Airworthiness Directives; Leonardo S.p.a. Helicopters, 46959-46961 [2021-17951]

Download as PDF jbell on DSKJLSW7X2PROD with RULES Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Rules and Regulations flight (i.e., latent failures). The applicant may address this condition through safety assessments and incorporation of prevention strategies into its design. The ‘‘operation’’ addressed by Condition 2 includes all operation of the system, whether intentional, inadvertent, or automatic. Markings, instructions, and other information. Conditions 3, 4, and 5 are intended to protect certain categories of persons based upon their expected interaction with the system. These conditions require the design to supply certain safety information to these persons. Condition 3 requires the design to provide pertinent laser-safety information to maintenance and service personnel at the location of the installation. At a minimum, such ‘‘pertinent’’ information will include information about potential hazards to persons who are using optical magnification devices, such as magnifying glasses or binoculars. The warning information should be consistent with the laser’s classification in 21 CFR 1040. Condition 4 requires the airplane instructions for continued airworthiness to contain the appropriate warnings related to the laser’s classification. Like the warning information to be provided at the location of the laser system’s installation, the purpose of this condition is to ensure any person maintaining the system is aware of the hazards, including those related to the use of magnifying glasses or binoculars. Condition 5 requires the applicant to update the airplane operating limitations and information required under 14 CFR 25.1581. The airplane flight-manual supplement insert must describe the intended function of the LAIRCM system, its intended operation, and the phases of flight in which it may be used. The insert also must add a caution that describes the significant risk of injury the LAIRCM system poses to others while in proximity to other aircraft, airports, and populated areas. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. These special conditions, and the corresponding supplemental type certificate for the installation of this system, do not constitute approval to operate the system. FAA Advisory Circular 70–1, ‘‘Outdoor Laser Operations,’’ provides guidance on obtaining operational approval. VerDate Sep<11>2014 16:11 Aug 20, 2021 Jkt 253001 Discussion of Comments The FAA issued Notice of Proposed Special Conditions No. 25–21–02–SC for the Bombardier Model CL–600–2B16 airplane, as modified by Pro Star Aviation, which was published in the Federal Register on June 24, 2021 (86 FR 33147). The FAA received one comment supporting the proposed special conditions as they apply to the installation of a LAIRCM system ‘‘. . . on the specific model of aircraft.’’ Applicability As discussed above, these special conditions are applicable to the Bombardier Model CL–600–2B16 airplane with the Pro Star Aviation LAIRCM system installed. Should Pro Star Aviation apply at a later date for a supplemental type certificate to modify any other model included on Type Certificate No. A21EA to incorporate the same novel or unusual design feature, these special conditions would apply to that model as well. Conclusion This action affects only a certain novel or unusual design feature on one model of airplane. It is not a rule of general applicability and affects only the applicant. List of Subjects in 14 CFR Part 25 Aircraft, Aviation safety, Reporting and recordkeeping requirements. Authority Citation The authority citation for these special conditions is as follows: damage, or through distraction or incapacitation of crew. 3. Laser-safety information for maintaining or servicing the airplane must be prominently placarded on the airplane or LAIRCM system at the location of the laser installation. 4. Instructions for continued airworthiness for installation, removal, and maintenance of the LAIRCM system must contain warnings appropriate to the laser classification concerning the hazards associated with exposure to laser radiation. This includes instructions regarding potential hazards to personnel who are using optical magnification devices such as magnifying glasses or binoculars. 5. The airplane flight manual supplement (AFMS) must describe the intended functions of the installed laser systems, to include identifying the intended operations and phases of flight. The AFMS must state: CAUTION: The operation of the installed laser system could pose significant risk of injury to others while in proximity to other aircraft, airports, and populated areas. Issued in Washington, DC, on August 17, 2021. Erik Brown, Acting Manager, Systems Policy Branch, Policy and Innovation Division, Aircraft Certification Service. [FR Doc. 2021–17979 Filed 8–20–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702, 44704. Federal Aviation Administration The Special Conditions Accordingly, pursuant to the authority delegated to me by the Administrator, the following special conditions are issued as part of the type certification basis for the Bombardier Model CL–600–2B16 airplane with the LAIRCM system, as modified by Pro Star Aviation. 1. The system must have means that prevent the inadvertent activation of the system on the ground, including during airplane maintenance and ground handling. Such means must address all foreseeable failure modes and operating and maintenance errors. 2. The system must be designed so that its operation in-flight does not result in damage to the airplane or other aircraft, or injury to any person. Operation of the system must not be capable of compromising continued safe flight and landing of other aircraft and the airplane on which it is installed, either by direct damage, laser-reflective 14 CFR Part 39 PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 46959 [Docket No. FAA–2021–0373; Project Identifier MCAI–2020–01352–R; Amendment 39–21668; AD 2021–16–06] RIN 2120–AA64 Airworthiness Directives; Leonardo S.p.a. Helicopters Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is superseding Airworthiness Directive (AD) 2020–19– 11 for certain Leonardo S.p.a. Model A119 and AW119 MKII helicopters. AD 2020–19–11 required repetitive borescope inspections of the 90-degree tail rotor gearbox (TGB) and depending on the inspection results, removing the TGB from service. This AD was prompted by the determination that additional parts may be susceptible to the unsafe condition. This AD retains SUMMARY: E:\FR\FM\23AUR1.SGM 23AUR1 46960 Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Rules and Regulations the inspection requirements of AD 2020–19–11, and revises the compliance time and applicability. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective September 27, 2021. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 27, 2021. ADDRESSES: For service information identified in this final rule, contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39– 0331–225074; fax +39–0331–229046; or at https:// customerportal.leonardocompany.com/ en-US/. 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. It is also available at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0373. jbell on DSKJLSW7X2PROD with RULES Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0373; 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 European Union Aviation Safety Agency (EASA) AD, 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. FOR FURTHER INFORMATION CONTACT: Rao Edupuganti, Aerospace Engineer, Dynamic Systems Section, Technical Innovation Policy Branch, Policy & Innovation Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222–5110; email rao.edupuganti@faa.gov. SUPPLEMENTARY INFORMATION: Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2020–19–11, Amendment 39–21254 (85 FR 59404, September 22, 2020) (AD 2020–19–11). AD 2020–19–11 applied to Leonardo S.p.a. Model A119 and AW119 MKII helicopters with TGB part number (P/N) 109–0440–06–101 or P/N 109–0440–06– VerDate Sep<11>2014 16:11 Aug 20, 2021 Jkt 253001 105 having serial number (S/N) 167, 169 through 172 inclusive, 215 through 225 inclusive, 227, 230, 232, 233, AW268, K3, K16, M47, or L29, installed. The NPRM published in the Federal Register on May 21, 2021 (86 FR 27538). In the NPRM, the FAA proposed to retain certain requirements of AD 2020– 19–11, revise the compliance time for the repetitive inspections from intervals not to exceed 100 hours time-in-service (TIS) or 6 months to only intervals not to exceed 6 months, and revise the applicability paragraph by adding certain serial-numbered TGB shafts. The NPRM was prompted by EASA AD 2020–0206, dated September 30, 2020 (EASA AD 2020–0206), issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Leonardo S.p.A. Helicopters, formerly Finmeccanica S.p.A., AgustaWestland S.p.A., Agusta S.p.A.; and AgustaWestland Philadelphia Corporation, formerly Agusta Aerospace Corporation. EASA advises that additional parts may be susceptible to similar occurrences and some TGB shafts could have been reinstalled on a TGB other than the one on which they were initially installed. This condition, if not addressed, could result in failure of the tail rotor, possibly resulting in reduced control of the helicopter. Accordingly, EASA AD 2020–0206 retains the inspection requirements of EASA AD 2018–0156, dated July 24, 2018, which prompted AD 2020–19–11, for certain part-numbered TGB shafts and revises the definition of an affected part by adding certain serial-numbered TGB shafts. Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs. Conclusion 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 about the unsafe condition described in its AD. 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 these helicopters. Related Service Information Under 1 CFR Part 51 The FAA reviewed Leonardo Helicopters Alert Service Bulletin No. PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 119–090, Revision A, dated September 14, 2020. This service information specifies procedures for conducting an endoscope inspection of the internal surface of the TGB output shaft for corrosion. This service information also specifies replacing the TGB if corrosion is found. 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. Interim Action The FAA considers this AD to be an interim action. Differences Between This AD and the EASA AD EASA AD 2020–0206 uses flight hours to describe one compliance time, whereas this AD uses hours TIS. EASA AD 2020–0206 requires using an endoscope for inspection, whereas this AD requires inspecting with a borescope. EASA AD 2020–0206 defines the affected part as the 90-degree TGB shaft installed on TGB P/N 109–0440– 06–01–101, whereas the applicability paragraph of this AD includes TGB P/ N 109–0440–06–101 instead. Costs of Compliance The FAA estimates that this AD affects 134 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. Borescope inspecting the TGB output shaft takes about 3 work-hours for an estimated cost of $255 per helicopter and $34,170 for the U.S. fleet per inspection cycle. Replacing a TGB takes about 18 workhours and parts cost about $49,000 (overhauled TGB) for an estimated cost of $50,530 per helicopter. The FAA has included all known costs in its cost estimate. According to the manufacturer, however, some of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected operators. 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 E:\FR\FM\23AUR1.SGM 23AUR1 Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Rules and Regulations 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. § 39.13 [Amended] 2. The FAA amends § 39.13 by: a. Removing Airworthiness Directive 2020–19–11, Amendment 39–21254 (85 FR 59404, September 22, 2020); and ■ b. Adding the following new airworthiness directive: ■ ■ jbell on DSKJLSW7X2PROD with RULES 2021–16–06 Leonardo S.p.a.: Amendment 39–21668; Docket No. FAA–2021–0373; Project Identifier MCAI–2020–01352–R. (a) Effective Date This airworthiness directive (AD) is effective September 27, 2021. (b) Affected ADs This AD replaces AD 2020–19–11, Amendment 39–21254 (85 FR 59404, September 22, 2020). VerDate Sep<11>2014 16:11 Aug 20, 2021 Jkt 253001 (c) Applicability This AD applies to Leonardo S.p.a. Model A119 and AW119 MKII helicopters, certificated in any category, with 90-degree tail rotor gearbox (TGB) part number (P/N) 109–0440–06–101 or 109–0440–06–105, and with TGB shaft P/N 109–0443–03–107 having a serial number (S/N) listed in Table 1 of Leonardo Helicopters Alert Service Bulletin No. 119–090, Revision A, dated September 14, 2020 (ASB 119–090), installed. Note 1 to paragraph (c): A TGB shaft is also referred to as a mast gear assembly. (d) Subject Joint Aircraft Service Component (JASC) Code: 6510, Tail Rotor Drive Shaft. (e) Unsafe Condition This AD was prompted by two occurrences of corrosion on the internal surface of the TGB shaft. The FAA is issuing this AD to detect corrosion of the TGB shaft. The unsafe condition, if not addressed, could result in failure of the tail rotor, possibly resulting in reduced control of the helicopter. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) Within 25 hours time-in-service (TIS) or 3 months, whichever occurs first after the effective date of this AD, and thereafter at intervals not to exceed 6 months, borescope inspect the entire internal surface of the TGB shaft for corrosion. Refer to Detail A of Figure 1 of ASB 119–090, for a depiction of the entry point for the borescope. If there is corrosion, before further flight, remove the TGB from service. (2) As of the effective date of this AD, do not install on any helicopter any TGB P/N 109–0440–06–101 or 109–0440–06–105 that has TGB shaft P/N 109–0443–03–107 having an S/N listed in Table 1 of ASB 119–090, unless the actions required by paragraph (g)(1) of this AD have been accomplished. (h) Special Flight Permits A special flight permit may be permitted provided that there are no passengers onboard. (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)(1) of this AD. Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. (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. PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 46961 (j) Related Information (1) For more information about this AD, contact Rao Edupuganti, Aerospace Engineer, Dynamic Systems Section, Technical Innovation Policy Branch, Policy & Innovation Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222–5110; email rao.edupuganti@ faa.gov. (2) The subject of this AD is addressed in European Union Aviation Safety Agency (EASA) AD 2020–0206, dated September 30, 2020. You may view the EASA AD at https:// www.regulations.gov in Docket No. FAA– 2021–0373. (k) 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) Leonardo Helicopters Alert Service Bulletin No. 119–090, Revision A, dated September 14, 2020. (ii) [Reserved] (3) For service information identified in this AD, contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone +39–0331– 225074; fax +39–0331–229046; or at https:// customerportal.leonardocompany.com/enUS/. (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 (817) 222–5110. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ ibr-locations.html. Issued on August 16, 2021. Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–17951 Filed 8–20–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 71 [Docket No. FAA–2021–0648; Amendment No. 71–53] RIN 2120–AA66 Airspace Designations; Incorporation by Reference Federal Aviation Administration (FAA), DOT. AGENCY: E:\FR\FM\23AUR1.SGM 23AUR1

Agencies

[Federal Register Volume 86, Number 160 (Monday, August 23, 2021)]
[Rules and Regulations]
[Pages 46959-46961]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-17951]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0373; Project Identifier MCAI-2020-01352-R; 
Amendment 39-21668; AD 2021-16-06]
RIN 2120-AA64


Airworthiness Directives; Leonardo S.p.a. Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-19-11 
for certain Leonardo S.p.a. Model A119 and AW119 MKII helicopters. AD 
2020-19-11 required repetitive borescope inspections of the 90-degree 
tail rotor gearbox (TGB) and depending on the inspection results, 
removing the TGB from service. This AD was prompted by the 
determination that additional parts may be susceptible to the unsafe 
condition. This AD retains

[[Page 46960]]

the inspection requirements of AD 2020-19-11, and revises the 
compliance time and applicability. The FAA is issuing this AD to 
address the unsafe condition on these products.

DATES: This AD is effective September 27, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of September 
27, 2021.

ADDRESSES: For service information identified in this final rule, 
contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of 
Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) 
Italy; telephone +39-0331-225074; fax +39-0331-229046; or at https://customerportal.leonardocompany.com/en-US/. 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. It is also available at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0373.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0373; 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 
European Union Aviation Safety Agency (EASA) AD, 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.

FOR FURTHER INFORMATION CONTACT: Rao Edupuganti, Aerospace Engineer, 
Dynamic Systems Section, Technical Innovation Policy Branch, Policy & 
Innovation Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; 
telephone (817) 222-5110; email [email protected].

SUPPLEMENTARY INFORMATION:

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2020-19-11, Amendment 39-21254 (85 FR 
59404, September 22, 2020) (AD 2020-19-11). AD 2020-19-11 applied to 
Leonardo S.p.a. Model A119 and AW119 MKII helicopters with TGB part 
number (P/N) 109-0440-06-101 or P/N 109-0440-06-105 having serial 
number (S/N) 167, 169 through 172 inclusive, 215 through 225 inclusive, 
227, 230, 232, 233, AW268, K3, K16, M47, or L29, installed. The NPRM 
published in the Federal Register on May 21, 2021 (86 FR 27538). In the 
NPRM, the FAA proposed to retain certain requirements of AD 2020-19-11, 
revise the compliance time for the repetitive inspections from 
intervals not to exceed 100 hours time-in-service (TIS) or 6 months to 
only intervals not to exceed 6 months, and revise the applicability 
paragraph by adding certain serial-numbered TGB shafts. The NPRM was 
prompted by EASA AD 2020-0206, dated September 30, 2020 (EASA AD 2020-
0206), issued by EASA, which is the Technical Agent for the Member 
States of the European Union, to correct an unsafe condition for 
Leonardo S.p.A. Helicopters, formerly Finmeccanica S.p.A., 
AgustaWestland S.p.A., Agusta S.p.A.; and AgustaWestland Philadelphia 
Corporation, formerly Agusta Aerospace Corporation. EASA advises that 
additional parts may be susceptible to similar occurrences and some TGB 
shafts could have been reinstalled on a TGB other than the one on which 
they were initially installed. This condition, if not addressed, could 
result in failure of the tail rotor, possibly resulting in reduced 
control of the helicopter.
    Accordingly, EASA AD 2020-0206 retains the inspection requirements 
of EASA AD 2018-0156, dated July 24, 2018, which prompted AD 2020-19-
11, for certain part-numbered TGB shafts and revises the definition of 
an affected part by adding certain serial-numbered TGB shafts.

Discussion of Final Airworthiness Directive

Comments

    The FAA received no comments on the NPRM or on the determination of 
the costs.

Conclusion

    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 about the 
unsafe condition described in its AD. 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 these helicopters.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Leonardo Helicopters Alert Service Bulletin No. 
119-090, Revision A, dated September 14, 2020. This service information 
specifies procedures for conducting an endoscope inspection of the 
internal surface of the TGB output shaft for corrosion. This service 
information also specifies replacing the TGB if corrosion is found.
    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.

Interim Action

    The FAA considers this AD to be an interim action.

Differences Between This AD and the EASA AD

    EASA AD 2020-0206 uses flight hours to describe one compliance 
time, whereas this AD uses hours TIS. EASA AD 2020-0206 requires using 
an endoscope for inspection, whereas this AD requires inspecting with a 
borescope. EASA AD 2020-0206 defines the affected part as the 90-degree 
TGB shaft installed on TGB P/N 109-0440-06-01-101, whereas the 
applicability paragraph of this AD includes TGB P/N 109-0440-06-101 
instead.

Costs of Compliance

    The FAA estimates that this AD affects 134 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.
    Borescope inspecting the TGB output shaft takes about 3 work-hours 
for an estimated cost of $255 per helicopter and $34,170 for the U.S. 
fleet per inspection cycle.
    Replacing a TGB takes about 18 work-hours and parts cost about 
$49,000 (overhauled TGB) for an estimated cost of $50,530 per 
helicopter.
    The FAA has included all known costs in its cost estimate. 
According to the manufacturer, however, some of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected operators.

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

[[Page 46961]]

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

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 2020-19-11, Amendment 39-21254 (85 
FR 59404, September 22, 2020); and
0
b. Adding the following new airworthiness directive:

2021-16-06 Leonardo S.p.a.: Amendment 39-21668; Docket No. FAA-2021-
0373; Project Identifier MCAI-2020-01352-R.

(a) Effective Date

    This airworthiness directive (AD) is effective September 27, 
2021.

(b) Affected ADs

    This AD replaces AD 2020-19-11, Amendment 39-21254 (85 FR 59404, 
September 22, 2020).

(c) Applicability

    This AD applies to Leonardo S.p.a. Model A119 and AW119 MKII 
helicopters, certificated in any category, with 90-degree tail rotor 
gearbox (TGB) part number (P/N) 109-0440-06-101 or 109-0440-06-105, 
and with TGB shaft P/N 109-0443-03-107 having a serial number (S/N) 
listed in Table 1 of Leonardo Helicopters Alert Service Bulletin No. 
119-090, Revision A, dated September 14, 2020 (ASB 119-090), 
installed.
    Note 1 to paragraph (c): A TGB shaft is also referred to as a 
mast gear assembly.

(d) Subject

    Joint Aircraft Service Component (JASC) Code: 6510, Tail Rotor 
Drive Shaft.

(e) Unsafe Condition

    This AD was prompted by two occurrences of corrosion on the 
internal surface of the TGB shaft. The FAA is issuing this AD to 
detect corrosion of the TGB shaft. The unsafe condition, if not 
addressed, could result in failure of the tail rotor, possibly 
resulting in reduced control of the helicopter.

(f) Compliance

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

(g) Required Actions

    (1) Within 25 hours time-in-service (TIS) or 3 months, whichever 
occurs first after the effective date of this AD, and thereafter at 
intervals not to exceed 6 months, borescope inspect the entire 
internal surface of the TGB shaft for corrosion. Refer to Detail A 
of Figure 1 of ASB 119-090, for a depiction of the entry point for 
the borescope. If there is corrosion, before further flight, remove 
the TGB from service.
    (2) As of the effective date of this AD, do not install on any 
helicopter any TGB P/N 109-0440-06-101 or 109-0440-06-105 that has 
TGB shaft P/N 109-0443-03-107 having an S/N listed in Table 1 of ASB 
119-090, unless the actions required by paragraph (g)(1) of this AD 
have been accomplished.

(h) Special Flight Permits

    A special flight permit may be permitted provided that there are 
no passengers onboard.

(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)(1) of 
this AD. Information may be emailed to: [email protected].
    (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) Related Information

    (1) For more information about this AD, contact Rao Edupuganti, 
Aerospace Engineer, Dynamic Systems Section, Technical Innovation 
Policy Branch, Policy & Innovation Division, FAA, 10101 Hillwood 
Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email 
[email protected].
    (2) The subject of this AD is addressed in European Union 
Aviation Safety Agency (EASA) AD 2020-0206, dated September 30, 
2020. You may view the EASA AD at https://www.regulations.gov in 
Docket No. FAA-2021-0373.

(k) 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) Leonardo Helicopters Alert Service Bulletin No. 119-090, 
Revision A, dated September 14, 2020.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact 
Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, 
Viale G.Agusta 520, 21017 C.Costa di Samarate (Va) Italy; telephone 
+39-0331-225074; fax +39-0331-229046; or at https://customerportal.leonardocompany.com/en-US/.
    (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 (817) 222-5110.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email: [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on August 16, 2021.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-17951 Filed 8-20-21; 8:45 am]
BILLING CODE 4910-13-P

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