the airplane can be put back in an airworthy condition.

(n) Related Information

    (1) For more information about this AD, contact Sanjana Murthy, 
Aersopace Engineer, ACE-118A, FAA, Atlanta Aircraft Certification 
Office, 1701 Columbia Avenue, College Park, GA 30337; telephone: 404-
474-5573; fax: 404-474-5567; email: [email protected].
    (2) For service information identified in this AD, contact 
Gulfstream Aerospace Corporation, Technical Publications Dept., P.O. 
Box 2206, Savannah, GA 31402-2206; telephone 800-810-4853; fax 912 965-
3520; email [email protected]; Internet http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm. You may view this 
referenced service information at the FAA, Transport Airplane 
Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the 
availability of this material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on November 24, 2015.
Jeffrey E. Duven,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2015-30810 Filed 12-23-15; 8:45 am]
BILLING CODE 4910-13-P