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Federal Register / Vol. 86, No. 50 / Wednesday, March 17, 2021 / Rules and Regulations 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 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

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

20210513 Leonardo S.p.a: Amendment 3921456; Docket No. FAA20180309;
Project Identifier 2018SW014AD.
a Effective Date This airworthiness directive AD is effective April 21, 2021.
b Affected ADs None.
c Applicability This AD applies to Leonardo S.p.a. Model AW189 helicopters, certificated in any category.

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d Subject Joint Aircraft Service Component JASC
Code: 5510, Tail Stabilizer.
e Unsafe Condition This AD was prompted by two reported failures of the tail plane installation forward bolts bolts. The FAA is issuing this AD to address the failure of a bolt. This condition could result in reduced control of the helicopter.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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g Required Actions
i Related Information
1 For helicopters without a tail plane installation retromod part number P/N
8G5510P00511 tail plane retromod installed, before further flight and thereafter before each flight, inspect each forward attachment bolt bolt P/N 8G5510A06251
and 8G5510A05951 for a missing bolt head, breakage, and correct installation as depicted in Figure 12 of Leonardo Helicopters Emergency Alert Service Bulletin No. 189
177, Revision A, dated February 28, 2018
EASB 189177. If there is a missing bolt head, a broken bolt, or an incorrectly installed bolt, before further flight, remove the bolt from service and install the tail plane retromod by following the Accomplishment Instructions, Part II, paragraphs 3.1 through 3.33 of EASB 189177, except you are not required to discard parts and where EASB
189177 specifies contacting Leonardo PSE
for corrective action, the action must be accomplished using a method approved by the Manager, International Validations Branch, FAA. The Managers approval letter must specifically refer to this AD.
2 For helicopters with a tail plane retromod installed in accordance with Leonardo Helicopters Service Bulletin No.
189130, dated January 30, 2017, and for helicopters with serial number 49046, 49053, 89008, 89009, 92007, or 92008, within 10
hours time-in-service TIS after the effective date of this AD, loosen and then torque each nut P/N MS178257 nut to 15 to 20 Nm 11
to 14.75 ft-lbs, and install a cotter pin and lockwire each nut on the adjustable rod assembly P/N 4F5510A00232, as depicted in Figure 7, Detail N Step 6.5 and Figure 9, Detail P Step 7.9 of EASB 189177.
3 Within 10 hours TIS after installing a tail plane retromod, within 10 hours TIS after complying with paragraph g2 of this AD, or within 10 hours TIS after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 50 hours TIS, do the following:
i Determine the torque of each nut.
ii If the torque is less than 15 Nm 11 ftlbs or more than 20 Nm 14.75 ft-lbs, before further flight, remove the bolt and nut and inspect for wear. If there is any wear on the bolt or nut, before further flight, remove the bolt and nut from service.

1 The subject of this AD is addressed in European Aviation Safety Agency now European Union Aviation Safety Agency EASA Emergency AD 20180047E, dated February 28, 2018. This EASA AD may be found in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No. FAA20180309.
2 For more information about this AD, contact Scott Franke, Aviation Safety Engineer, General Aviation & Rotorcraft Section, International Validation Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX
76177; telephone 8172225178; email scott.franke@faa.gov.
3 Leonardo Helicopters Service Bulletin No. 189130, dated January 30, 2017, which is not incorporated by reference, contains additional information about the subject of this AD.
4 Service information identified in this AD that is not incorporated by reference is available at the addresses specified in paragraphs j3 and 4 of this AD.

h 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 i2 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.

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j 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 this AD specifies otherwise.
i Leonardo Helicopters Emergency Alert Service Bulletin No. 189177, Revision A, dated February 28, 2018.
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 +390331
225074; fax +390331229046; or at https
www.leonardocompany.com/en/home.
4 You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 8172225110.
5 You may view this material 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 February 24, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202105511 Filed 31621; 8:45 am BILLING CODE 491013P

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