Voglio sapere a riguardo di…

27268

Federal Register / Vol. 86, No. 96 / Thursday, May 20, 2021 / Rules and Regulations
g Required Actions 1 At the next engine shop visit after the effective date of this AD, remove the affected HPT inner stationary seal and replace with a HPT inner stationary seal that is eligible for installation.
2 After removing the affected HPT inner stationary seal required by paragraph g1, inspect the removed HPT inner stationary seal for honeycomb separation, as defined in the Accomplishment Instructions, paragraph 3.C.1, in CFM SB CFM565B S/B 720952, Revision 01, dated January 15, 2020, or in CFM SB CFM567B S/B 721054, Revision 01, dated January 15, 2020.
3 If honeycomb separation is found during the inspection required by paragraph g2 of this AD, before further flight:
i Remove the rotating air HPT front seal from service and replace with a rotating air HPT front seal that is eligible for installation.
ii Remove the HPT rotor blades and replace them with HPT rotor blades eligible for installation.
iii Remove the No. 3 ball bearing from service and replace with a No. 3 ball bearing eligible for installation.
h Definitions 1 For the purpose of this AD, an engine shop visit is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except for the following situations, which do not constitute an engine shop visit.
i Separation of engine flanges solely for the purpose of transportation of the engine without subsequent maintenance.
ii Separation of engine flanges solely for the purpose of replacing the fan or propulsor without subsequent maintenance.
2 For the purpose of this AD, an HPT
inner stationary seal that is eligible for installation is an HPT inner stationary seal:
i That is not listed in Planning Information, Paragraph 1.A., Table 1, of CFM
SB CFM565B S/B 720952, Revision 01, dated January 15, 2020, or in Planning Information, Paragraph 1.A., Table 1, CFM
SB CFM567B S/B 721054, Revision 01, dated January 15, 2020; or ii with a P/N 1808M56G01 and with a S/N listed in Paragraph 1.A., Table 1, of CFM
SB CFM565B S/B 720952, Revision 01, dated January 15, 2020, or Paragraph 1.A., Table 1, CFM SB CFM567B S/B 721054, Revision 01, dated January 15, 2020, that has been repaired per CFM565B ESM, 7241
03, REPAIR 003, or CFM567B ESM, 7241
03, REPAIR 003, after the year listed in Paragraph 1.A., Table 1, of CFM SB CFM56
5B S/B 720952, Revision 01, dated January 15, 2020, or Paragraph 1.A., Table 1, CFM SB
CFM567B S/B 721054, Revision 01, dated January 15, 2020.
3 For the purpose of this AD, a rotating air HPT front seal that is eligible for installation is any rotating air HPT front seal that was not removed from service as a result of the inspection of the HPT inner stationary seal required by paragraph g2 of this AD
in which there was a finding of honeycomb separation.
4 For the purpose of this AD, HPT rotor blades eligible for installation are new HPT

VerDate Sep<11>2014

16:06 May 19, 2021

Jkt 253001

rotor blades with zero flight hours since news or HPT rotor blades that have been inspected and returned to a serviceable condition using approved engine manual requirements.
5 For the purpose of this AD, a No. 3 ball bearing eligible for installation is any No. 3
ball bearing that was not removed from service as a result of the inspection of the HPT inner stationary seal required by paragraph g2 of this AD in which there was a finding of honeycomb separation.
i No Reporting Requirement The reporting requirements contained within the SBs referenced in paragraph g of this AD are not required by this AD.
j Alternative Methods of Compliance AMOCs 1 The Manager, ECO 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 Related Information. You may email your request to: ANE-AD-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.
k Related Information For more information about this AD, contact Christopher McGuire, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387120; fax: 781 2387199; email:
chris.mcguire@faa.gov.
l 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. 552a 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 CFM Service Bulletin CFM565B S/B
720952, Revision 01, dated January 15, 2020.
ii CFM Service Bulletin CFM567B S/B
721054, Revision 01, dated January 15, 2020.
3 For CFM service information identified in this AD, contact CFM International Inc., Aviation Operations Center, 1 Neumann Way, M/D Room 285, Cincinnati, OH 45125;
phone: 877 4323272; fax: 877 4323329;
email: aviation.fleetsupport@ge.com.
4 You may view this service information at 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 2387759.
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,
PO 00000

Frm 00008

Fmt 4700

Sfmt 4700

email: fedreg.legal@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on April 29, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202110607 Filed 51921; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210143; Product Identifier 2019SW024AD; Amendment 3921547; AD 20211014
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Deutschland GmbH
Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for certain Airbus Helicopters Deutschland GmbH
Model BO105A, BO105C, BO105S, and BO105LS A3 helicopters. This AD was prompted by the FAAs determination that aging of the elastomeric material in a tension torsion strap TT-strap could affect the structural characteristics of the TTstrap. This AD requires replacement of certain TT-straps with serviceable parts and implementation of a new storage life limit for TT-straps, as specified in a European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective June 24, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of June 24, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49
221 8999 000; email ADs@
easa.europa.eu; internet www.easa.europa.eu. You may find this material on the EASA website at https
ad.easa.europa.eu. You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information SUMMARY:

E:FRFM20MYR1.SGM

20MYR1