30380 Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0129; Project 

Identifier AD–2020–01597–E; Amendment 

39–21577; AD 2021–11–15] 

RIN 2120–AA64 

Airworthiness Directives; International 

Aero Engines AG Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

International Aero Engines AG (IAE) 

V2500 model turbofan engines. This AD 

was prompted by an analysis performed 

by the manufacturer after an event 

involving an uncontained failure of a 

high-pressure turbine (HPT) 1st-stage 

disk that resulted in high-energy debris 

penetrating the engine cowling. This AD 

requires the performance of an 

ultrasonic inspection (USI) of the HPT 

1st-stage disk and HPT 2nd-stage disk 

and, depending on the results of the 

inspections, replacement of the HPT 1ststage disk or HPT 2nd-stage disk. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective July 13, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of July 13, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact 

International Aero Engines AG, 400 

Main Street, East Hartford, CT 06118; 

phone: (800) 565–0140; email: help24@

pw.utc.com; website: http://

fleetcare.pw.utc.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–2021– 

0129. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0129; 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: 

Nicholas Paine, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 

District Avenue, Burlington, MA 01803; 

phone: (781) 238–7742; fax: (781) 238– 

7199; email: nicholas.j.paine@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 IAE V2522–A5, V2524– 

A5, V2525–D5, V2527–A5, V2527E–A5, 

V2527M–A5, V2528–D5, V2530–A5, 

V2531–E5, and V2533–A5 model 

turbofan engines. The NPRM published 

in the Federal Register on March 8, 

2021 (86 FR 13225). The NPRM was 

prompted by an event involving an 

uncontained failure of an HPT 1st-stage 

disk that resulted in high-energy debris 

penetrating the engine cowling. On 

March 18, 2020, an Airbus Model A321– 

231 airplane, powered by IAE V2533– 

A5 model turbofan engines, experienced 

an uncontained HPT 1st-stage disk 

failure that resulted in an aborted 

takeoff. The uncontained failure of the 

HPT 1st-stage disk resulted in highenergy debris penetrating the engine 

cowling. The FAA published Emergency 

AD 2020–07–51 on March 21, 2020 

(followed by publication in the Federal 

Register on April 13, 2020, as a Final 

Rule, Request for Comments (85 FR 

20402)) and AD 2021–01–03 on January 

6, 2021 (86 FR 458), to remove from 

service HPT 1st-stage and HPT 2ndstage disks identified as having the 

highest risk of failure. Based on the root 

cause analysis performed since that 

event, the manufacturer identified a 

population of HPT 1st-stage disks and 

HPT 2nd-stage disks that require 

inspection and possible removal from 

service. In the NPRM, the FAA 

proposed to require the performance of 

a USI of the HPT 1st-stage disk and HPT 

2nd-stage disk and, depending on the 

results of the inspections, replacement 

of the HPT 1st-stage disk or HPT 2ndstage disk. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

three commenters. The commenters 

were Cathay Pacific Airways (Cathay), 

IAE, and an individual commenter. One 

commenter requested clarification on 

the compliance time for inspection. 

Another commenter requested 

clarification regarding additional 

inspections that are needed when parts 

are removed for piece part inspections. 

One commenter requested clarification 

regarding the definition of a part eligible 

for installation as well as the 

installation prohibition. An individual 

commenter supported the proposal 

without change. The following presents 

the comments received on the NPRM 

and the FAA’s response to each 

comment. 

Request To Clarify USI Interval for 

Different Thrust Ratings 

Cathay asked for clarification of the 

interval for performing the USI for any 

HPT 1st-stage disk or HPT 2nd-stage 

disk that has operated in different thrust 

ratings, such as from 27K to 33K, or 33K 

to 27K. Cathay reasoned that during the 

IAE V2500 Customer Council Call in 

December 2020, IAE used thrust ratings 

to indicate when to perform the 

inspections of the HPT 1st-stage disk or 

HPT 2nd-stage disk. 

The FAA reviewed IAE NonModification Service Bulletin (NMSB) 

No. V2500–ENG–72–0713, Revision 1, 

dated January 26, 2021 (IAE NMSB 

V2500–ENG–72–0713, Revision 1). This 

revised NMSB was published after the 

IAE V2500 Customer Council Call in 

December 2020. The revised NMSB 

removed references to thrust ratings in 

the Compliance section. Therefore, this 

AD does not distinguish inspection 

intervals based on thrust ratings. 

Request To Clarify Piece-Part 

Opportunity Inspection Requirements 

IAE requested clarification on 

whether an HPT 1st-stage disk and HPT 

2nd-stage disk with fewer than 100 

flight cycles (FCs) since the last piecepart fluorescent penetrant inspection 

(FPI) need to undergo another FPI if the 

same parts were removed for the piecepart opportunity USI in accordance with 

IAE NMSB V2500–ENG–72–0713, 

Revision 1. IAE reasoned that the V2500 

Maintenance Scheduling section of the 

Airworthiness Limitations Section 

(ALS) requires an FPI at each piece-part 

opportunity. 

The FAA clarifies that when an HPT 

1st-stage disk or an HPT 2nd-stage disk 

is removed for piece-part inspection, the 

ALS of the manufacturer’s Instructions 

for Continued Airworthiness may 

require additional inspections not 

required by this AD. The FAA refers the 

commenter to the ALS, which indicates 

that additional inspections are not 

required unless the part has more than 


jbell on DSKJLSW7X2PROD with RULES
Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Rules and Regulations 30381 

100 FCs since the last piece-part 

opportunity inspection, is damaged, or 

is the cause for the removal of the 

engine. Engine removal for the purposes 

of complying with this AD is not 

‘‘cause’’ for engine removal as stated in 

the ALS. The FAA added a note to 

paragraph (g)(1) of this AD to clarify 

piece-part inspection requirements. 

Request To Define Part Eligible for 

Installation 

Cathay requested that the FAA define 

‘‘part eligible for installation’’ in this 

AD. 

The FAA agrees and added a 

definition of a ‘‘part eligible for 

installation’’ in this AD. 

Request To Clarify Prohibition on 

Installation of Parts 

Cathay asked if there is a prohibition 

on the installation of parts in this AD. 

The FAA notes that if a HPT 1st-stage 

disk or HPT 2nd-stage disk does not 

pass the inspection required by 

paragraphs (g)(1) through (6) of this AD, 

the HPT 1st-stage disk or 2nd-stage disk, 

as applicable, must be removed from 

service. Any HPT 1st-stage disk or 2ndstage disk that passes the inspection is 

eligible for installation. As noted in an 

earlier comment response, the FAA 

added the definition of a ‘‘part eligible 

for installation’’ in this AD, which 

includes this clarification. 

Support for the AD 

An individual commenter expressed 

support for the AD as written. 

Conclusion 

The FAA reviewed the relevant data, 

considered any 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 and any other changes 

described previously, this AD is 

adopted as proposed in the NPRM. 

None of the changes will increase the 

economic burden on any operator. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed IAE NMSB No. 

V2500–ENG–72–0713, Revision 1, dated 

January 26, 2021. The NMSB identifies 

the affected HPT 1st-stage disks and 

HPT 2nd-stage disks on IAE V2522–A5, 

V2524–A5, V2525–D5, V2527–A5, 

V2527E–A5, V2527M–A5, V2528–D5, 

V2530–A5, and V2533–A5 model 

turbofan engines and specifies 

procedures for a USI of the HPT 1ststage disk and HPT 2nd-stage disk. 

The FAA also reviewed IAE NMSB 

No. V2500–E5–72–0015, dated 

December 15, 2020. The NMSB 

identifies the affected HPT 1st-stage 

disks and HPT 2nd-stage disks on IAE 

V2531–E5 model turbofan engines and 

specifies procedures for a USI of the 

HPT 1st-stage disk and HPT 2nd-stage 

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 1,100 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 

USI the HPT 1st-stage disk and HPT 2ndstage disk.20 work-hours × $85 per hour = $1,700 ........ $0 $1,700 $1,870,000 

The FAA estimates the following 

costs to do any necessary replacement 

that would be required based on the 

results of the inspection. The agency has 

no way of determining the number of 

aircraft that might need this 

replacement: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace the HPT 1st-stage disk or HPT 2nd-stage 

disk.

0 work-hours × $85 per hour = $0 ............................... $300,000 $300,000 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some of the 

costs of this AD may be covered under 

warranty, thereby reducing the cost 

impact on affected individuals. 

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 


jbell on DSKJLSW7X2PROD with RULES
30382 Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Rules and Regulations 

(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. 

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: 

2021–11–15 International Aero Engines 

AG: Amendment 39–21577; Docket No. 

FAA–2021–0129; Project Identifier AD– 

2020–01597–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective July 13, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to International Aero 

Engines AG (IAE) V2522–A5, V2524–A5, 

V2525–D5, V2527–A5, V2527E–A5, 

V2527M–A5, V2528–D5, V2530–A5, V2531– 

E5, and V2533–A5 model turbofan engines 

with an installed: 

(1) High-pressure turbine (HPT) 1st-stage 

disk, part number (P/N) 2A5001, with a serial 

number (S/N) listed in Appendix A, Table 1, 

of IAE Non-Modification Service Bulletin 

(NMSB) No. V2500–ENG–72–0713, Revision 

1, dated January 26, 2021 (IAE NMSB V2500– 

ENG–72–0713, Revision 1) or IAE NMSB No. 

V2500–E5–72–0015, dated December 15, 

2020 (IAE NMSB V2500–E5–72–0015); and/ 

or 

(2) HPT 2nd-stage disk, P/N 2A4802, with 

an S/N listed in Appendix A, Table 2, of IAE 

NMSB V2500–ENG–72–0713, Revision 1, or 

IAE NMSB V2500–E5–72–0015. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by an analysis 

performed by the manufacturer after an event 

involving an uncontained failure of a HPT 

1st-stage disk that resulted in high-energy 

debris penetrating the engine cowling. The 

FAA is issuing this AD to prevent failure of 

the HPT 1st-stage disk and HPT 2nd-stage 

disk. The unsafe condition, if not addressed, 

could result in uncontained HPT disk failure, 

damage to the engine, damage to the airplane, 

and loss of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) For IAE V2527E–A5, V2527M–A5, 

V2528–D5, V2530–A5, and V2533–A5 model 

turbofan engines with an HPT 1st-stage disk, 

P/N 2A5001, with an S/N listed in Appendix 

A, Table 1, of IAE NMSB V2500–ENG–72– 

0713, Revision 1, at the next engine shop 

visit after the effective date of this AD or 

before the HPT 1st-stage disk has 

accumulated 3,200 flight cycles (FCs) since 

the effective date of this AD, whichever 

occurs first, perform an ultrasonic inspection 

(USI) of the HPT 1st-stage disk using the 

Accomplishment Instructions, paragraph 6, 

of IAE NMSB V2500–ENG–72–0713, 

Revision 1. 

Note 1 to paragraph (g)(1): The USI 

required by paragraphs (g)(1) through (6) of 

this AD requires the HPT 1st-stage disk and 

HPT 2nd-stage disks to be removed from the 

engine allowing piece-part opportunity 

inspections. Per the Airworthiness 

Limitations Section of the manufacturer’s 

Instructions for Continued Airworthiness 

(ICAs), the additional inspections are not 

required unless the part has more than 100 

FCs since the last piece-part opportunity 

inspection, is damaged, or is the cause for the 

removal of the engine. Engine removal for the 

purposes of complying with this AD is not 

‘‘cause’’ for removal as stated in the ALS. 

(2) For IAE V2527E–A5, V2527M–A5, 

V2528–D5, V2530–A5, and V2533–A5 model 

turbofan engines with an HPT 2nd-stage disk, 

P/N 2A4802, with an S/N listed in Appendix 

A, Table 2, of IAE NMSB V2500–ENG–72– 

0713, Revision 1, at the next engine shop 

visit after the effective date of this AD or 

before the HPT 2nd-stage disk has 

accumulated 3,200 FCs since the effective 

date of this AD, whichever occurs first, 

perform a USI of the HPT 2nd-stage disk 

using the Accomplishment Instructions, 

paragraph 7, of IAE NMSB V2500–ENG–72– 

0713, Revision 1. 

(3) For IAE V2522–A5, V2524–A5, V2525– 

D5, and V2527–A5 model turbofan engines 

with an HPT 1st-stage disk, P/N 2A5001, 

with an S/N listed in Appendix A, Table 1, 

of IAE NMSB V2500–ENG–72–0713, 

Revision 1, at the next HPT rotor and stator 

assembly (HPT module) removal or before 

the HPT 1st-stage disk has accumulated 6,700 

FCs since the effective date of this AD, 

whichever occurs first, perform a USI of the 

HPT 1st-stage disk using the 

Accomplishment Instructions, paragraph 6, 

of IAE NMSB V2500–ENG–72–0713, 

Revision 1. 

(4) For IAE V2522–A5, V2524–A5, V2525– 

D5, and V2527–A5 model turbofan engines 

with an HPT 2nd-stage disk, P/N 2A4802, 

with an S/N listed in Appendix A, Table 2, 

of IAE NMSB V2500–ENG–72–0713, 

Revision 1, at the next HPT module removal 

or before the HPT 2nd-stage disk has 

accumulated 6,700 FCs since the effective 

date of this AD, whichever occurs first, 

perform a USI of the HPT 2nd-stage disk 

using the Accomplishment Instructions, 

paragraph 7, of IAE NMSB V2500–ENG–72– 

0713, Revision 1. 

(5) For IAE V2531–E5 model turbofan 

engines with an HPT 1st-stage disk, P/N 

2A5001, with an S/N listed in Appendix A, 

Table 1, of IAE NMSB V2500–E5–72–0015, at 

the next engine shop visit or before the HPT 

1st-stage disk has accumulated 3,200 FCs 

since the effective date of this AD, whichever 

occurs first, perform a USI of the HPT 1ststage disk using the Accomplishment 

Instructions, paragraph 6, of IAE NMSB 

V2500–E5–72–0015. 

(6) For IAE V2531–E5 model turbofan 

engines with an HPT 2nd-stage disk, P/N 

2A4802, with an S/N listed in Appendix A, 

Table 2, of IAE NMSB V2500–E5–72–0015, at 

the next engine shop visit or before the HPT 

2nd-stage disk has accumulated 3,200 FCs 

since the effective date of this AD, whichever 

occurs first, perform a USI of the HPT 2ndstage disk using the Accomplishment 

Instructions, paragraph 7, of IAE NMSB 

V2500–E5–72–0015. 

(7) If, during the USI required by 

paragraphs (g)(1) through (6) of this AD, a 

HPT 1st-stage disk or HPT 2nd-stage disk 

does not pass the inspection as specified in 

the Accomplishment Instructions, paragraph 

8., of IAE NMSB V2500–ENG–72–0713, 

Revision 1, or IAE NMSB V2500–E5–72– 

0015, as applicable, before further flight, 

remove the HPT 1st-stage disk or 2nd-stage 

disk, as applicable, from service and replace 

with a part eligible for installation. 

(h) Definition 

(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 

flanges, H–P, except for the following 

situations, which do not constitute an engine 

shop visit. 

(i) Separation of engine flanges solely for 

the purposes of transportation without 

subsequent engine maintenance. 

(ii) Engine removal for the purpose of 

performing field maintenance activities at a 

maintenance facility in lieu of performing 

them on-wing. 

(2) For the purpose for this AD, a ‘‘part 

eligible for installation’’ is: 

(i) An HPT 1st-stage disk or HPT 2nd-stage 

disk listed in Appendix A, Tables 1 and 2, 

of IAE NMSB V2500–ENG–72–0713, 

Revision 1, or Appendix A, Tables 1 and 2, 

of IAE NMSB V2500–E5–72–0015, that 

passed the USI required by paragraphs (g)(1) 

through (6) of this AD; or 

(ii) An HPT 1st-stage disk or HPT 2nd-stage 

disk that is not listed in Appendix A, Tables 

1 and 2, of IAE NMSB V2500–ENG–72–0713, 

Revision 1, or Appendix A, Tables 1 and 2, 

of IAE NMSB V2500–E5–72–0015. 

(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, 


jbell on DSKJLSW7X2PROD with RULES
Federal Register / Vol. 86, No. 108 / Tuesday, June 8, 2021 / Rules and Regulations 30383 

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. 

(j) 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) 

238–7742; fax: (781) 238–7199; email: 

nicholas.j.paine@faa.gov. 

(k) 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) International Aero Engines (IAE) NonModification Service Bulletin (NMSB) No. 

V2500–ENG–72–0713, Revision 1, dated 

January 26, 2021. 

(ii) IAE NMSB No. V2500–E5–72–0015, 

dated December 15, 2020. 

(3) For IAE service information identified 

in this AD, contact International Aero 

Engines AG, 400 Main Street, East Hartford, 

CT 06118; phone: (800) 565–0140; email: 

help24@pw.utc.com; website: http://

fleetcare.pw.utc.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 May 19, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–11960 Filed 6–7–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0098; Project 

Identifier MCAI–2020–01121–T; Amendment 

39–21564; AD 2021–11–02] 

RIN 2120–AA64 

Airworthiness Directives; MHI RJ 

Aviation ULC (Type Certificate 

Previously Held by Bombardier, Inc.) 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2019–22– 

07, which applied to all MHI RJ 

Aviation ULC Model CL–600–2B19 

(Regional Jet Series 100 & 440) 

airplanes, Model CL–600–2C10 

(Regional Jet Series 700, 701 & 702) 

airplanes, Model CL–600–2D15 

(Regional Jet Series 705) airplanes, 

Model CL–600–2D24 (Regional Jet 

Series 900) airplanes, and Model CL– 

600–2E25 (Regional Jet Series 1000) 

airplanes. AD 2019–22–07 required 

revising the existing airplane flight 

manual (AFM) to include a limitation 

and an abnormal operating procedure 

for the Automatic Flight Control System 

(AFCS). This AD requires revising the 

existing AFM and adding airplanes to 

the applicability. This AD was 

prompted by a finding that the 

limitation and abnormal operating 

procedure did not include reference to 

a certain mode. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

DATES: This AD is effective July 13, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of July 13, 2021. 

ADDRESSES: For Bombardier service 

information identified in this final rule, 

contact MHI RJ Aviation ULC, 12655 

Henri-Fabre Blvd., Mirabel, Que ́bec J7N 

1E1 Canada; Widebody Customer 

Response Center North America toll-free 

telephone +1–844–272–2720 or directdial telephone +1–514–855–8500; fax 

+1–514–855–8501; email thd.crj@

mhirj.com; internet https://mhirj.com. 

You may view this referenced service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, 

call 206–231–3195. It is also available 

on the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0098. 

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–2021– 

0098; 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: 

Steven Dzierzynski, Aerospace 

Engineer, Avionics and Electrical 

Systems Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7367; email 9-avs-nyaco-cos@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2018–32R1, dated August 21, 2020 (also 

referred to as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for all MHI RJ Aviation ULC Model CL– 

600–2B19 (Regional Jet Series 100 & 

440), CL–600–2C10 (Regional Jet Series 

700, 701 & 702), CL–600–2C11 (Regional 

Jet Series 550), CL–600–2D15 (Regional 

Jet Series 705), CL–600–2D24 (Regional 

Jet Series 900), and CL–600–2E25 

(Regional Jet Series 1000) airplanes. 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–2021– 

0098. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2019–22–07, 

Amendment 39–19786 (85 FR 439, 

January 6, 2020) (AD 2019–22–07). AD 

2019–22–07 applied to all MHI RJ 

Aviation ULC Model CL–600–2B19 

(Regional Jet Series 100 & 440) 

airplanes, Model CL–600–2C10 

(Regional Jet Series 700, 701 & 702) 

airplanes, Model CL–600–2D15 

(Regional Jet Series 705) airplanes, 

Model CL–600–2D24 (Regional Jet 

Series 900) airplanes, and Model CL– 

600–2E25 (Regional Jet Series 1000) 


jbell on DSKJLSW7X2PROD with RULES