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2018-09-04 GULFSTREAM AEROSPACE CORPORATION:
( c o r r e c t i o n )
Amendment 39-19260; Docket No. FAA-2017-1163; Product Identifier 2017-CE-041-AD.

TDATA NOTE:The FAA is correcting typos that incorrectly reference Customer
           Bulletin 238A as Customer Bulletin 283A. In all other respects,
           the original document remains the same.

(a) EFFECTIVE DATE

    This AD is effective June 11, 2018.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD  applies  to  the  following  Gulfstream Aerospace Corporation
    model airplanes that are certificated in any category:

(1) Model G-IV,  serial numbers (S/Ns) 1000 through 1399  having  Aircraft
    Service Change (ASC) 416A (MSG-3) incorporated;  and S/Ns 1400 through
    1535; and

(2) Model GIV-X, S/Ns 4001 through 4355.

(d) SUBJECT

    Joint Aircraft System Component (JASC)/Air Transport Association (ATA)
    of America Code 32, Landing Gear.

(e) UNSAFE CONDITION

    This AD was prompted by the  potential for fatigue cracks in the  main
    landing  gear (MLG)  actuator attachment  fitting that  had a  certain
    repair incorporated. We are issuing this AD to prevent failure of  the
    MLG actuator attachment. The unsafe condition, if not addressed, could
    compromise the  lateral support  of the  MLG during  ground maneuvers,
    possibly leading to collapse of the affected  MLG with consequent loss
    of control.  In addition, this condition could also cause the MLG side
    brace to fail,  which  could result in a  penetration of the wing fuel
    tank causing an uncontained fire.

(f) COMPLIANCE

    At whichever of the following  in  paragraphs (f)(1)  and  (f)(2) that
    occurs later, comply with the actions in paragraphs (g) through (i) of
    this AD, unless already done.

(1) Within  the  next  100 hours time-in-service  after June 11, 2018 (the
    effective date of this AD); or

(2) Within  the  next 3 months after June 11, 2018  (the effective date of
    this AD).

(g) INSPECT MAINTENANCE RECORDS

    Inspect  the  airplane  maintenance  records  to  determine  if repair
    SE05732102 for the MLG side brace fitting has been incorporated. To do
    this  inspection, use  the Accomplishment  Instructions in  Gulfstream
    G350 Customer Bulletin Number 192A; Gulfstream G450 Customer  Bulletin
    192A; Gulfstream  IV Customer  Bulletin Number  238A; Gulfstream  G300
    Customer Bulletin Number 238A;  and Gulfstream G400 Customer  Bulletin
    Number  238A;  all  dated June 15, 2017,  as  applicable.  The service
    information referenced in this  paragraph specifies sending a  service
    reply  card  back  to  Gulfstream  Aerospace  Corporation  if   repair
    SE05732102  for  the  MLG  side  brace  fitting  has  been  not   been
    incorporated. This action is not required in this AD.

(h) DETERMINE INITIAL AND REPETITIVE INSPECTION REQUIREMENTS

    If it is determined during the maintenance records inspection required
    in paragraph (g) of  this AD that repair  SE05732102 for the MLG  side
    brace  fitting  has  been  incorporated,  determine  the  initial  and
    repetitive   inspection   requirements   using   the    Accomplishment
    Instructions of the service information identified in paragraph (g) of
    this AD along with the following documents, as applicable. Comply with
    the inspection requirements as determined.

(1) Appendix A, Gulfstream Document GIV-SGER-553, Revision A, Instructions
    for Continued Airworthiness  for Gulfstream Repair Drawing SE05732102,
    dated December 14, 2016, to Gulfstream G350 Customer Bulletin No. 192A
    dated June 15, 2017;

(2) Appendix A, Gulfstream Document GIV-SGER-553, Revision A, Instructions
    for Continued Airworthiness  for Gulfstream Repair Drawing SE05732102,
    dated December 14, 2016, to Gulfstream G450 Customer Bulletin No. 192A
    dated June 15, 2017;

(3) Appendix A, Gulfstream Document GIV-SGER-553, Revision A, Instructions
    for Continued Airworthiness  for Gulfstream Repair Drawing SE05732102,
    dated December 14, 2016,  to Gulfstream IV Customer Bulletin No. 238A,
    dated June 15, 2017;

(4) Appendix A, Gulfstream Document GIV-SGER-553, Revision A, Instructions
    for Continued Airworthiness  for Gulfstream Repair Drawing SE05732102,
    dated December 14, 2016, to Gulfstream G300 Customer Bulletin No. 238A
    dated June 15, 2017; and

(5) Appendix A, Gulfstream Document GIV-SGER-553, Revision A, Instructions
    for Continued Airworthiness  for Gulfstream Repair Drawing SE05732102,
    dated December 14, 2016, to Gulfstream G400 Customer Bulletin No. 238A
    dated June 15, 2017.

(i) REVISE LIMITATIONS SECTION

    Insert the documents listed in paragraphs (h)(1)  through (5)  of this
    AD into  the Instructions  for  Continued Airworthiness of the Limita-
    tions section of the FAA-approved  maintenance program  (e.g., mainte-
    nance manual), as applicable.  The revised limitations sections estab-
    lish inspections of the repaired MLG side brace actuator fittings.

(j) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The  Manager,  Atlanta ACO Branch,  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
    certification  office,  send it to the attention of the person identi-
    fied in paragraph (k) of this AD.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector,  or  lacking a principal inspector,  the manager of the local
    flight standards district office/certificate holding district office.

(3) For  service information  that  contains  steps  that  are  labeled as
    Required for Compliance (RC), the provisions of paragraphs (g) through
    (i) of this AD 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, includ-
     ing substeps and identified figures,  can still be done as specified,
     and the airplane can be put back in an airworthy condition.

(k) RELATED INFORMATION

    For more information about this AD, contact William O Herderich, Aero-
    space Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College
    Park, Georgia 30337; phone: (404) 474-5547; fax: (404) 474-5605; email
    william.o.herderich@faa.gov.

(l) MATERIAL INCORPORATED BY REFERENCE

(1) The  Director  of  the  Federal Register approved the incorporation by
    reference (IBR) of  the service information  listed in this  paragraph
    under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use  this service information as applicable to do the actions
    required by this AD, unless the AD specifies otherwise.

(i) Gulfstream G350  Customer Bulletin Number 192A,  dated  June 15, 2017,
    that  incorporates  Appendix  A,   Gulfstream  Document  GIV-SGER-553,
    Revision A,  Instructions  for  Continued Airworthiness for Gulfstream
    Repair Drawing SE05732102, dated December 14, 2016.

(ii) Gulfstream G450 Customer Bulletin 192A, dated June 15, 2017, that in-
     corporates Appendix A, Gulfstream Document GIV-SGER-553,  Revision A,
     Instructions for Continued Airworthiness  for Gulfstream Repair Draw-
     ing SE05732102, dated December 14, 2016.

(iii) Gulfstream IV  Customer Bulletin Number 238A,  dated  June 15, 2017,
      that  incorporates  Appendix A,  Gulfstream  Document  GIV-SGER-553,
      Revision A,  Instructions for Continued Airworthiness for Gulfstream
      Repair Drawing SE05732102, dated December 14, 2016.

(iv) Gulfstream G300 Customer Bulletin Number 238A,  dated  June 15, 2017,
     that  incorporates  Appendix  A,  Gulfstream  Document  GIV-SGER-553,
     Revision A,  Instructions  for Continued Airworthiness for Gulfstream
     Repair Drawing SE05732102, dated December 14, 2016.

(v) Gulfstream G400  Customer Bulletin Number 238A,  dated  June 15, 2017,
    that  incorporates  Appendix  A,   Gulfstream  Document  GIV-SGER-553,
    Revision A,  Instructions  for  Continued Airworthiness for Gulfstream
    Repair Drawing SE05732102, dated December 14, 2016.

(3) For Gulfstream Aerospace Corporation service information identified in
    this AD,  contact  Gulfstream  Aerospace  Corporation,  P.O. Box 2206,
    Savannah, Georgia 31402-2206;  telephone: (800) 810-4853; fax 912-965-
    3520; email: pubs@gulfstream.com; internet: http://www.gulfstream.com/
    product_support/technical_pubs/pubs/index.htm.

(4) You may view this service information at FAA,  Policy  and  Innovation
    Division, 901 Locust, Kansas City, Missouri 64106.  For information on
    the availability of this material at the FAA, call (816) 329-4148.

(5) You  may  view  this  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.

Issued in Kansas City, Missouri on June 5, 2018. David R Showers, Aircraft
Certification Service, Acting Deputy Director, Policy and Innovation Divi-
sion, AIR-601.

FOR FURTHER INFORMATION CONTACT: William O. Herderich, Aerospace Engineer,
Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, Georgia 30337
phone: (404) 474-5547; fax: (404) 474-5605; email: william.o.herderich@faa
.gov.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-1163; Product Identifier 2017-CE-041-AD; Amendment
39-19260; AD 2018-09-04]
RIN 2120-AA64

Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is correcting an airworthiness directive (AD)
that published in the Federal Register. The AD applies to certain
Gulfstream Aerospace Corporation Models G-IV and GIV-X airplanes.
Paragraphs (h)(3) through (5) of the AD incorrectly reference Customer
Bulletin 238A as Customer Bulletin 283A. This document corrects that
error. In all other respects, the original document remains the same;
however for the sake of clarity, we are publishing the entire rule in
the Federal Register.

DATES: The effective date of AD 2018-09-04 remains June 11, 2018.
The Director of the Federal Register approved the incorporation by reference
of certain publications listed in this AD as of June 11, 2018 (83 FR 19922,
May 7, 2018).

ADDRESSES: For service information identified in this final rule,
contact Gulfstream Aerospace Corporation, P.O. Box 2206, Savannah,
Georgia 31402-2206; telephone: (800) 810-4853; fax 912-965-3520; email:
pubs@gulfstream.com; internet: http://www.gulfstream.com/product_support/technical_pubs/pubs/index.htm.
You may view this service information at the FAA, Policy and Innovation Division,
901 Locust, Kansas City, Missouri 64106. For information on the
availability of this material at the FAA, call (816) 329-4148. It is
also available on the internet at http://www.regulations.gov by
searching for and locating Docket No. FAA-2017-1163.

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-2017-
1163; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, the regulatory evaluation, any comments received, and
other information. The address for Docket Operations (phone: 800-647-
5527) is Docket Operations, 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: William O. Herderich, Aerospace
Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park,
Georgia 30337; phone: (404) 474-5547; fax: (404) 474-5605; email:
william.o.herderich@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to certain Gulfstream
Aerospace Corporation Models G-IV and GIV-X airplanes. The NPRM
published in the Federal Register on December 12, 2017 (82 FR 58362).
The NPRM was prompted by the potential for fatigue cracks developing in
the main landing gear actuator attachment fitting that had a certain
repair incorporated. The NPRM proposed to require incorporating new
revisions into the Instructions for Continued Airworthiness of the Limitations
section of the FAA-approved maintenance program (e.g., maintenance manual)
that establish an inspection cycle for the repaired MLG side brace actuator
fittings. We are issuing this AD to address the unsafe condition on
these products.

Comments

We gave the public the opportunity to participate in developing
this final rule. The following presents the comment received on the
NPRM and the FAA's response to the comment.

Request To Change Compliance Time

Gulfstream Aerospace Corporation stated that the compliance time
for the actions required in the proposed AD should be changed to be in-
line with the service information incorporated by reference in the
proposed AD.
Gulfstream Aerospace Corporation stated that the compliance time
specified in the service information incorporated by reference in the
proposed AD is 24 months from September 16, 2016. Gulfstream Aerospace
Corporation believes that the 100-hour time-in-service (TIS) compliance
time after the effective date of the proposed AD significantly reduces
the original compliance time and may cause an undue burden on the
owner/operators of the affected airplanes.
We agree that the compliance time can be changed to more fully
coincide with the service bulletin without affecting the safety risk of
this AD. We have changed the compliance time of this AD to ``Within the
next 100 hours time-in-service (TIS) after the effective date of this
AD or within the next 3 months after the effective date of this AD,
whichever occurs later.'' The 3-month compliance time combined with the
35 days after publication in the Federal Register effective date should
coincide with the compliance time in the service bulletin.

Conclusion

We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting
this final rule as proposed except for minor editorial changes. We have
determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

We reviewed Gulfstream G350 Customer Bulletin Number 192A, dated
June 15, 2017, including Appendix A, Gulfstream Document GIV-SGER-553,
Revision A, Instructions for Continued Airworthiness for Gulfstream
Repair Drawing SE05732102, dated December 14, 2016 (for model
Gulfstream G350); Gulfstream G450 Customer Bulletin 192A, dated June
15, 2017, including Appendix A, Gulfstream Document GIV-SGER-553,
Revision A, Instructions for Continued Airworthiness for Gulfstream
Repair Drawing SE05732102, dated December 14, 2016 (for model
Gulfstream G450); Gulfstream IV Customer Bulletin Number 238A, dated
June 15, 2017, including Appendix A, Gulfstream Document GIV-SGER-553,
Revision A, Instructions for Continued Airworthiness for Gulfstream
Repair Drawing SE05732102, dated December 14, 2016 (for model
Gulfstream IV); Gulfstream G300 Customer Bulletin Number 238A, dated
June 15, 2017, including Appendix A, Gulfstream Document GIV-SGER-553,
Revision A, Instructions for Continued Airworthiness for Gulfstream
Repair Drawing SE05732102, dated December 14, 2016 (for model
Gulfstream G300); and Gulfstream G400 Customer Bulletin Number 238A,
dated June 15, 2017, including Appendix A, Gulfstream Document GIV-
SGER-553, Revision A, Instructions for Continued Airworthiness for
Gulfstream Repair Drawing SE05732102, dated December 14, 2016 (for
model Gulfstream G400). For the applicable models, the service
information describes procedures for inspecting maintenance records to
determine if repair SE05732102 for the main landing gear side brace
fitting has been incorporated and determining initial and repetitive
inspection requirements for the main landing gear side brace fitting.
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 AD affects 709 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:

Estimated Costs

Action Labor cost Parts cost Cost per product Cost on U.S. operators
Inspect Maintenance Records 1 work-hour x $85 per hour = $85 Not applicable $85 $60,265
Incorporate new revisions into the Instructions for Continued Airworthiness of the Limitations section of the FAA-approved maintenance program (e.g., maintenance manual). 1 work-hour x $85 per hour = $85 Not applicable 85 60,265

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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to small airplanes, gliders, domestic
business jet transport airplanes, and associated appliances to the Director
of the Policy and Innovation Division.

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

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]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):