36064 Federal Register / Vol. 86, No. 128 / Thursday, July 8, 2021 / Rules and Regulations 

(2) For PW1919G, PW1921G, PW1922G, 

PW1923G, and PW1923G–A model turbofan 

engines, the installation of EEC FADEC 

software required by paragraph (g)(5) of this 

AD terminates the repetitive BSI 

requirements of paragraphs (g)(1) and (2) of 

this AD. 

(i) Installation Prohibition 

After the effective date of this AD, do not 

install EEC FADEC software earlier than 

version V2.11.10.4 or version V9.5.6.7 onto 

any engine identified in paragraph (c) of this 

AD. 

(j) Definitions 

(1) For the purpose of this AD, a ‘‘zero time 

spare’’ is an engine that had zero flight hours 

time-in-service when it was installed on an 

airplane after the airplane had entered 

service. 

(2) For the purpose of this AD, ‘‘EEC 

FADEC software that is eligible for 

installation’’ is EEC FADEC software version 

V2.11.10.4 or later for PW1519G, PW1521G, 

PW1521G–3, PW1521GA, PW1524G, 

PW1524G–3, PW1525G, PW1525G–3 model 

turbofan engines and EEC FADEC software 

version V9.5.6.7 or later for PW1919G, 

PW1921G, PW1922G, PW1923G, and 

PW1923G–A model turbofan engines. 

(k) 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. 

(3) AMOCs approved for AD 2019–21–11 

(84 FR 57813, October 29, 2019) are approved 

as AMOCs for the corresponding provisions 

of this AD except for paragraphs (g)(1)(i) 

through (iv) and (g)(3)(i) and (ii) of this AD. 

(l) Related Information 

For more information about this AD, 

contact Nicholas Paine, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7116; fax: (781) 238–7199; email: 

nicholas.j.paine@faa.gov. 

(m) Material Incorporated by Reference 

None. 

Issued on June 23, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–13873 Filed 7–7–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1174; Project 

Identifier MCAI–2019–00135–E; Amendment 

39–21594; AD 2021–12–07] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG (Type 

Certificate Previously Held by RollsRoyce Deutschland GmbH, Formerly 

BMW Rolls-Royce GmbH) Turbofan 

Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Rolls-Royce Deutschland Ltd & Co KG 

(RRD) BR700–710A1–10, BR700– 

710A2–20 and BR700–710C4–11 model 

turbofan engines. This AD was 

prompted by an investigation by RRD, 

which revealed a quality escape during 

the high-pressure turbine (HPT) stage 1 

disk rim cooling air hole manufacturing 

process. This AD requires removing 

affected HPT disks from service prior to 

reaching specified compliance times or 

at the next engine shop visit, whichever 

occurs first. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective August 12, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of August 12, 2021. 

ADDRESSES: For service information 

identified in this AD, contact RollsRoyce Deutschland Ltd & Co KG, 

Eschenweg 11, Dahlewitz 15827, 

Germany; phone: +49 33 7086 4040; 

email: rrd.techhelp@rolls-royce.com. 

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 

at https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1174. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2020–1174; 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: 

Wego Wang, Aviation Safety Engineer, 

ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: 

(781) 238–7134; fax: (781) 238–7199; 

email: wego.wang@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

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 BR700–710A1–10, 

BR700–710A2–20 and BR700–710C4–11 

model turbofan engines. The NPRM 

published in the Federal Register on 

January 21, 2021 (86 FR 6271). The 

NPRM was prompted by an 

investigation by RRD, which revealed a 

quality escape during the HPT stage 1 

disk rim cooling air hole manufacturing 

process. In the NPRM, the FAA 

proposed to require removing affected 

HPT disks from service prior to reaching 

specified compliance times or at the 

next engine shop visit, whichever 

occurs first. 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 2019–0299, dated December 10, 

2019 (referred to after this as ‘‘the 

MCAI’’), to address the unsafe condition 

on these products. The MCAI states: 

An occurrence was reported of an HPT 

stage 1 disc burst on an industrial gas turbine 

engine. Subsequent investigation revealed a 

quality escape during HPT stage 1 disc rim 

cooling air hole manufacturing process. A 

review revealed that 28 HPT stage 1 discs 

were subject to a similar quality escape, two 

of which have been recovered and removed 

from service. The consequence of this 

manufacturing error is that the affected parts 

can no longer safely reach their Declared Safe 

Cyclic Life (DSCL). 

This condition, if not corrected, may lead 

to failure of an affected part, possibly 

resulting in release of high-energy debris, 

with consequent damage to, and/or reduced 

control of, the aeroplane. To address this 

potentially unsafe condition, RRD issued the 

NMSB, providing instructions to remove the 

engine from service for in-shop replacement 

of the affected part. 

For the reasons described above, this 

[EASA] AD reduces the DSCL for the affected 


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Federal Register / Vol. 86, No. 128 / Thursday, July 8, 2021 / Rules and Regulations 36065 

parts, requires identification of the affected 

parts and removal from service of each 

affected engine for replacement of the 

affected part. This [EASA] AD also prohibits 

(re)installation of affected parts. 

You may obtain further information 

by examining the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2020–1174. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

two commenters. The commenters were 

the Air Line Pilots Association, 

International (ALPA) and an anonymous 

commenter. ALPA supported the NPRM 

without change. The anonymous 

commenter supported the NPRM but 

stated their opinion on the estimated 

costs. 

Request for Rolls-Royce To Share 

Replacement Part Cost 

An anonymous commenter indicated 

that Rolls-Royce could share the cost of 

new HPT disks since it was their 

manufacturing process that caused the 

defects in the HPT disks. 

The FAA does not determine who 

pays for the costs of an AD. The 

Estimated Costs paragraph indicates 

that, according to the manufacturer, all 

of the costs of this AD may be covered 

under a manufacturer warranty, thereby 

reducing the cost impact on affected 

operators. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, 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 

products. Except for minor editorial 

changes, this AD is adopted as proposed 

in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Rolls-Royce Alert 

Non-Modification Service Bulletin 

(NMSB) SB–BR700–72–A900659, 

Revision 1, dated November 5, 2019 (the 

NMSB). The Alert NMSB provides the 

part numbers and serial numbers for 

affected HPT disks, the serial numbers 

for all engines with an affected HPT 

disk installed, and instructions for 

replacement of the affected HPT disk. 

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 ADDRESSES. 

Costs of Compliance 

The FAA estimates that this AD 

affects 21 engines installed on airplanes 

of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace HPT disk ........................................... 20 work-hours × $85 per hour = $1,700 ........ $550,000 $551,700 $11,585,700 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, all 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 

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 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 

■ 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: 

2021–12–07 Rolls-Royce Deutschland Ltd & 

Co KG (Type Certificate previously held 

by Rolls-Royce Deutschland GmbH, 

formerly BMW Rolls-Royce GmbH): 

Amendment 39–21594; Docket No. 

FAA–2020–1174; Project Identifier 

MCAI–2019–00135–E. 

(a) Effective Date 

This AD is effective August 12, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) (Type 

Certificate previously held by Rolls-Royce 

Deutschland GmbH, formerly BMW RollsRoyce GmbH) BR700–710A1–10, BR700– 

710A2–20 and BR700–710C4–11 model 

turbofan engines with a high-pressure turbine 

(HPT) stage 1 disk having a part number and 

serial number listed in Planning Information, 

paragraph 1.A., of Rolls-Royce Alert NonVerDate Sep<11>2014 15:48 Jul 07, 2021 Jkt 253001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\08JYR1.SGM 08JYR1

lotter on DSK11XQN23PROD with RULES1
36066 Federal Register / Vol. 86, No. 128 / Thursday, July 8, 2021 / Rules and Regulations 

Modification Service Bulletin (NMSB) SB– 

BR700–72–A900659, Revision 1, dated 

November 5, 2019, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7230, Turbine Engine Compressor 

Section. 

(e) Unsafe Condition 

This AD was prompted by an investigation 

by RRD, which revealed a quality escape 

during the HPT stage 1 disk rim cooling air 

hole manufacturing process. The FAA is 

issuing this AD to prevent failure of the HPT 

stage 1 disk. The unsafe condition, if not 

addressed, could result in the release of highenergy debris, damage to the airplane, and 

reduced control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Before the affected HPT stage 1 disk 

exceeds 2,840 flight cycles (FCs) since new, 

or within 60 days after the effective date of 

this AD, whichever occurs later, but not to 

exceed 8 years after the effective date of this 

AD if using FCs, remove the affected HPT 

stage 1 disk from service and replace with a 

part eligible for installation. Guidance on 

replacing the HPT stage 1 disk can be found 

in the Accomplishment Instructions, 

paragraph 3.B., of Rolls-Royce Alert NonModification Service Bulletin (NMSB) SB– 

BR700–72–A900659, Revision 1, dated 

November 5, 2019. 

(h) Installation Prohibition 

After the effective date of this AD, do not 

install any affected HPT stage 1 disk onto any 

engine. 

(i) Definition 

For the purpose of this AD, a ‘‘part eligible 

for installation’’ is an HPT stage 1 disk that 

is not listed in paragraph 1.A. of Rolls-Royce 

Alert NMSB SB–BR700–72–A900659, 

Revision 1, dated November 5, 2019. 

(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 

(1) For more information about this AD, 

contact Wego Wang, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7134; fax: (781) 238–7199; email: 

wego.wang@faa.gov. 

(2) Refer to European Union Aviation 

Safety Agency (EASA) AD 2019–0299, dated 

December 10, 2019, for more information. 

You may examine the EASA AD in the AD 

docket on at https://www.regulations.gov by 

searching for and locating Docket No. FAA– 

2020–1174. 

(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. 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) Rolls-Royce Alert Non-Modification 

Service Bulletin SB–BR700–72–A900659, 

Revision 1, dated November 5, 2019. 

(ii) [Reserved] 

(3) For service information identified in 

this AD, contact Rolls-Royce Deutschland Ltd 

& Co KG, Eschenweg 11, Dahlewitz 15827, 

Germany; phone: +49 33 7086 4040; email: 

rrd.techhelp@rolls-royce.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) 238–7759. 

(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 June 14, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–14481 Filed 7–7–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket No. USCG–2021–0296] 

Safety Zones; Recurring Safety Zones 

in Captain of the Port Sault Sainte 

Marie 

AGENCY: Coast Guard, Department of 

Homeland Security (DHS). 

ACTION: Notice of enforcement of 

regulation. 

SUMMARY: The Coast Guard will enforce 

certain safety zones located in the 

Federal regulations for Annual Events in 

the Captain of the Port Sault Sainte 

Marie. This action is necessary and 

intended to protect the safety of life and 

property on navigable waters prior to, 

during, and immediately after these 

events. During each enforcement period, 

no person or vessel may enter the 

respective safety zone without the 

permission of the Captain of the Port 

Sault Sainte Marie or a designated 

representative. 

DATES: The regulations in 33 CFR 

165.918 as listed in Table 165.918 will 

be enforced for the events and times as 

stated in the SUPPLEMENTARY

INFORMATION below. 

FOR FURTHER INFORMATION CONTACT: If 

you have questions about this 

publication, call or email LT Deaven 

Palenzuela, Waterways Management 

division, Coast Guard Sector Sault 

Sainte Marie, U.S. Coast Guard; 

telephone 906–635–3223, email 

ssmprevention@uscg.mil. 

SUPPLEMENTARY INFORMATION: The Coast 

Guard will enforce the Safety Zones; 

Annual Events in the Captain of the Port 

Buffalo Zone listed in 33 CFR 165.918 

for the following events: 

i. Elk Rapids Harbor Days Fireworks; 

Elk Rapids, MI: The safety zone listed in 

Table 165.918(20) will be enforced on 

August 7, 2021, from 10 p.m. through 

10:30 p.m. on all U.S. navigable waters 

within the arc of a circle with an 

approximate 750-foot radius from the 

fireworks launch site located on a barge 

in position 44°54′6.95′′ N, 85°25′3.11′′ 

W. 

ii. Nautical City Fireworks, Rogers 

City: The safety zone listed in Table 

165.918(21) will be enforced on August 

8, 2021, from 10 p.m. through 10:30 

p.m. on all U.S. navigable waters within 

the arc of a circle with an approximate 

750-foot radius from the fireworks 

launch site located near Harbor View 

Road in position 45°25′04.72′′ N, 

83°47′51.21′′ W. 

This action is being taken to provide 

for the safety of life on navigable 

waterways during the fireworks 

displays. The regulations for safety 

zones within the Captain of the Port 

Sault Sainte Marie Zone, § 165.918, 

apply for these fireworks displays. 

Pursuant to 33 CFR 165.23, entry into, 

transiting, or anchoring within these 

safety zones during an enforcement 

period is prohibited unless authorized 

by the Captain of the Port Buffalo or 

their designated representative; 

designation need not be in writing. 

Those seeking permission to enter these 

safety zones may request permission 

from the Captain of the Port Buffalo via 

channel 16, VHF–FM. Vessels and 

persons granted permission to enter the 

safety zone shall obey the directions of 


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