2024-09549. Airworthiness Directives; Airbus Helicopters

AGENCY:

Federal Aviation Administration (FAA), DOT.

ACTION:

Notice of proposed rulemaking (NPRM).

SUMMARY:

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model SA330J helicopters. This proposed AD was prompted by a report of a main rotor gearbox (MGB) flange assembly coupling (coupling) that was incorrectly assembled. This proposed AD would require a one-time visual inspection to determine correct assembly of each sliding flange installed on each MGB coupling, and if necessary, further corrective actions. This proposed AD would also prohibit installing certain MGB couplings or any MGB equipped with certain MGB couplings on any helicopter. These actions are specified in a European Union Aviation Safety Agency (EASA) 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 NPRM by July 1, 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: [phone].
• 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-2024-1291; 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, the EASA AD, any comments received, and other information. The street address for Docket Operations is listed above.

Material Incorporated by Reference:

• For EASA material, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone [phone]; [e-mail]; internet easa.europa.eu. You may find the EASA material on the EASA website at ad.easa.europa.eu.
• 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 [phone]. The EASA material is also available atregulations.gov under Docket No. FAA-2024-1291.

Other Related Service Information: For Airbus Helicopters service information identified in this NPRM, contact Airbus Helicopters, 2701 North Forum Drive, Grand Prairie, TX 75052; phone [phone] or [phone]; fax [phone]; or at airbus.com/en/products-services/helicopters/hcare-services/airbusworld.

FOR FURTHER INFORMATION CONTACT:

Hal Jensen, Aviation Safety Engineer, FAA; 3960 Paramount Boulevard, Lakewood, CA 90712; telephone [phone]; email [e-mail].

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-2024-1291; Project Identifier MCAI-2022-00901-R” 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 this 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 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 Hal Jensen, Aviation Safety Engineer, FAA; 3960 Paramount Boulevard, Lakewood, CA 90712; telephone [phone]; email [e-mail]. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.

Background

EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2022-0140, dated July 7, 2022 (EASA AD 2022-0140), to correct an unsafe condition on Airbus Helicopters Model SA 330 J helicopters, all serial numbers.

This proposed AD was prompted by a report of an incorrectly assembled MGB coupling part number (P/N) 330A32-9392-01 which was installed in the reverse position, deviating from the assembly instructions. The FAA is proposing this AD to detect and address incorrectly assembled MGB couplings, which if not addressed, could lead to loss of the drive transmission from the left-hand or right-hand engine, and subsequent loss of control of the helicopter.

You may examine the EASA AD in the AD docket at regulations.gov under Docket No. FAA-2024-1291.

Related Service Information Under 1 CFR Part 51

EASA AD 2022-0140 requires a one-time inspection of the left-hand and right-hand MGB coupling P/N 330A32-9392-01 for correct assembly. If any MGB coupling is incorrectly assembled, EASA AD 2022-0140 requires replacing an affected MGB coupling with a serviceable MGB coupling. EASA AD 2022-0140 also prohibits installing an affected MGB coupling or an MGB equipped with an affected coupling installed, on any helicopter unless it has passed inspection requirements.

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 ADDRESSES .

Other Related Service Information

The FAA also reviewed Airbus Helicopters Alert Service Bulletin No. SA330-65.140, Revision 0, dated June 30, 2022, which specifies procedures for inspecting the assembly of the MGB coupling by ensuring the sliding flange is correctly assembled and there is no presence of embossments. This service information also specifies procedures for replacing an affected MGB coupling with a correctly assembled MGB coupling and instructions to send affected parts to Airbus Helicopters.

FAA's Determination

These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAA's bilateral agreement with the European Union, EASA has notified the FAA of the unsafe condition described in its AD. The FAA is proposing this AD after determining that the unsafe condition described previously is likely to exist or develop on other helicopters of the same type design.

Proposed AD Requirements in This NPRM

This proposed AD would require accomplishing the actions specified in EASA AD 2022-0140, described previously, as incorporated by reference, except for any differences identified under “Differences Between this Proposed AD and the EASA 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, the FAA proposes to incorporate EASA AD 2022-0140 by reference in the FAA final rule. This proposed AD would, therefore, require compliance with EASA AD 2022-0140 in its entirety through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD. Using common terms that are the same as the heading of a particular section in EASA AD 2022-0140 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 2022-0140. Service information referenced in EASA AD 2022-0140 for compliance will be available at regulations.gov under Docket No. FAA-2024-1291 after the FAA final rule is published.

Differences Between This Proposed AD and the EASA AD

If any incorrectly assembled MGB coupling is found during the inspection, EASA AD 2022-0140 requires replacing each affected part with a serviceable part, whereas this proposed AD would require removing each affected part from service and replacing it with a serviceable part, as defined in EASA AD 2022-0140.

Service information referenced in EASA AD 2022-0140 specifies reporting certain information and sending affected parts to Airbus Helicopters, whereas this proposed AD would not require sending information or parts to Airbus Helicopters.

Costs of Compliance

The FAA estimates that this AD, if adopted as proposed, would affect 7 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 proposed AD.

Visually inspecting each MGB coupling would take approximately 4 work-hours for an estimated cost of $340 per helicopter and up to $2,380 for the U.S. fleet.

If required, removing and replacing the MGB coupling would take approximately 8 work-hours and parts would cost approximately $23,215 for an estimated cost of $23,895 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

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.

§ 39.13

[Amended]

2. The FAA amends § 39.13 by adding the following new airworthiness directive:

Airbus Helicopters: Docket No. FAA-2024-1291; Project Identifier MCAI-2022-00901-R.

(a) Comments Due Date

The FAA must receive comments on this airworthiness directive (AD) by July 1, 2024.

(b) Affected ADs

None.

(c) Applicability

This AD applies to all Airbus Helicopters Model SA330J helicopters, certificated in any category.

(d) Subject

Joint Aircraft System Component (JASC) Code: 6320, Main rotor gearbox.

(e) Unsafe Condition

This AD was prompted by a report of an incorrectly assembled main rotor gearbox (MGB) flange assembly coupling (coupling). The FAA is issuing this AD to detect and address incorrectly assembled MGB couplings. The unsafe condition, if not addressed, could result in loss of the drive transmission from the left-hand or right-hand engine, 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 paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2022-0140, dated July 7, 2022 (EASA AD 2022-0140).

(h) Exceptions to EASA AD 2022-0140

(1) Where EASA AD 2022-0140 requires compliance in terms of flight hours, this AD, requires using hours time-in-service.

(2) Where EASA AD 2022-0140 refers to its effective date, this AD requires using the effective date of this AD.

(3) Where paragraph (1) of EASA AD 2022-0140 states, “in accordance with the instructions of the ASB,” for this AD, replace that text with “in accordance with the Accomplishment Instructions, paragraph 3.B.2.b. of the ASB, except you are not required to comply with paragraph 3.B.2.c.”

(4) Where paragraph (2) of EASA AD 2022-0140 states to “replace the affected part with a serviceable part, in accordance with the instructions of the ASB” for this AD, replace that text with “remove the affected part, as defined in EASA AD 2022-0140, from service and replace it with a serviceable part, as defined in EASA AD 2022-0140, in accordance with the Accomplishment Instructions, paragraph 3.B.2.d. of the ASB, except you are not required to send an affected part to Airbus Helicopters or comply with paragraphs 2.D or 3.B.3 of the ASB.”

(5) Where the service information referenced in EASA AD 2022-0140 specifies “install a flange assy coupling (1) correctly assembled,” for this AD, replace that text with “install a correctly assembled MGB coupling.”

(6) This AD does not adopt the “Remarks” section of EASA AD 2022-0140.

(i) No Reporting or Return of Parts

Although the service information referenced in EASA AD 2022-0140 specifies to submit certain information and return parts to the manufacturer, this AD does not require those actions.

(j) Special Flight Permits

Special flight permits may be issued in accordance with 14 CFR 21.197 and 21.199 in order to fly to a maintenance area to perform the required actions in this AD, provided there are no passengers onboard.

(k) Alternative Methods of Compliance (AMOCs)

(1) The Manager, West Certification 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 identified in paragraph (l) of this AD. Information may be emailed to [e-mail].

(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.

(l) Related Information

For more information about this AD, contact Hal Jensen, Aviation Safety Engineer, FAA; 3960 Paramount Boulevard, Lakewood, CA 90712; telephone [phone]; email [e-mail].

(m) 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 the AD specifies otherwise.

(i) European Union Aviation Safety Agency (EASA) AD 2022-0140, dated July 7, 2022.

(ii) [Reserved]

(3) For EASA AD 2022-00140, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone [phone]; email [e-mail]; internet easa.europa.eu. You may find the EASA material on the EASA website at ad.easa.europa.eu.

(4) 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 [phone].

(5) 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 [e-mail].

Issued on April 26, 2024.

James D. Foltz,

Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service.