Airworthiness Directives; Airbus Helicopters, 34597-34599 [2020-12342]

Download as PDF 34597 Rules and Regulations Federal Register Vol. 85, No. 110 Monday, June 8, 2020 This section of the FEDERAL REGISTER contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510. The Code of Federal Regulations is sold by the Superintendent of Documents. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2020–0239; Product Identifier 2018–SW–073–AD; Amendment 39–21136; AD 2020–12–02] RIN 2120–AA64 Airworthiness Directives; Airbus Helicopters Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC120B helicopters. This AD was prompted by a report that a changed manufacturing process for the tail rotor blades (TRB) was implemented, affecting the structural characteristics of the blades and generating a new part number for these blades. This AD requires reidentifying each affected TRB having a certain part number and serial number and establishing a life limit for the new part numbers. This AD also prohibits installation of any affected TRB identified with the old part number on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective July 13, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of July 13, 2020. ADDRESSES: For service information identified in this final rule, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 972–641–0000 or 800–232– 0323; fax 972–641–3775; or at https:// www.airbus.com/helicopters/services/ technical-support.html. You may view this service information at the FAA, khammond on DSKJM1Z7X2PROD with RULES SUMMARY: VerDate Sep<11>2014 18:41 Jun 05, 2020 Jkt 250001 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 on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0239. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020– 0239; 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 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: Kristi Bradley, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5485; email Kristin.Bradley@faa.gov. SUPPLEMENTARY INFORMATION: Discussion The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Airbus Helicopters Model EC120B helicopters. The NPRM published in the Federal Register on March 11, 2020 (85 FR 14178). The NPRM was prompted by a report that a changed manufacturing process for the TRB was implemented, affecting the structural characteristics of the blades and generating a new part number for these blades. The NPRM proposed to require re-identifying each affected TRB having a certain part number and serial number and establishing a life limit for the new part numbers. The NPRM also proposed to prohibit installation of any affected TRB identified with the old part number on any helicopter. The FAA is issuing this AD to ensure the new part number (P/N) TRBs do not exceed their life limit, which could lead to loss of the TRB and subsequent loss of control of the helicopter. PO 00000 Frm 00001 Fmt 4700 Sfmt 4700 The European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA), which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2018–0183, dated August 28, 2018 (also referred to as the Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for all Airbus Helicopters Model EC120B helicopters. You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2020–0239. Comments The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public. Conclusion The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes: • Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the NPRM. Related Service Information Under 1 CFR Part 51 Airbus Helicopters has issued Alert Service Bulletin EC120–04A008, Revision 0, dated July 18, 2018 (‘‘ASB EC120–04A008’’). This service information describes procedures for reidentifying a TRB with P/N C642A0300103 for certain serial numbers as specified in ASB EC120– 04A008. 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. Costs of Compliance The FAA estimates that this AD affects 94 helicopters of U.S. registry. The FAA estimates the following costs to comply with this AD: E:\FR\FM\08JNR1.SGM 08JNR1 34598 Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Rules and Regulations ESTIMATED COSTS FOR REQUIRED ACTIONS * Labor cost Parts cost Cost per product Cost on U.S. operators 1 work-hour × $85 per hour = $85 .............................................................................................. $0 ** $85 $7,990 * * The FAA has received no definitive data that would enable providing cost estimates for the additional applicable maintenance instructions specified in this AD. ** The FAA has received no definitive data on the parts cost. 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, (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. khammond on DSKJM1Z7X2PROD with RULES List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: VerDate Sep<11>2014 18:41 Jun 05, 2020 Jkt 250001 having P/N C642A0300104 or P/N C642A0300105. 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 (AD): ■ 2020–12–02 Airbus Helicopters: Amendment 39–21136; Docket No. FAA–2020–0239; Product Identifier 2018–SW–073–AD. (a) Effective Date This AD is effective July 13, 2020. (b) Affected ADs None. (c) Applicability This AD applies to all Airbus Helicopters Model EC120B helicopters, certificated in any category. (d) Subject The Joint Aircraft System/Component (JASC) Code 6410, Tail rotor blades. (e) Reason This AD was prompted by a report that a new manufacturing process for the tail rotor blades (TRBs) has been implemented, affecting the structural characteristics of the TRB and generating a new part number (P/N) for these blades. It was determined that a new life limit is needed for the new P/N TRBs. The FAA is issuing this AD to ensure the new P/N TRBs do not exceed their life limit, which could lead to loss of the TRB and subsequent loss of control of the helicopter. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Definition of an Affected Part for ReIdentification and Validation of Rework/ Repair/Modification An ‘‘affected part’’ is a TRB having P/N C642A0300103 and a serial number specified in Appendix 4.A. of Airbus Helicopters Alert Service Bulletin EC120–04A008, Revision 0, dated July 18, 2018 (‘‘ASB EC120–04A008’’). (h) Part Replacement (Life Limit Implementation) Before exceeding 8,500 hours time-inservice (TIS) since first installation on a helicopter: Remove from service each TRB PO 00000 Frm 00002 Fmt 4700 Sfmt 4700 (i) Part Re-Identification and Validation of Rework/Repair/Modification (1) Within 1,000 hours TIS after the effective date of this AD: Re-identify each affected part in accordance with 3.B. of the Accomplishment Instructions of ASB EC120– 04A008. (2) Within 6 months after the effective date of this AD, for each affected part which has been subject to rework, repair, or modification before the re-identification as required by paragraph (i)(1) of this AD, contact the Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, for additional applicable maintenance instructions and, within the compliance time identified in those instructions, accomplish those instructions accordingly. (j) Parts Installation Prohibition and Rework/Repair/Modification Limitation (1) As of the effective date of this AD, no person may install a TRB having P/N C642A0300103 and a serial number specified in Appendix 4.A. of ASB EC120–04A008 on any helicopter. (2) As of the effective date of this AD, no person may accomplish any rework, repair, or modification of an affected part, unless it has been determined that the rework, repair, or modification is FAA-approved for P/N C642A0300105. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Kristi Bradley, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5485; email 9-ASW-FTWAMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, notify your principal inspector or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC. (l) Related Information (1) Refer to Mandatory Continuing Airworthiness Information (MCAI) European Aviation Safety Agency (now European Union Aviation Safety Agency) AD 2018– 0183, dated August 28, 2018, for related information. This MCAI may be found in the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2020–0239. E:\FR\FM\08JNR1.SGM 08JNR1 Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Rules and Regulations (2) For more information about this AD, contact Kristi Bradley, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817–222–5485; email Kristin.Bradley@faa.gov. (m) 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 this AD specifies otherwise. (i) Airbus Helicopters Alert Service Bulletin EC120–04A008, Revision 0, dated July 18, 2018. (ii) [Reserved] (3) For service information identified in this AD, contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; telephone 972–641–0000 or 800–232–0323; fax 972–641–3775; or at https:// www.helicopters.airbus.com/website/en/ref/ Technical-Support_73.html. (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/ibrlocations.html. Issued on May 28, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2020–12342 Filed 6–5–20; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2019–1109; Project Identifier MCAI–2019–00115–E; Amendment 39–21135; AD 2020–12–01] RIN 2120–AA64 khammond on DSKJM1Z7X2PROD with RULES Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by RollsRoyce plc) Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd. & Co KG SUMMARY: VerDate Sep<11>2014 18:41 Jun 05, 2020 Jkt 250001 (RRD) Trent XWB–75, XWB–79, XWB– 79B, and XWB–84 model turbofan engines. This AD was prompted by analysis by the manufacturer of the lowpressure compressor (LPC) outlet guide vane (OGV) assembly and LPC OGV outer mount ring assembly. The analysis predicted that when the front engine mount is in the fail-safe condition, the most highly stressed LPC OGV outer mount ring assembly has a life that could be substantially less than one shop visit interval. This AD requires initial and repetitive inspections of the LPC OGV outer mount ring assembly and, depending on the results of the inspections, possible replacement of the LPC OGV outer mount ring assembly. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective July 13, 2020. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of July 13, 2020. ADDRESSES: For service information identified in this final rule, contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, 15827 BlankenfeldeMahlow, Germany; phone: +49 (0) 33 708 6 0; email: https://www.rollsroyce.com/contact-us.aspx. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781–238–7759. It is also available on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA–2019–1109. Examining the AD Docket You may examine the AD docket on the internet at https:// www.regulations.gov by searching for and locating Docket No. FAA–2019– 1109; 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 mandatory continuing airworthiness information (MCAI), 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: Stephen Elwin, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781–238–7236; fax: 781–238–7199; email: Stephen.L.Elwin@faa.gov. PO 00000 Frm 00003 Fmt 4700 Sfmt 4700 34599 SUPPLEMENTARY INFORMATION: Discussion The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain RRD Trent XWB–75, XWB–79, XWB–79B, and XWB–84 turbofan engines. The NPRM published in the Federal Register on February 12, 2020 (85 FR 7899). The NPRM was prompted by analysis by the manufacturer of the LPC OGV assembly and LPC OGV outer mount ring assembly. The analysis predicted that when the front engine mount is in the fail-safe condition, the most highly stressed LPC OGV outer mount ring assembly has a life that could be substantially less than one shop visit interval. The NPRM proposed to require initial and repetitive inspections of the LPC OGV outer mount ring assembly and, depending on the results of the inspections, possible replacement of the LPC OGV outer mount ring assembly. The FAA is issuing this AD to address the unsafe condition on these products. The European Union Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community, has issued EASA AD 2019–0234, dated September 19, 2019 (referred to after this as ‘‘the MCAI’’), to address the unsafe condition on these products. The MCAI states: The purpose of the engine mount is to position the engine relative to the pylon and to transfer all loads and rotational moments between the engine and pylon. The front engine mount support structure (EMSS) consists of the low pressure compressor (LPC) outlet guide vane (OGV) assembly and OGV outer mount ring assembly. Revised analysis of these parts, when the front engine mount (FEM) is engaged in the fail-safe condition, has now been undertaken using more advanced modelling techniques. This analysis predicts that, once the FEM is in the fail-safe condition, the most highly stressed LPC OGV has a life that could be substantially less than one shop visit interval. This condition, if not detected and corrected, could lead to failure of the EMSS, possibly resulting in engine separation and reduced control of the aeroplane. To address this potential unsafe condition, Rolls-Royce introduced inspections to protect against the FEM entering the failsafe condition following a failure of the OGV outer mount ring assembly lugs, and published the NMSB to provide instructions. For the reason described above, this [EASA] AD requires repetitive inspections of the OGV outer mount ring assembly lug fillet area and, depending on findings, accomplishment of applicable corrective action(s). You may obtain further information by examining the MCAI in the AD E:\FR\FM\08JNR1.SGM 08JNR1

Agencies

[Federal Register Volume 85, Number 110 (Monday, June 8, 2020)]
[Rules and Regulations]
[Pages 34597-34599]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-12342]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains regulatory documents 
having general applicability and legal effect, most of which are keyed 
to and codified in the Code of Federal Regulations, which is published 
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents. 

========================================================================


Federal Register / Vol. 85, No. 110 / Monday, June 8, 2020 / Rules 
and Regulations

[[Page 34597]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0239; Product Identifier 2018-SW-073-AD; Amendment 
39-21136; AD 2020-12-02]
RIN 2120-AA64


Airworthiness Directives; Airbus Helicopters

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Airbus Helicopters Model EC120B helicopters. This AD was prompted by a 
report that a changed manufacturing process for the tail rotor blades 
(TRB) was implemented, affecting the structural characteristics of the 
blades and generating a new part number for these blades. This AD 
requires re-identifying each affected TRB having a certain part number 
and serial number and establishing a life limit for the new part 
numbers. This AD also prohibits installation of any affected TRB 
identified with the old part number on any helicopter. The FAA is 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective July 13, 2020.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of July 13, 
2020.

ADDRESSES: For service information identified in this final rule, 
contact Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 
75052; telephone 972-641-0000 or 800-232-0323; fax 972-641-3775; or at 
https://www.airbus.com/helicopters/services/technical-support.html. 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 on the internet at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2020-0239.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0239; 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 
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: Kristi Bradley, Aviation Safety 
Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 
10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817-222-5485; 
email [email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 by adding an AD that would apply to all Airbus Helicopters 
Model EC120B helicopters. The NPRM published in the Federal Register on 
March 11, 2020 (85 FR 14178). The NPRM was prompted by a report that a 
changed manufacturing process for the TRB was implemented, affecting 
the structural characteristics of the blades and generating a new part 
number for these blades. The NPRM proposed to require re-identifying 
each affected TRB having a certain part number and serial number and 
establishing a life limit for the new part numbers. The NPRM also 
proposed to prohibit installation of any affected TRB identified with 
the old part number on any helicopter. The FAA is issuing this AD to 
ensure the new part number (P/N) TRBs do not exceed their life limit, 
which could lead to loss of the TRB and subsequent loss of control of 
the helicopter.
    The European Aviation Safety Agency (now European Union Aviation 
Safety Agency) (EASA), which is the Technical Agent for the Member 
States of the European Union, has issued EASA AD 2018-0183, dated 
August 28, 2018 (also referred to as the Mandatory Continuing 
Airworthiness Information, or ``the MCAI''), to correct an unsafe 
condition for all Airbus Helicopters Model EC120B helicopters. You may 
examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0239.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The FAA received no comments on the NPRM or 
on the determination of the cost to the public.

Conclusion

    The FAA reviewed the relevant data and determined that air safety 
and the public interest require adopting this final rule as proposed, 
except for minor editorial changes. The FAA has determined that these 
minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    Airbus Helicopters has issued Alert Service Bulletin EC120-04A008, 
Revision 0, dated July 18, 2018 (``ASB EC120-04A008''). This service 
information describes procedures for re-identifying a TRB with P/N 
C642A0300103 for certain serial numbers as specified in ASB EC120-
04A008. 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.

Costs of Compliance

    The FAA estimates that this AD affects 94 helicopters of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

[[Page 34598]]



                                     Estimated Costs for Required Actions *
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $85 per hour = $85.............................           $0 **              $85         $7,990 *
----------------------------------------------------------------------------------------------------------------
* The FAA has received no definitive data that would enable providing cost estimates for the additional
  applicable maintenance instructions specified in this AD.
** The FAA has received no definitive data on the parts cost.

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,
    (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.

Adoption of 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 adding the following new airworthiness 
directive (AD):

2020-12-02 Airbus Helicopters: Amendment 39-21136; Docket No. FAA-
2020-0239; Product Identifier 2018-SW-073-AD.

(a) Effective Date

    This AD is effective July 13, 2020.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Airbus Helicopters Model EC120B 
helicopters, certificated in any category.

(d) Subject

    The Joint Aircraft System/Component (JASC) Code 6410, Tail rotor 
blades.

(e) Reason

    This AD was prompted by a report that a new manufacturing 
process for the tail rotor blades (TRBs) has been implemented, 
affecting the structural characteristics of the TRB and generating a 
new part number (P/N) for these blades. It was determined that a new 
life limit is needed for the new P/N TRBs. The FAA is issuing this 
AD to ensure the new P/N TRBs do not exceed their life limit, which 
could lead to loss of the TRB and subsequent loss of control of the 
helicopter.

(f) Compliance

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

(g) Definition of an Affected Part for Re-Identification and Validation 
of Rework/Repair/Modification

    An ``affected part'' is a TRB having P/N C642A0300103 and a 
serial number specified in Appendix 4.A. of Airbus Helicopters Alert 
Service Bulletin EC120-04A008, Revision 0, dated July 18, 2018 
(``ASB EC120-04A008'').

(h) Part Replacement (Life Limit Implementation)

    Before exceeding 8,500 hours time-in-service (TIS) since first 
installation on a helicopter: Remove from service each TRB having P/
N C642A0300104 or P/N C642A0300105.

(i) Part Re-Identification and Validation of Rework/Repair/Modification

    (1) Within 1,000 hours TIS after the effective date of this AD: 
Re-identify each affected part in accordance with 3.B. of the 
Accomplishment Instructions of ASB EC120-04A008.
    (2) Within 6 months after the effective date of this AD, for 
each affected part which has been subject to rework, repair, or 
modification before the re-identification as required by paragraph 
(i)(1) of this AD, contact the Manager, Safety Management Section, 
Rotorcraft Standards Branch, FAA, for additional applicable 
maintenance instructions and, within the compliance time identified 
in those instructions, accomplish those instructions accordingly.

(j) Parts Installation Prohibition and Rework/Repair/Modification 
Limitation

    (1) As of the effective date of this AD, no person may install a 
TRB having P/N C642A0300103 and a serial number specified in 
Appendix 4.A. of ASB EC120-04A008 on any helicopter.
    (2) As of the effective date of this AD, no person may 
accomplish any rework, repair, or modification of an affected part, 
unless it has been determined that the rework, repair, or 
modification is FAA-approved for P/N C642A0300105.

(k) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Safety Management Section, Rotorcraft Standards 
Branch, FAA, may approve AMOCs for this AD. Send your proposal to: 
Kristi Bradley, Aviation Safety Engineer, Safety Management Section, 
Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, 
TX 76177; telephone 817-222-5485; email [email protected].
    (2) For operations conducted under a 14 CFR part 119 operating 
certificate or under 14 CFR part 91, subpart K, notify your 
principal inspector or lacking a principal inspector, the manager of 
the local flight standards district office or certificate holding 
district office, before operating any aircraft complying with this 
AD through an AMOC.

(l) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) European Aviation Safety Agency (now European Union Aviation 
Safety Agency) AD 2018-0183, dated August 28, 2018, for related 
information. This MCAI may be found in the AD docket on the internet 
at https://www.regulations.gov by searching for and locating Docket 
No. FAA-2020-0239.

[[Page 34599]]

    (2) For more information about this AD, contact Kristi Bradley, 
Aviation Safety Engineer, Safety Management Section, Rotorcraft 
Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; 
telephone 817-222-5485; email [email protected].

(m) 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 this AD specifies otherwise.
    (i) Airbus Helicopters Alert Service Bulletin EC120-04A008, 
Revision 0, dated July 18, 2018.
    (ii) [Reserved]
    (3) For service information identified in this AD, contact 
Airbus Helicopters, 2701 N Forum Drive, Grand Prairie, TX 75052; 
telephone 972-641-0000 or 800-232-0323; fax 972-641-3775; or at 
https://www.helicopters.airbus.com/website/en/ref/Technical-Support_73.html.
    (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 May 28, 2020.
Lance T. Gant,
 Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2020-12342 Filed 6-5-20; 8:45 am]
 BILLING CODE 4910-13-P