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2022-21-16	GULFSTREAM AEROSPACE LP (TYPE CERTIFICATE PREVIOUSLY HELD BY ISRAEL AIRCRAFT INDUSTRIES, LTD.): Amendment 39-22215; Docket No. FAA-2022-0887; Project Identifier MCAI-2022-00051-T.

(a) EFFECTIVE DATE

    This airworthiness directive (AD) is effective December 21, 2022.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to Gulfstream Aerospace LP  Model Gulfstream G150 air-
    planes, certificated in any category, as identified in The Civil Avia-
    tion Authority of Israel (CAAI) AD ISR I-57-2021-12-3 dated January 1,
    2022 (CAAI AD ISR I-57-2021-12-3).

(d) SUBJECT

    Air Transport Association (ATA) of America Code 57, Wings.

(e) UNSAFE CONDITION

    This AD was prompted by  reports that wing flap fairing  debonding and
    corrosion were discovered at  lower skin of rib  3 and rib 11  on both
    wings. The FAA  is issuing this  AD to address  flap fairing debonding
    and moisture intrusion  that might lead  to lower wing  skin corrosion
    and cracking on  both wings, and  reduced structural integrity  of the
    wings.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) REQUIRED ACTIONS

    Except as specified in paragraph (h)  of this AD:  Comply with all re-
    quired actions and compliance times specified in,  and  in  accordance
    with, CAAI AD ISR I-57-2021-12-3.

(h) EXCEPTIONS TO SERVICE INFORMATION SPECIFICATIONS

(1) Where CAAI AD ISR I-57-2021-12-3 refers to its effective date, this AD
    requires using the effective date of this AD.

(2) Where the Compliance paragraph  of CAAI AD ISR I-57-2021-12-3 requires
    compliance at a certain time,  replace  the text "at the next suitable
    planned maintenance inspection  within  the  next 24 months  from  the
    effective date of this AD" with "within 24 months  after the effective
    date of this AD."

(3) Where the Action  paragraph  of  CAAI AD ISR I-57-2021-12-3  refers to
    certain  service information,  replace  the  text  "Gulfstream Service
    Bulletin No.150-57-197, dated January 01, 2022,  or later approved re-
    vision," with "Gulfstream Service Bulletin No. 150-57-197, Revision 1,
    dated June 16, 2022, or later approved revision."

(4) Where the service information  specified in CAAI AD ISR I-57-2021-12-3
    specifies to report to Gulfstream if "cracks were discovered" and "for
    any fairing installation location with one  or  more grid squares with
    thickness reduction of greater than 10%" for this AD, cracks and fair-
    ing installation locations with one  or  more grid squares with thick-
    ness reduction  of greater than 10% must be  repaired  before  further
    flight using a method approved by the Manager, Large Aircraft Section,
    International Validation Branch,  FAA;  or CAAI;  or CAAI's authorized
    Designee. If approved by the authorized Designee,  the  approval  must
    include the Designee's authorized signature.

(i) NO REPORTING REQUIREMENT

    Although the service information  referenced in CAAI AD ISR I-57-2021-
    12-3 specifies to submit certain information to the manufacturer, this
    AD does not include that requirement.

(j) OTHER FAA AD PROVISIONS

    The following provisions also apply to this AD:

(1) Alternative Methods of Compliance (AMOCs):  The Manager, International
    Validation 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
    responsible Flight Standards Office, as appropriate. If sending infor-
    mation directly to the International Validation Branch, send it to the
    attention of the person identified in paragraph (k) of this AD. Infor-
    mation may be emailed to: 9-AVS-AIR-730-AMOC@faa.gov. Before using any
    approved AMOC, notify your appropriate principal inspector, or lacking
    a principal inspector, the manager of the responsible Flight Standards
    Office.

(2) Contacting the Manufacturer:  For any requirement in this AD to obtain
    instructions from a manufacturer,  the  instructions  must  be  accom-
    plished using a method approved by the Manager,  International Valida-
    tion Branch, FAA; or the Civil Aviation Authority of Israel (CAAI); or
    the CAAI's authorized Designee.  If approved by the CAAI Designee, the
    approval must include the Designee's authorized signature.

(k) ADDITIONAL INFORMATION

    For more information about this AD, contact Dan Rodina, Aerospace Eng-
    ineer, Large Aircraft Section,  International Validation Branch,  FAA,
    2200 South 216th Street, Des Moines, WA 98198; telephone 206-231-3225;
    email dan.rodina@faa.gov.

(l) MATERIAL INCORPORATED BY REFERENCE

(1) The Director of the Federal Register  approved  the  incorporation  by
    reference 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 this AD specifies otherwise.

(i) Civil Aviation Authority of Israel (CAAI) AD ISR I-57-2021-12-3, dated
    January 1, 2022.

(ii) [Reserved]

(3) For CAAI  AD ISR I-57-2021-12-3,  contact  Civil Aviation Authority of
    Israel (CAAI), PO Box 1101, Golan Street, Airport City, 70100, Israel;
    telephone 972-3-9774665; fax 972-3-9774592; email aip@mot.gov.il.  You
    may find this CAAI AD on the CAAI website at caa.gov.il.

(4) You may view this material at the FAA, Airworthiness Products Section,
    Operational Safety Branch,  2200 South 216th St.,  Des Moines, WA. For
    information on the availability of this material at the FAA, call 206-
    231-3195.

(5) You may view  this material  that is incorporated  by reference at the
    National Archives and Records Administration (NARA).  For  information
    on the availability of this material at NARA, email fr.inspection@nara
    .gov,  or go to:  www.archives.gov/federal-register/cfr/ibr-locations.
    html.

Issued on October 7, 2022.Christina Underwood, Acting Director, Compliance
& Airworthiness Division, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Dan Rodina,  Aerospace  Engineer,  Large
Aircraft Section, International Validation Branch,  FAA,  2200 South 216th
Street, Des Moines, WA 98198; telephone 206-231-3225; email dan.rodina@faa
.gov.

PREAMBLE

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0887; Project Identifier MCAI-2022-00051-T;
Amendment 39-22215; AD 2022-21-16]
RIN 2120-AA64

Airworthiness Directives; Gulfstream Aerospace LP (Type
Certificate Previously Held by Israel Aircraft Industries, Ltd.)
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Gulfstream Aerospace LP Model Gulfstream G150 airplanes. This
AD was prompted by reports that wing flap fairing debonding and
corrosion were discovered at certain areas of the lower skin on both
wings. This AD requires an inspection for corrosion in certain areas of
the wing skin fairings, additional inspections if necessary, resealing
the fairings with new fillet seal, and applicable corrective actions,
as specified in a Civil Aviation Authority of Israel (CAAI) AD, which
is incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.

DATES: This AD is effective December 21, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of December 21,
2022.

ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2022-0887; 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 mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
For material incorporated by reference (IBR) in this AD,
contact Civil Aviation Authority of Israel (CAAI), P.O. Box 1101, Golan
Street, Airport City, 70100, Israel; telephone 972-3-9774665; fax 972-
3-9774592; email aip@mot.gov.il. You may find this material on the CAAI
website at caa.gov.il.
You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th St., Des
Moines, WA. For information on the availability of this material at the
FAA, call 206-231-3195. It is also available in the AD docket at
regulations.gov under Docket No. FAA-2022-0887.

FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, Large
Aircraft Section, International Validation Branch, FAA, 2200 South
216th Street, Des Moines, WA 98198; telephone 206-231-3225; email
dan.rodina@faa.gov.

SUPPLEMENTARY INFORMATION:

Background

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Gulfstream
Aerospace LP Model Gulfstream G150 airplanes. The NPRM published in the
Federal Register on July 21, 2022 (87 FR 43459). The NPRM was prompted
by AD ISR I-57-2021-12-3, dated January 1, 2022, issued by CAAI, which
is the aviation authority for Israel (referred to after this
as the MCAI). There were reports that wing flap fairing debonding and
corrosion were discovered at the lower skin of rib 3 and rib 11 on both
wings. The MCAI states that the reason for the AD is to prevent the
possibility of flap fairing debonding, moisture intrusion and wing
lower skin corrosion at rib 3 and rib 11.
In the NPRM, the FAA proposed to require an inspection for
corrosion in certain areas of the wing skin fairings, additional
inspections if corrosion is found and a measurement of the thickness of
the remaining wing skin if necessary, resealing the fairings with new
fillet seal, and applicable corrective actions. The FAA is issuing this
AD to address flap fairing debonding and moisture intrusion that might
lead to lower wing skin corrosion and cracking on both wings, and
reduced structural integrity of the wings.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2022-0887.

Discussion of Final Airworthiness Directive

Comments

The FAA received no comments on the NPRM or on the determination of
the cost to the public.

Conclusion

This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA reviewed the relevant data, and determined
that air safety requires adopting this AD as proposed. Accordingly, the
FAA is issuing this AD to address the unsafe condition on this product.
Except for minor editorial changes, this AD is adopted as proposed in
the NPRM. None of the changes will increase the economic burden on any
operator.

Related Service Information Under 1 CFR Part 51

CAAI AD ISR I-57-2021-12-3, dated January 1, 2022, specifies
procedures for an inspection for corrosion in the area of the wing skin
(or doubler if installed) under the rib 3 and rib 11 fairings, a
penetration or eddy current inspection for cracks if corrosion was
found, a measurement of the thickness of remaining wing skin (or
doubler) if no cracks were found, resealing of rib 3 and rib 11
fairings with new fillet seal, and applicable corrective actions.
Corrective actions include cleaning and removing corrosion, crack
repair, and repair of fairing installation locations with a certain
thickness reduction.
This material 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

The FAA estimates that this AD affects 87 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:

Estimated Costs for Required Actions

Labor cost	Parts cost	Cost per product	Cost on U.S. operators
29 work-hours x $85 per hour = $2,465	Minimal	$2,465	$214,455

The FAA estimates the following costs to do any necessary on-
condition action that would be required based on the results of any
required actions. The FAA has no way of determining the number of
aircraft that might need these on-condition actions:

Estimated Costs of On-condition Actions *

Labor cost	Parts cost	Cost per product
Up to 10 work-hours x $85 per hour = $850	$0	Up to $850

* The FAA has received no definitive data on which to base the cost
estimates for the on-condition repairs specified in this AD.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is 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) Will not affect intrastate aviation in Alaska, and
(3) 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 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: