[Federal Register Volume 89, Number 25 (Tuesday, February 6, 2024)]
[Rules and Regulations]
[Pages 8066-8069]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-02460]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0037; Project Identifier MCAI-2024-00027-R; 
Amendment 39-22664; AD 2024-01-52]
RIN 2120-AA64


Airworthiness Directives; H[eacute]licopt[egrave]res Guimbal 
Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2023-24-51 
which applied to all H[eacute]licopt[egrave]res Guimbal Model Cabri G2 
helicopters. AD 2023-24-51 was prompted by reports of a crack in the 
pilot cyclic stick base and required repetitively inspecting certain 
part-numbered pilot and co-pilot cyclic stick bases and, depending on 
the results, corrective action. AD 2023-24-51 also prohibited 
installing those pilot and co-pilot cyclic stick bases unless certain 
requirements were met. Since the FAA issued AD 2023-24-51, more cracks 
in the cyclic stick bases have been reported, including a crack in a 
cyclic stick base that had accumulated only 700 hours time-in-service 
(TIS). This AD requires the same actions as AD 2023-24-51 but reduces 
the compliance time for performing the initial inspection. These 
actions are specified in a European Union Aviation Safety Agency (EASA) 
AD, which is incorporated by reference. The FAA previously sent this AD 
as an emergency AD to all known U.S. owners and operators of these 
helicopters. The FAA is issuing this AD to address the unsafe condition 
on these products.

DATES: This AD is effective February 21, 2024. Emergency AD 2024-01-52, 
issued on January 9, 2024, which contained the requirements of this 
amendment, was effective with actual notice.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of February 21, 
2024.
    The FAA must receive comments on this AD by March 22, 2024.

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 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.
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2024-0037; 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, any comments received, and other 
information. The street address for Docket Operations is listed above.
    Material Incorporated by Reference:
     For EASA material identified in this final rule, contact 
EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 
8999 000; email [email protected]; internet easa.europa.eu. You may 
find the EASA material on the EASA website at ad.easa.europa.eu.
     For Guimbal service information identified in this final 
rule, contact H[eacute]licopt[egrave]res Guimbal, 1070, rue du 
Lieutenant Parayre, A[eacute]rodrome d'Aix-en-Provence, 13290 Les 
Milles, France; phone 33-04-42-39-10-88; email guimbal.com">support@guimbal.com; or 
at guimbal.com.
     You may view this material at the FAA, Office of the 
Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, 
Fort Worth, TX 76177. For information on the availability of this 
material at the FAA, call (817) 222-5110. It is also available at 
regulations.gov under Docket No. FAA-2024-0037.

FOR FURTHER INFORMATION CONTACT: Matthew Bryant, Aviation Safety 
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
phone (303) 342-1092; email [email protected].

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written data, views, or arguments 
about this final rule. Send your comments to an address listed under 
ADDRESSES. Include the Docket No. FAA-2024-0037; Project Identifier 
MCAI-2024-00027-R at the beginning of your comments. The most helpful 
comments reference a specific portion of the final rule, 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 
this final rule because of those comments.

[[Page 8067]]

    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 
regulations.gov, including any personal information you provide. The 
agency will also post a report summarizing each substantive verbal 
contact received about this final rule.

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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Matthew 
Bryant, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; phone (303) 342-1092; email [email protected]. 
Any commentary that the FAA receives which is not specifically 
designated as CBI will be placed in the public docket for this 
rulemaking.

Background

    On November 21, 2023, the FAA issued Emergency AD 2023-24-51 to 
address an unsafe condition on all H[eacute]licopt[egrave]res Guimbal 
Model Cabri G2 helicopters. Emergency AD 2023-24-51 published in the 
Federal Register as a Final rule; request for comments on December 13, 
2023 (Amendment 39-22627, 88 FR 86260) (AD 2023-24-51). AD 2023-24-51 
was issued after EASA, which is the Technical Agent for the Member 
States of the European Union, issued EASA Emergency AD 2023-0204-E, 
dated November 20, 2023 (EASA AD 2023-0204-E) and was prompted by 
reports of a crack in the pilot cyclic stick base. EASA AD 2023-0204-E 
stated that investigation determined that the root cause of the cracks 
was fatigue, primarily related to induced loads on the cyclic stick 
during pre-flight (free play) checks. Accordingly, EASA AD 2023-0204-E 
required repetitively inspecting certain part-numbered pilot and co-
pilot cyclic stick bases and, depending on the results, corrective 
action. EASA AD 2023-0204-E also prohibited installing those pilot and 
co-pilot cyclic stick bases unless its requirements were met.
    AD 2023-24-51 required repetitively inspecting certain part-
numbered pilot and co-pilot cyclic stick bases for a crack and, 
depending on the results, removing the cracked cyclic stick base from 
service and replacing it with a serviceable cyclic stick base in 
accordance with a method approved by the FAA, EASA, or 
H[eacute]licopt[egrave]res Guimbal EASA Design Organization Approval 
(DOA). AD 2023-24-51 also prohibited installing an affected pilot or 
co-pilot cyclic stick base unless it was new (zero total hours TIS) or 
it passed its required inspection. The FAA issued AD 2023-24-51 to 
detect a cracked pilot or co-pilot cyclic stick base. The unsafe 
condition, if not addressed, could result in failure of the pilot or 
co-pilot cyclic stick base and subsequent loss of control of the 
helicopter.

Actions Since AD 2023-24-51 Was Issued

    Since the FAA issued AD 2023-24-51, more cracks in the cyclic stick 
base have been reported, including a crack in a cyclic stick base that 
had accumulated only 700 hours TIS; therefore, EASA issued EASA 
Emergency AD 2024-0007-E, dated January 8, 2024 (EASA AD 2024-0007-E), 
to supersede EASA AD 2023-0204-E. EASA AD 2024-0007-E states that a 
revision of the service bulletin related to the unsafe condition lowers 
the threshold for the initial inspection of the pilot and co-pilot 
cyclic stick bases. Accordingly, EASA AD 2024-0007-E continues to 
require repetitively inspecting certain part-numbered pilot and co-
pilot cyclic stick bases and, depending on the results, corrective 
action, but requires the initial inspection at a lower threshold. EASA 
AD 2024-0007-E also prohibits installing those pilot and co-pilot 
cyclic stick bases unless its requirements are met. You may examine 
EASA AD 2024-0007-E in the AD docket at regulations.gov under Docket 
No. FAA-2024-0037.
    Subsequently, on January 9, 2024, the FAA issued Emergency AD 2024-
01-52 (Emergency AD 2024-01-52) and sent it to all known U.S. owners 
and operators of these helicopters. Emergency AD 2024-01-52 supersedes 
AD 2023-24-51 and continues to require inspecting certain part-numbered 
pilot and co-pilot cyclic stick bases and, depending on the results, 
corrective action, but reduces the threshold for the initial inspection 
from 1,500 hours TIS accumulated on the affected part to 205 hours TIS. 
Emergency AD 2024-01-52 also continues to prohibit installing those 
pilot and co-pilot cyclic stick bases unless certain requirements are 
met.

FAA's Determination

    These products have been approved by the aviation authority of 
another country and are 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 
its emergency AD and service information described below. The FAA is 
issuing this AD after determining that the unsafe condition described 
previously is likely to exist or develop on other products of the same 
type designs.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed EASA AD 2024-0007-E, which requires repetitively 
inspecting pilot cyclic stick base part number (P/N) G41-42-801 and co-
pilot cyclic stick base P/Ns G41-43-801 and G41-43-802 for a crack. 
EASA AD 2024-0007-E reduces the initial inspection from 1,500 FH 
[flight hours] accumulated on the affected part to 205 FH [flight 
hours] and retains the 60-FH [flight hour] repetitive inspections. 
Depending on the inspection results, EASA AD 2024-0007-E requires 
contacting HG [H[eacute]licopt[egrave]res Guimbal] for approved 
instructions to replace a cracked cyclic stick base and accomplishing 
those instructions accordingly. EASA AD 2024-0007-E also allows 
removing the dual control (co-pilot cyclic stick) instead of replacing 
a cracked co-pilot cyclic stick base. Finally, EASA AD 2024-0007-E 
prohibits installing a specified pilot or co-pilot cyclic stick base 
unless it is a new (never installed before) part or, before 
installation, has passed its required inspection.
    The FAA also reviewed Guimbal Mandatory Service Bulletin SB 23-006, 
Revision D, dated January 5, 2024 (SB 23-006D), which specifies 
performing an initial 205-hour TIS inspection (reduced from a prior 
initial inspection of 1,500 hours TIS) followed by repetitive 
inspections of both the pilot and copilot cyclic bases for cracks. SB 
23-006D specifies doing the inspection using a flashlight and in case 
of doubt, performing a dye-penetrant inspection. If there is a crack on 
the pilot's side, SB 23-006D specifies grounding the helicopter and 
contacting HG [H[eacute]licopt[egrave]res Guimbal]; if there is a crack 
on the copilot's side, SB 23-006D specifies removing the dual controls 
and contacting HG.

[[Page 8068]]

    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.

AD Requirements

    This AD requires accomplishing the actions specified in EASA AD 
2024-0007-E, described previously, as incorporated by reference, except 
for any differences identified as exceptions in the regulatory text of 
this AD and except as discussed under ``Differences Between this AD and 
the EASA Emergency AD.''

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD 
process, the FAA developed a process to use some civil aviation 
authority (CAA) ADs as the primary source of information for compliance 
with requirements for corresponding FAA ADs. The FAA has been 
coordinating this process with manufacturers and CAAs. As a result, 
EASA AD 2024-0007-E is incorporated by reference in this FAA final 
rule. This AD, therefore, requires compliance with EASA AD 2024-0007-E 
in its entirety through that incorporation, except for any differences 
identified as exceptions in the regulatory text of this AD. Using 
common terms that are the same as the heading of a particular section 
in EASA AD 2024-0007-E does not mean that operators need comply only 
with that section. For example, where the AD requirement refers to 
``all required actions and compliance times,'' compliance with this AD 
requirement is not limited to the section titled ``Required Action(s) 
and Compliance Time(s)'' in EASA AD 2024-0007-E. Service information 
referenced in EASA AD 2024-0007-E for compliance will be available at 
regulations.gov under Docket No. FAA-2024-0037 after this final rule is 
published.

Differences Between This AD and the EASA Emergency AD

    The service information referenced in EASA AD 2024-0007-E specifies 
performing a dye-penetrant inspection in case of a doubt regarding if 
there is a crack, whereas this AD does not require that action. If 
there is cracked pilot or co-pilot cyclic stick base, EASA AD 2024-
0007-E requires contacting HG [H[eacute]licopt[egrave]res Guimbal] for 
approved instructions to replace it with a serviceable part and 
accomplishing those instructions accordingly and the service 
information referenced in EASA AD 2024-0007-E specifies contacting HG 
[H[eacute]licopt[egrave]res Guimbal] or removing the dual controls and 
contacting HG [H[eacute]licopt[egrave]res Guimbal], whereas this AD 
requires removing the cracked cyclic stick base from service and 
replacing it with a serviceable cyclic stick base in accordance with a 
method approved by the FAA, EASA, or H[eacute]licopt[egrave]res Guimbal 
EASA DOA. Where Table 1 in EASA AD 2024-0007-E states, ``During next 
maintenance check without exceeding 205 FH,'' this AD requires 
replacing that text with, ``Within 205 hours time-in-service.''

Interim Action

    The FAA considers this AD to be an interim action. If final action 
is later identified, the FAA might consider further rulemaking then.

Justification for Immediate Adoption and Determination of the Effective 
Date

    Section 553(b)(3)(B) of the Administrative Procedure Act (APA) (5 
U.S.C. 551 et seq.) authorizes agencies to dispense with notice and 
comment procedures for rules when the agency, for ``good cause,'' finds 
that those procedures are ``impracticable, unnecessary, or contrary to 
the public interest.'' Under this section, an agency, upon finding good 
cause, may issue a final rule without providing notice and seeking 
comment prior to issuance. Further, section 553(d) of the APA 
authorizes agencies to make rules effective in less than thirty days, 
upon a finding of good cause.
    An unsafe condition exists that required the immediate adoption of 
Emergency AD 2024-01-52, issued on January 9, 2024, to all known U.S. 
owners and operators of these helicopters. The FAA found that the risk 
to the flying public justified waiving notice and comment prior to 
adoption of this rule because the affected component is part of an 
assembly that is critical to the control of a helicopter. As the FAA 
also has no information pertaining to the quantity of cracked 
components that may currently exist in the U.S. fleet or how quickly 
the condition may propagate to failure, the actions required by this AD 
must be accomplished before further flight for certain helicopters. 
These conditions still exist, therefore, notice and opportunity for 
prior public comment are impracticable and contrary to the public 
interest pursuant to 5 U.S.C. 553(b)(3)(B).
    In addition, the FAA finds that good cause exists pursuant to 5 
U.S.C. 553(d) for making this amendment effective in less than 30 days, 
for the same reasons the FAA found good cause to forego notice and 
comment.

Regulatory Flexibility Act

    The requirements of the Regulatory Flexibility Act (RFA) do not 
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt 
a rule without prior notice and comment. Because the FAA has determined 
that it has good cause to adopt this rule without prior notice and 
comment, RFA analysis is not required.

Costs of Compliance

    The FAA estimates that this AD affects 50 helicopters of U.S. 
Registry. Labor rates are estimated at $85 per work-hour. Based on 
these numbers, the FAA estimates the following costs to comply with 
this AD.
    Inspecting a pilot or co-pilot cyclic stick base takes a minimal 
amount of time for a nominal cost. If required, replacing a pilot 
cyclic stick base takes about 3 work-hours and parts cost about $1,585 
for an estimated cost of $1,840 per helicopter; and replacing a co-
pilot cyclic stick base takes about 1 work-hour and parts cost about 
$711 for an estimated cost of $796 per helicopter.

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, and

[[Page 8069]]

    (2) Will not affect intrastate aviation in Alaska.

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

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:
0
a. Removing Airworthiness Directive 2023-24-51, Amendment 39-22627 (88 
FR 86260, December 13, 2023); and
0
b. Adding the following new airworthiness directive:

2024-01-52 H[eacute]licopt[egrave]res Guimbal: Amendment 39-22664; 
Docket No. FAA-2024-0037; Project Identifier MCAI-2024-00027-R.

(a) Effective Date

    The FAA issued Emergency Airworthiness Directive (AD) 2024-01-52 
on January 9, 2024, directly to affected owners and operators. As a 
result of such actual notice, that emergency AD was effective for 
those owners and operators on the date it was provided. This AD 
contains the same requirements as that emergency AD and, for those 
who did not receive actual notice, is effective on February 21, 
2024.

(b) Affected ADs

    This AD replaces AD 2023-24-51, Amendment 39-22627 (88 FR 86260, 
December 13, 2023).

(c) Applicability

    This AD applies to H[eacute]licopt[egrave]res Guimbal Model 
Cabri G2 helicopters, certificated in any category.

(d) Subject

    Joint Aircraft System Component (JASC) Code: 6710, Main Rotor 
Control.

(e) Unsafe Condition

    This AD was prompted by reports of a crack in the pilot cyclic 
stick base. The FAA is issuing this AD to detect a cracked pilot or 
co-pilot cyclic stick base. The unsafe condition, if not addressed, 
could result in failure of the pilot or co-pilot cyclic stick base 
and subsequent loss of control of the helicopter.

(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, European Union Aviation Safety Agency (EASA) 
Emergency AD 2024-0007-E, dated January 8, 2024 (EASA AD 2024-0007-
E).

(h) Exceptions to EASA AD 2024-0007-E

    (1) Where EASA AD 2024-0007-E defines ``the SB,'' this AD 
requires using Guimbal Mandatory Service Bulletin SB 23-006, 
Revision D, dated January 5, 2024.
    (2) Where EASA AD 2024-0007-E refers to its effective date, this 
AD requires using the effective date of this AD.
    (3) Where EASA AD 2024-0007-E requires compliance in terms of 
flight hours, this AD requires using hours time-in-service.
    (4) Where Table 1 in EASA AD 2024-0007-E states, ``During next 
maintenance check without exceeding 205 FH,'' for this AD, replace 
that text with, ``Within 205 hours time-in-service.''
    (5) Where Note (1) of EASA AD 2024-0007-E states, ``For the 
initial inspection, a single ferry flight without passengers is 
allowed to a maintenance location, where the actions required by 
this AD can be accomplished,'' for this AD, replace that text with, 
``For the initial inspection, a single special flight permit may be 
issued in accordance with 14 CFR 21.197 and 21.199 to a maintenance 
location where the actions required by this AD can be accomplished, 
provided there are no passengers onboard.''
    (6) Where the service information referenced in EASA AD 2024-
0007-E states performing a dye-penetrant inspection, this AD does 
not require that action.
    (7) Instead of complying with paragraphs (2) and (3) of EASA AD 
2024-0007-E and paragraph (d) of the service information referenced 
in EASA AD 2024-0007-E, for this AD, comply with the following: ``As 
a result of an inspection required by paragraph (1) of EASA AD 2024-
0007-E, if there is a crack, before further flight, remove the 
affected part, as defined in EASA AD 2024-0007-E, from service and 
replace it with a serviceable part, as defined in EASA AD 2024-0007-
E, in accordance with a method approved by the Manager, 
International Validation Branch, FAA; or EASA; or 
H[eacute]licopt[egrave]res Guimbal EASA Design Organization Approval 
(DOA). If approved by the DOA, the approval must include the DOA-
authorized signature.''
    (8) This AD does not adopt the ``Remarks'' section of EASA AD 
2024-0007-E.

(i) Alternative Methods of Compliance (AMOCs)

    (1) 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 local Flight 
Standards District Office, as appropriate. If sending information 
directly to the manager of the International Validation Branch, send 
it to the attention of the person identified in paragraph (j) of 
this AD or email it to: [email protected]. If mailing 
information, also submit information by email.
    (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.

(j) Additional Information

    For more information about this AD, contact Matthew Bryant, 
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; email [email protected].

(k) 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) European Union Aviation Safety Agency (EASA) Emergency AD 
2024-0007-E, dated January 8, 2024.
    (ii) Guimbal Mandatory Service Bulletin SB 23-006, Revision D, 
dated January 5, 2024.
    (3) For EASA Emergency AD 2024-0007-E, contact EASA, Konrad-
Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; 
email [email protected]; internet easa.europa.eu. You may find the 
EASA material on the EASA website at ad.easa.europa.eu.
    (4) For Guimbal service information identified in this AD, 
contact H[eacute]licopt[egrave]res Guimbal, 1070, rue du Lieutenant 
Parayre, A[eacute]rodrome d'Aix-en-Provence, 13290 Les Milles, 
France; phone 33-04-42-39-10-88; email guimbal.com">support@guimbal.com; or at 
guimbal.com.
    (5) You may view this service information at the FAA, Office of 
the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 
6N-321, Fort Worth, TX 76177. For information on the availability of 
this material at the FAA, call (817) 222-5110.
    (6) You may view this material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].

    Issued on February 1, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2024-02460 Filed 2-2-24; 4:15 pm]
BILLING CODE 4910-13-P