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PROPOSED AD GULFSTREAM AEROSPACE LP (TYPE CERTIFICATE PREVIOUSLY HELD BY ISRAEL AIRCRAFT INDUSTRIES, LTD.): Docket No. FAA-2022-0887; Project Identifier MCAI-2022-00051-T.
(a) COMMENTS DUE DATE

    The FAA must receive comments on this airworthiness directive (AD)  by
    September 6, 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
    fairing  installation locations  with one  or more  grid squares  with
    thickness  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, Large Aircraft
    Section, 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 information  directly to  the Large  Aircraft
    Section, International Validation Branch, send it to the attention  of
    the person identified in paragraph (k)(2) of this AD. Information  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
    accomplished using a  method approved by  the Manager, Large  Aircraft
    Section, International Validation 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) RELATED INFORMATION

(1) For CAAI AD ISR I-57-2021-12-3, dated January 01, 2022,  contact Civil
    Aviation Authority of Israel (CAAI), P.O. Box 1101, Golan Street, Air-
    port 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
    https://www.caa.gov.il.  You may view  this material at the FAA,  Air-
    worthiness 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.  This material may be found in
    the AD docket  at https://www.regulations.gov by searching for and lo-
    cating Docket No. FAA-2022-0887.

(2) 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 and fax 206-
    231-3225; email dan.rodina@faa.gov.

Issued on July 15, 2022. Gaetano A. Sciortino, Deputy Director for Strate-
gic Initiatives, Compliance & Airworthiness Division,  Aircraft Certifica-
tion Service.

DATES: The FAA must receive comments  on this proposed AD  by September 6,
2022.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0887; Project Identifier MCAI-2022-00051-T]
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: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Gulfstream Aerospace LP Model Gulfstream G150 airplanes.
This proposed 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 proposed 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 the Civil Aviation
Authority of Israel (CAAI) AD, which is proposed for incorporation by
reference. The FAA is proposing this AD to address the unsafe condition
on these products.

DATES: The FAA must receive comments on this proposed AD by September
6, 2022.

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 https://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 NPRM, contact Gulfstream
Aerospace Corporation, P.O. Box 2206, Mail Station D-25, Savannah, GA
31402-2206; telephone 800-810-4853; fax 912-965-3520; email
pubs@gulfstream.com; internet https://www.gulfstream.com/customer-support.
You may view this service information 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.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating 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 NPRM, any comments
received, and other information. The street address for Docket
Operations is listed above.

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

SUPPLEMENTARY INFORMATION:

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-0887; Project Identifier
MCAI-2022-00051-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
the proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.

Confidential Business Information

CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to Dan
Rodina, Aerospace Engineer, Large Aircraft Section, International
Validation Branch, FAA, 2200 South 216th Street, Des Moines, WA 98198;
telephone and fax 206-231-3225; email dan.rodina@faa.gov. Any
commentary that the FAA receives which is not specifically designated
as CBI will be placed in the public docket for this rulemaking.

Background

The CAAI, which is the aviation authority for Israel, has issued AD
ISR I-57-2021-12-3, dated January 1, 2022 (CAAI AD ISR I-57-2021-12-3)
(also referred to after this as the Mandatory Continuing Airworthiness
Information, or the MCAI), to correct an unsafe condition for certain
Gulfstream Aerospace LP Model Gulfstream G150 airplanes.
This proposed AD was prompted by reports that wing flap fairing
debonding and corrosion were discovered at the lower skin of rib 3 and
rib 11 on both wings. The FAA is proposing 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. See the MCAI for additional background
information.

Related Service Information Under 1 CFR Part 51

CAAI AD ISR I-57-2021-12-3, dated January 1, 2022, describes
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 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.

FAA's Determination

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 the State of Design Authority,
the FAA has been notified of the unsafe condition described in the MCAI
and service information referenced above. The FAA is proposing this AD
because the FAA evaluated all the relevant information and determined
the unsafe condition described previously is likely to exist or develop
on other products of the same type design.

Proposed AD Requirements in This NPRM

This proposed AD requires accomplishing the actions specified in
CAAI AD ISR I-57-2021-12-3 described previously, except for any
differences identified as exceptions in the regulatory text of this
proposed AD.

Costs of Compliance

The FAA estimates that this AD, if adopted as proposed, would
affect 87 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed 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 proposed 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

The FAA 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) Would not affect intrastate aviation in Alaska, and
(3) Would 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

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: