Document ID: FAA-2021-0459-0001
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: Gulfstream Aerospace LP Airplanes
Posted Date: 2021-06-10T04:00Z

[Federal Register Volume 86, Number 110 (Thursday, June 10, 2021)]
[Proposed Rules]
[Pages 30819-30822]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-12170]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0459; Project Identifier MCAI-2021-00129-T]
RIN 2120-AA64

Airworthiness Directives; Gulfstream Aerospace LP Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for

[[Page 30820]]

certain Gulfstream Aerospace LP Model Gulfstream G280 airplanes. This 
proposed AD was prompted by a report that during full-scale fatigue 
testing, a crack was found in the area of the attachment of the wing 
rib 0 to the front spar. This proposed AD would require non-destructive 
testing on the forward (front) spar vertical stiffener and rib 0 for 
any cracking, installation of a doubler to the forward (front) spar and 
rib 0 attachment, and repair if necessary, as specified in a 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 July 26, 
2021.

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 material that will be incorporated by reference (IBR) in this 
AD, contact The 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 IBR 
material on the CAAI website at https://www.caa.gov.il. You may view 
this IBR 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 https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0459.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0459; 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: Tom Rodriguez, Aerospace Engineer, 
Large Aircraft Section, International Validation Branch, FAA, 2200 
South 216th St., Des Moines, WA 98198; telephone and fax 206-231-3226; 
email Tom.Rodriguez@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-2021-0459; Project Identifier 
MCAI-2021-00129-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 proposed AD.

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 Tom 
Rodriguez, Aerospace Engineer, Large Aircraft Section, International 
Validation Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; 
telephone and fax 206-231-3226; email Tom.Rodriguez@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 
CAAI AD I-57-2020-06-01, dated January 27, 2021 (CAAI AD I-57-2020-06-
01) (also referred to as the Mandatory Continuing Airworthiness 
Information, or the MCAI), to correct an unsafe condition for certain 
Gulfstream Aerospace LP Model Gulfstream G280 airplanes.
    This proposed AD was prompted by a report that during full-scale 
fatigue testing, a crack was found in the area of the attachment of the 
wing rib 0 to the front spar. The FAA is proposing this AD to address 
any cracking at the area of the wing rib 0 to the front spar, which 
could affect the structural integrity of the wing. See the MCAI for 
additional background information.

Related Service Information Under 1 CFR Part 51

    CAAI AD I-57-2020-06-01 specifies procedures for non-destructive 
testing (high frequency, mid frequency, bolt hole eddy current 
inspections, and a liquid (dye) penetrant inspection) for cracking on 
the forward (front) spar vertical stiffener and rib 0, installation of 
a doubler to the forward (front) spar and rib 0 attachment, and repair 
if necessary. 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.

FAA's Determination and Requirements of This Proposed AD

    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 
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 in other 
products of the same type design.

Proposed AD Requirements

    This proposed AD would require accomplishing the actions specified 
in CAAI AD I-57-2020-06-01 described previously, as incorporated by 
reference, except for any differences identified as exceptions in the 
regulatory text of this AD.

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD

[[Page 30821]]

process, the FAA initially worked with Airbus and EASA to develop a 
process to use certain EASA ADs as the primary source of information 
for compliance with requirements for corresponding FAA ADs. The FAA has 
since coordinated with other manufacturers and civil aviation 
authorities (CAAs) to use this process. As a result, CAAI AD I-57-2020-
06-01 will be incorporated by reference in the FAA final rule. This 
proposed AD would, therefore, require compliance with CAAI AD I-57-
2020-06-01 in its entirety, through that incorporation, except for any 
differences identified as exceptions in the regulatory text of this 
proposed AD. Service information specified in CAAI AD I-57-2020-06-01 
that is required for compliance with CAAI AD I-57-2020-06-01 will be 
available on the internet at https://www.regulations.gov by searching 
for and locating Docket No. FAA-2021-0459 after the FAA final rule is 
published.

Costs of Compliance

    The FAA estimates that this proposed AD affects 23 airplanes of 
U.S. registry. The FAA estimates the following costs to comply with 
this proposed AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
80 work-hours x $85 per hour = $6,800 *......................            $400         * $7,200       * $165,600
----------------------------------------------------------------------------------------------------------------
* If the actions are accomplished during 4C Check.

    The FAA has received no definitive data on which to base the cost 
estimates for the repair specified in this proposed AD.
    According to the manufacturer, some or all of the costs of this 
proposed AD may be covered under warranty, thereby reducing the cost 
impact on affected oeprators. The FAA does not control warranty 
coverage for affected operators. As a result, the FAA has included all 
known costs in the 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.
    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

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:

Gulfstream Aerospace LP: Docket No. FAA-2021-0459; Project 
Identifier MCAI-2021-00129-T.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by July 26, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Gulfstream Aerospace LP Model Gulfstream G280 
airplanes, certificated in any category, as identified in The Civil 
Aviation Authority of Israel (CAAI) AD I-57-2020-06-01, dated 
January 27, 2021 (CAAI AD I-57-2020-06-01).

(d) Subject

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

(e) Reason

    This AD was prompted by a report that during full-scale fatigue 
testing, a crack was found in the area of the attachment of the wing 
rib 0 to the front spar. The FAA is issuing this AD to address any 
cracking at the area of the wing rib 0 to the front spar, which 
could affect the structural integrity of the wing.

(f) Compliance

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

(g) Requirements

    Except as specified in paragraph (h) of this AD: Comply with all 
required actions and compliance times specified in, and in 
accordance with, CAAI AD I-57-2020-06-01.

(h) Exceptions to CAAI AD I-57-2020-06-01

    Where CAAI AD I-57-2020-06-01 requires compliance ``not later 
than 5,000 flight cycles,'' this AD requires compliance before the 
accumulation of 5,000 total flight cycles since the date of issuance 
of the original Israeli airworthiness certificate or the date of 
issuance of the original Israeli export certificate of 
airworthiness.

(i) No Reporting Requirement

    Although the service information referenced in CAAI AD I-57-
2020-06-01 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,

[[Page 30822]]

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 CAAI; or 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 I-57-2020-06-01, contact The 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 CAAI AD on the CAAI website 
at https://www.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. This material may be 
found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-
2021-0459.
    (2) For more information about this AD, contact Tom Rodriguez, 
Aerospace Engineer, Large Aircraft Section, International Validation 
Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 
and fax 206-231-3226; email Tom.Rodriguez@faa.gov.

    Issued on June 6, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-12170 Filed 6-9-21; 8:45 am]
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