Federal Register / Vol. 87, No. 59 / Monday, March 28, 2022 / Proposed Rules 17209 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0296; Project 

Identifier MCAI–2021–01064–E] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG (Type 

Certificate Previously Held by RollsRoyce plc) Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede Airworthiness Directive (AD) 

2021–15–01, which applies to all RollsRoyce Deutschland Ltd & Co KG (RRD) 

Trent XWB–75, Trent XWB–79, Trent 

XWB–79B, Trent XWB–84, and Trent 

XWB–97 model turbofan engines. AD 

2021–15–01 requires revisions to the 

airworthiness limitations section (ALS) 

of the Rolls-Royce (RR) Trent XWB time 

limits manual (TLM) and the operator’s 

existing approved aircraft maintenance 

program (AMP). Since the FAA issued 

AD 2021–15–01, the manufacturer has 

revised the TLM life limits and updated 

mandatory inspection intervals of 

certain critical rotating parts. This 

proposed AD would require revisions to 

the ALS of the RR Trent XWB TLM and 

the operator’s existing approved AMP, 

as specified in a European Union 

Aviation Safety Agency (EASA) AD, 

which is proposed for incorporation by 

reference (IBR). The FAA is proposing 

this AD to address the unsafe condition 

on these products. 

DATES: The FAA must receive comments 

on this proposed AD by May 12, 2022. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

https://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE, Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For material that is proposed for IBR 

in this AD, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, 

Germany; phone: +49 221 8999 000; 

email: ADs@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, 

Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. 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–2022– 

0296. For the material identified in this 

AD that is not incorporated by 

reference, contact Rolls-Royce plc, 

Corporate Communications, P.O. Box 

31, Derby, DE24 8BJ, United Kingdom; 

phone: +44 (0)1332 242424; fax: +44 

(0)1332 249936; website: https://

www.rolls-royce.com/contact-us.aspx. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2022–0296; 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 

NPRM, the EASA AD, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

FOR FURTHER INFORMATION CONTACT: 

Nicholas Paine, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 

District Avenue, Burlington, MA 01803; 

phone: (781) 238–7116; email: 

nicholas.j.paine@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2022–0296; Project Identifier 

MCAI–2021–01064–E’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact we receive about this proposed 

AD. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Nicholas Paine, 

Aviation Safety Engineer, ECO Branch, 

FAA, 1200 District Avenue, Burlington, 

MA 01803. Any commentary that the 

FAA receives which is not specifically 

designated as CBI will be placed in the 

public docket for this rulemaking. 

Background 

The FAA issued AD 2021–15–01, 

Amendment 39–21648 (86 FR 36487, 

July 12, 2021) (AD 2021–15–01), for all 

RRD Trent XWB–75, Trent XWB–79, 

Trent XWB–79B, Trent XWB–84, and 

Trent XWB–97 model turbofan engines. 

AD 2021–15–01 was prompted by the 

manufacturer revising the TLM to 

incorporate repairs to the low-pressure 

compressor (LPC) blades and introduce 

a new fan blade inspection. AD 2021– 

15–01 requires revisions to the ALS of 

the RR Trent XWB TLM and the 

operator’s existing approved AMP. The 

agency issued AD 2021–15–01 to 

prevent the failure of critical rotating 

parts. 

Actions Since AD 2021–15–01 Was 

Issued 

Since the FAA issued AD 2021–15– 

10, EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2021–0217, 

dated September 23, 2021 (EASA AD 

2021–0217), to address an unsafe 

condition for all RRD Trent XWB–75, 

Trent XWB–79, Trent XWB–79B, Trent 

XWB–84, and Trent XWB–97 model 

turbofan engines. 

This proposed AD was prompted by 

the manufacturer revising the TLM to 

introduce new instructions for repairs to 

the LPC blades and fan blade 

inspections. The FAA is proposing this 

AD to prevent the failure of critical 

rotating parts. This condition, if not 

addressed, could result in failure of one 


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17210 Federal Register / Vol. 87, No. 59 / Monday, March 28, 2022 / Proposed Rules 

or more engines, loss of thrust control, 

and loss of the airplane. See EASA AD 

2021–0217 for additional background 

information. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the EASA AD. The FAA is 

issuing this AD after determining that 

the unsafe condition described 

previously is likely to exist or develop 

in other products of the same type 

design. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed EASA AD 2021– 

0217. EASA AD 2021–0217 describes 

actions for the incorporation of revised 

life limits and updated mandatory 

inspection intervals of certain critical 

rotating parts into the ALS of the RR 

Trent XWB TLM, as applicable to each 

engine model, and the operator’s 

existing approved AMP. This material is 

reasonably available because the 

interested parties have access to it 

through their normal course of business 

or by the means identified in 

ADDRESSES. 

Other Related Service Information 

The FAA reviewed Rolls-Royce 

Airworthiness Limitations (Mandatory 

parts lives), TRENTXWB–A–05–10–01– 

00A01–030A–D, Revision 016, dated 

May 1, 2021, of the Rolls-Royce Trent 

XWB TLM TRENTXWB–K0680–TIME0– 

01; Rolls-Royce Airworthiness 

Limitations (Mandatory Parts Lives), 

TRENTXWB–B–05–10–01–00A01– 

030A–D, Revision 003, dated April 19, 

2021, of the Rolls-Royce Trent XWB 

TLM TRENTXWB–K0680–TIME0–01; 

Rolls-Royce Airworthiness Limitations 

(Mandatory inspections), TRENTXWB– 

A–05–20–01–00A01–030A–D, Revision 

015, dated May 1, 2021, of the RollsRoyce Trent XWB TLM TRENTXWB– 

K0680–TIME0–01; and Rolls-Royce 

Airworthiness Limitations (Mandatory 

inspections), TRENTXWB–B–05–20– 

01–00A01–030A–D, Revision 008, dated 

April 19, 2021, of the Rolls-Royce Trent 

XWB TLM TRENTXWB–K0680–TIME0– 

01. These sections of the TLM specify 

inspection intervals and life limits, 

differentiated by engine model, for 

critical rotating parts. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

EASA AD 2021–0217, described 

previously, as incorporated by 

reference, except for any differences 

identified as exceptions in the 

regulatory text of this proposed AD. 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA developed a process to 

use some civil aviation authority (CAA) 

ADs as the primary source of 

information for compliance with 

requirements for corresponding FAA 

ADs. The FAA has since coordinated 

with other manufacturers and CAAs to 

use this process. As a result, the FAA 

proposes to incorporate by reference 

EASA AD 2021–0217 in the FAA final 

rule. Service information required by 

the EASA AD for compliance will be 

available at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2022–0296 after the FAA final 

rule is published. 

Differences Between This Proposed AD 

and the EASA AD 

Definitions 

Where EASA AD 2021–0217 defines 

the AMP as the approved Aircraft 

Maintenance Programme on the basis of 

which the operator or the owner ensures 

the continuing airworthiness of each 

operated engine, this proposed AD 

defines the AMP as the Aircraft 

Maintenance Program on the basis of 

which the operator or the owner ensures 

the continuing airworthiness of each 

operated airplane. 

Compliance 

Where EASA AD 2021–0217 requires 

revising the approved AMP within 12 

months after the effective date of EASA 

AD 2021–0217, this proposed AD 

requires revising the approved AMP and 

ALS within 120 days after the effective 

date of this AD. 

Mandatory Inspections 

This proposed AD does not require 

compliance with paragraph (1), 

Mandatory Inspections and 

Replacement of Life Limited Parts, of 

EASA AD 2021–0217. 

Corrective Action(s) 

This proposed AD does not require 

compliance with paragraph (2), 

Corrective Action(s), of EASA AD 2021– 

0217. 

Credit 

This proposed AD does not require 

compliance with paragraph (4), Credit, 

of EASA AD 2021–0217. 

Recording AD Compliance 

This proposed AD does not require 

compliance with paragraph (5), 

Recording AD Compliance, of EASA AD 

2021–0217. 

Remarks 

This proposed AD does not require 

compliance with the ‘‘Remarks’’ section 

of EASA AD 2021–0217. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 30 

engines installed on airplanes of U.S. 

registry. 

The FAA estimates the following 

costs to comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Revise the ALS of the RR Trent XWB TLM 

and the operator’s existing approved AMP.

1 work-hour × $85 per hour = $85 ................. $0 $85 $2,550 

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 


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Federal Register / Vol. 87, No. 59 / Monday, March 28, 2022 / Proposed Rules 17211 

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 

The FAA determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would 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 proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would 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 Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 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 

2021–15–01, Amendment 39–21648 (86 

FR 36487, July 12, 2021); and 

■ b. Adding the following new 

airworthiness directive: 

Rolls-Royce Deutschland Ltd & Co KG (Type 

Certificate previously held by RollsRoyce plc): Docket No. FAA–2022–0296; 

Project Identifier MCAI–2021–01064–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) action by May 

12, 2022. 

(b) Affected ADs 

This AD replaces AD 2021–15–01, 

Amendment 39–21648 (86 FR 36487, July 12, 

2021). 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG Trent XWB–75, 

Trent XWB–79, Trent XWB–79B, Trent 

XWB–84, and Trent XWB–97 model turbofan 

engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7200, Engine Turbine/Turboprop. 

(e) Unsafe Condition 

This AD was prompted by the 

manufacturer revising the time limits manual 

(TLM) to incorporate revised life limits and 

updated mandatory inspection intervals of 

certain critical rotating parts. The FAA is 

issuing this AD to prevent the failure of 

critical rotating parts. The unsafe condition, 

if not addressed, could result in failure of one 

or more engines, loss of thrust control, and 

loss of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraph (h) of this 

AD: Perform all required actions within the 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2021–0217. 

(h) Exceptions to EASA AD 2021–0217 

(1) Where EASA AD 2021–0217 defines the 

AMP as the approved Aircraft Maintenance 

Programme on the basis of which the 

operator or the owner ensures the continuing 

airworthiness of each operated engine, this 

AD defines the AMP as the Aircraft 

Maintenance Program on the basis of which 

the operator or the owner ensures the 

continuing airworthiness of each operated 

airplane. 

(2) Where EASA AD 2021–0217 requires 

revising the approved aircraft maintenance 

program (AMP) within 12 months after the 

effective date of EASA AD 2021–0217, this 

AD requires revising the approved AMP and 

airworthiness limitations section (ALS) 

within 120 days after the effective date of this 

AD. 

(3) This AD does not require compliance 

with paragraph (1), Mandatory Inspections 

and Replacement of Life Limited Parts, of 

EASA AD 2021–0217. 

(4) This AD does not require compliance 

with paragraph (2), Corrective Action(s), of 

EASA AD 2021–0217. 

(5) This AD does not require compliance 

with paragraph (4), Credit, of EASA AD 

2021–0217. 

(6) This AD does not require compliance 

with paragraph (5), Recording AD 

Compliance, of EASA AD 2021–0217. 

(7) This AD does not require compliance 

with the ‘‘Remarks’’ section of EASA AD 

2021–0217. 

(i) 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 paragraph (j)(2) of this AD and 

email 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. 

(j) Related Information 

(1) For more information about EASA AD 

2021–0217, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; 

phone: +49 221 8999 000; email: ADs@

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, Airworthiness Products 

Section, Operational Safety Branch, 1200 

District Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

This material may be found in the AD docket 

at https://www.regulations.gov by searching 

for and locating Docket No. FAA–2022–0296. 

(2) 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; email: nicholas.j.paine@faa.gov. 

(3) For service information identified in 

this AD, contact Rolls-Royce plc, Corporate 

Communications, P.O. Box 31, Derby, DE24 

8BJ, United Kingdom; phone: +44 (0)1332 

242424; fax: +44 (0)1332 249936; website: 

https://www.rolls-royce.com/contact-us.aspx. 

You may view this referenced 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 (817) 222–5110. 

Issued on March 22, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–06409 Filed 3–25–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0291; Project 

Identifier MCAI–2021–01321–A] 

RIN 2120–AA64 

Airworthiness Directives; British 

Aerospace (Operations) Limited and 

British Aerospace Regional Aircraft 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 


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