This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

51279 

Vol. 86, No. 176 

Wednesday, September 15, 2021 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0787; Project 

Identifier MCAI–2021–00252–T] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Bombardier, Inc., Model CL– 

600–1A11 (600), CL–600–2A12 (601), 

and CL–600–2B16 (601–3A, 601–3R, 

and 604 Variants) airplanes. This 

proposed AD was prompted by a report 

of a wing stall (wing drop/uncommanded roll) during a landing flare. 

This proposed AD would require 

revising the existing airplane flight 

manual (AFM) to incorporate a 

limitation and procedure for the wing 

anti-ice (WAI) system in order to 

mitigate the risk of ice accumulation on 

the wing leading edges. 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 November 1, 

2021. 

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 service information identified in 

this NPRM, contact Bombardier, Inc., 

200 Coˆte-Vertu Road West, Dorval, 

Que ́bec H4S 2A3, Canada; North 

America toll-free telephone 1–866–538– 

1247 or direct-dial telephone 1–514– 

855–2999; email ac.yul@

aero.bombardier.com; internet https://

www.bombardier.com. You may view 

this 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. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0787; 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, any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Chirayu Gupta, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531; email 

9-avs-nyaco-cos@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–2021–0787; Project Identifier 

MCAI–2021–00252–T’’ 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 the 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 received about this NPRM. 

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 Chirayu Gupta, 

Aerospace Engineer, Mechanical 

Systems and Administrative Services 

Section, FAA, New York ACO Branch, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7300; fax 516–794–5531; email 9- 

avs-nyaco-cos@faa.gov. Any 

commentary that the FAA receives that 

is not specifically designated as CBI will 

be placed in the public docket for this 

rulemaking. 

Background 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2021–06, dated February 26, 2021 

(TCCA AD CF–2021–06) (also referred 

to after this as the Mandatory 

Continuing Airworthiness Information, 

or the MCAI), to correct an unsafe 

condition for certain Bombardier, Inc., 

Model CL–600–1A11 (600), CL–600– 

2A12 (601), and CL–600–2B16 (601–3A, 

601–3R, and 604 Variants) airplanes. 

You may examine the MCAI in the AD 

docket at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0787. 

This proposed AD was prompted by 

a report of a wing stall (wing drop/uncommanded roll) during a landing flare. 

Photographs after landing showed that 

the airplane had mixed ice on the 

leading edges of the wings; therefore, it 

was determined that during descent the 


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51280 Federal Register / Vol. 86, No. 176 / Wednesday, September 15, 2021 / Proposed Rules 

WAI system had been OFF because the 

ice detector did not detect ice. Postincident functional checks of the ice 

detectors revealed no faults with the ice 

detector units onboard the aircraft. After 

the investigation, it was revealed that 

the flightcrew had followed the AFM 

procedures, which did not require the 

WAI system to be selected ON. The FAA 

is proposing this AD to address ice 

accumulation on the wing leading 

edges, which could result in a wing stall 

during landing and consequent reduced 

controllability of the airplane. See the 

MCAI for additional background 

information. 

Related Service Information Under 1 

CFR Part 51 

Bombardier has issued the following 

service information, which specifies a 

revised AFM limitation and procedure 

for the WAI system in order to mitigate 

the risk of ice accumulation on the wing 

leading edge. These documents are 

distinct since they apply to different 

airplane configurations. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATION LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

C., Icing Conditions During Flight, of 

Chapter 3., SYSTEMS OPERATIONS— 

ANTI-ICE, and sub-section I., Before 

Landing, of Chapter 42., 

CONSOLIDATED CHECK LIST, of 

NORMAL PROCEDURES section; of 

Canadair Challenger CL–600–1A11 

AFM, Product Publication 600, Revision 

114, dated April 16, 2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 4., 

OPERATION LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

C., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, and sub-section I., Before 

Landing, of Chapter 23., 

CONSOLIDATED CHECK LIST, of the 

NORMAL PROCEDURES section; of 

Canadair Challenger CL–600–1A11 

AFM, Product Support Publication 

(PSP) 600–1, Revision 106, dated April 

16, 2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2A12 AFM, PSP 

601–1A, Revision 123, dated April 16, 

2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2A12 AFM, PSP 

601–1A–1, Revision 82, dated April 16, 

2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2A12 AFM, PSP 

601–1B, Revision 86, dated April 16, 

2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2A12 AFM, PSP 

601–1B–1, Revision 84, dated April 16, 

2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2B16 AFM, PSP 

601A–1, Revision 106, dated April 16, 

2020. 

• Sub-sub section (2), Wing Anti-ice 

System, of sub-section I., Operation in 

Icing Conditions, of Chapter 3., 

OPERATING LIMITATIONS, of the 

LIMITATIONS section; and sub-section 

E., Icing Conditions During Flight, of 

Chapter 4., SYSTEMS OPERATIONS— 

ANTI-ICE, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL–600–2B16 AFM, PSP 

601A–1–1, Revision 95, dated April 16, 

2020. 

• Sub-sub section B., Wing Anti-ice 

System, of sub-section 4., Operation in 

Icing Conditions, of Section 02–04, 

Operating Limitations, of Chapter 2— 

LIMITATIONS; and sub-section M., 

Icing Conditions During Flight, of 

Section 04–14, Ice and Rain Protection, 

of Chapter 4—NORMAL PROCEDURES; 

of Bombardier Challenger 604 CL–600– 

2B16 AFM, PSP 604–1, Revision 116, 

dated December 18, 2019. 

• Sub-sub section B., Wing Anti-ice 

System, of sub-section 4., Operation in 

Icing Conditions, of Section 02–04, 

Operating Limitations, of Chapter 2— 

LIMITATIONS; and sub-section M., 

Icing Conditions During Flight, of 

Section 04–14, Ice and Rain Protection, 

of Chapter 4—NORMAL PROCEDURES; 

of Bombardier Challenger 605 CL–600– 

2B16 AFM, PSP 605–1, Revision 54, 

dated December 18, 2019. 

• Sub-sub section B., Wing Anti-ice 

System, of sub-section 4., Operation in 

Icing Conditions, of Section 02–04, 

Operating Limitations, of Chapter 2— 

LIMITATIONS; and sub-section M., 

Icing Conditions During Flight, of 

Section 04–14, Ice and Rain Protection, 

of Chapter 4—NORMAL PROCEDURES; 

of Bombardier Challenger 650 CL–600– 

2B16 AFM, PSP 650–1, Revision 19, 

dated December 18, 2019. 

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 the ADDRESSES section. 

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 MCAI and service 

information referenced above. The FAA 

is proposing this AD because the FAA 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

revising the existing AFM to incorporate 

the limitations and procedures for the 

WAI system described previously, in 

order to mitigate the risk of ice 

accumulation on the wing leading 

edges, except as discussed under 

‘‘Differences Between this Proposed AD 

and the MCAI.’’ 

Differences Between This Proposed AD 

and the MCAI 

This NPRM updates certain AFM 

revision levels identified in TCCA AD 

CF–2021–06, and therefore identifies 

the complete, most recent service 

information that will be incorporated by 

reference in the final rule. 


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Federal Register / Vol. 86, No. 176 / Wednesday, September 15, 2021 / Proposed Rules 51281 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 619 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

1 work-hour × $85 per hour = $85 .............................................................................................. $0 $85 $52,615 

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 

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 adding 

the following new airworthiness 

directive: 

Bombardier, Inc.: Docket No. FAA–2021– 

0787; Project Identifier MCAI–2021– 

00252–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by November 1, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

airplanes, certificated in any category, as 

identified in paragraphs (c)(1) through (3) of 

this AD. 

(1) Model CL–600–1A11 (600) airplanes 

having serial numbers (S/Ns) 1001 through 

1085 inclusive. 

(2) Model CL–600–2A12 (601) airplanes 

having S/Ns 3001 through 3066 inclusive. 

(3) Model CL–600–2B16 (601–3A, 601–3R, 

and 604 Variants) airplanes having S/Ns 5001 

through 5194 inclusive; 5301 through 5665 

inclusive; 5701 through 5988 inclusive; and 

6050 through 6153 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 30, Ice and Rain Protection. 

(e) Unsafe Condition 

This AD was prompted by a report of a 

wing stall during a landing flare. Photographs 

after landing showed that the airplane had 

mixed ice on the leading edges of the wings; 

therefore, it was determined that during 

descent the wing anti-ice (WAI) system had 

been OFF because the ice detector did not 

detect ice. The FAA is issuing this AD to 

address ice accumulation on the wing 

leading edges, which could result in a wing 

stall during landing and consequent reduced 

controllability of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Airplane Flight Manual (AFM) Revision 

Within 60 days after the effective date of 

this AD: Revise the existing AFM to 

incorporate the specified sections of the 

Bombardier or Canadair Challenger AFM 

revision limitations and procedures for the 

WAI system specified in figure 1 to 

paragraph (g) of this AD. 

BILLING CODE 4910–13–P 


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Figure 1 to paragraph (g) -AFM Revisions 

Bombardier 

Airplane AFMTitle AFM Revision Model/Serial 

Number 

Sub-sub section (2), Wing Anti-ice System, of 

sub-section I., Operation in Icing Conditions, 

of Chapter 3., OPERATION LIMITATIONS, 

CL-600-lAl 1 of the LIMITATIONS section; and sub-

(Variant600), 1001 section C., Icing Conditions During Flight, of Revision 114, 

through 1085 Chapter 3., SYSTEMS OPERATIONS - dated April 16, 

inclusive for ANTI-ICE, and sub-section I., Before 2020 

non-winglets Landing, of Chapter 42., CONSOLIDATED 

CHECK LIST, of NORMAL PROCEDURES 

section; of Canadair Challenger CL-600-1 Al 1 

AFM, Product Publication 600 

Sub-sub section (2), Wing Anti-ice System, of 

sub-section I., Operation in Icing Conditions, 

of Chapter 4., OPERATION LIMITATIONS, 

CL-600-lAll of the LIMITATIONS section; and sub-

(Variant600), 1001 section C., Icing Conditions During Flight, of Revision 106, 

through 1085 Chapter4., SYSTEMS OPERATIONS- dated April 16, 

inclusive for ANTI-ICE, and sub-section I., Before 2020 

winglets Landing, of Chapter 23., CONSOLIDATED 

CHECKLIST, of the NORMAL 

PROCEDURES section; of Canadair 

Challenger CL-600-lAll AFM, Product 

Support Publication (PSP) 600-1 

Sub-sub section (2), Wing Anti-ice System, of 

CL-600-2Al2 sub-section I., Operation in Icing Conditions, 

(Variant 601), 3001 of Chapter 3., OPERATING LIMITATIONS, 

through 3066, and of the LIMITATIONS section; and sub- Revision 123, 

43,100 lb. maximum section E., Icing Conditions During Flight, of dated April 16, 

take-off weight Chapter 4., SYSTEMS OPERATIONS - 2020 

ANTI-ICE, of the NORMAL PROCEDURES (MTOW) section; of Canadair Challenger CL-600-2Al2 

AFM, PSP 601-lA 

Sub-sub section (2), Wing Anti-ice System, of 

sub-section I., Operation in Icing Conditions, 

CL-600-2Al2 of Chapter 3., OPERATING LIMITATIONS, 

(Variant 601), 3001 of the LIMITATIONS section; and sub- Revision 82, 

through 3066, and section E., Icing Conditions During Flight, of dated April 16, 

44,600 lb./45,100 lb. Chapter 4., SYSTEMS OPERATIONS - 2020 

MTOW ANTI-ICE, of the NORMAL PROCEDURES 

section; of Canadair Challenger CL-600-2Al2 

AFM, PSP 601-IA-l 
Federal Register / Vol. 86, No. 176 / Wednesday, September 15, 2021 / Proposed Rules 51283 


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Bombardier 

Airplane AFM Title AFM Revision Model/Serial 

Number 

Sub-sub section (2), Wing Anti-ice System, of 

sub-section I., Operation in Icing Conditions, 

CL-600-2Al2 of Chapter 3., OPERATING LIMlTATIONS, 

(Variant 601), 3001 of the LIMITATIONS section; and sub- Revision 86, 

through 3066 with - section E., Icing Conditions During Flight, of dated April 16, 

3A engine, and Chapter 4., SYSTEMS OPERA TTONS - 2020 

43,100 lb. MTOW ANTI-ICE, of the NORMAL PROCEDURES 

section; of Canadair Challenger CL-600-2A12 

AFM, PSP 601-lB 

Sub-sub section (2), Wing Anti-ice System, of 

CL-600-2Al2 sub-section I., Operation in Icing Conditions, 

(Variant 601), 3001 of Chapter 3., OPERATING LIMITATIONS, 

through 3066 of the LIMITATIONS section; and sub- Revision 84, 

with -3A engine, section E., Icing Conditions During Flight, of dated April 16, 

and44,600 Chapter 4., SYSTEMS OPERATIONS - 2020 

lb./45, 100 lb. ANTI-ICE, of the NORMAL PROCEDURES 

MTOW section; of Canadair Challenger CL-600-2A12 

AFM, PSP 601-lB-1 

Sub-sub section (2), Wing Anti-ice System, of 

sub-section I., Operation in Icing Conditions, 

CL-600-2B16 of Chapter 3., OPERATING LIMITATIONS, 

(Variant 601-3A/3R of the LIMITATIONS section; and sub- Revision 106, 

) 5001 through 5134 section E., Icing Conditions During Flight, of dated April 16, 

inclusive, and Chapter 4., SYSTEMS OPERATIONS - 2020 

43,100 lb. MTOW ANTI-ICE, of the NORMAL PROCEDURES 

section; of Canadair Challenger CL-600-2B16 

AFM, PSP 601A-1 

Sub-sub section (2), Wing Anti-ice System, of 

CL-600-2B16 sub-section I., Operation in Icing Conditions, 

(Variant 601- of Chapter 3., OPERATING LIMITATIONS, 

3A/3R) 5001 of the LIMITATIONS section; and sub- Revision 95, 

through 5194 section E., Icing Conditions During Flight, of dated April 16, 

inclusive, and Chapter 4., SYSTEMS OPERATIONS - 2020 

44,600 lb./45,100 lb. ANTI-ICE, of the NORMAL PROCEDURES 

MTOW section; of Canadair Challenger CL-600-2B 16 

AFM, PSP 601A-l-1 

Sub-sub section B., Wing Anti-ice System, of 

sub-section 4., Operation in Icing Conditions, 

CL-600-2B 16 of Section 02-04, Operating Limitations, of Revision 116, 

(Variant 604) 5301 Chapter 2 - LIMITATIONS; and sub-section dated M, Icing Conditions During Flight, of Section through 5665 04-14, Ice and Rain Protection, of Chapter 4 - December 18, 

inclusive NORMAL PROCEDURES; ofBombardier 2019 

Challenger 604 CL-600-2B 16 AFM, PSP 

604-1 
51284 Federal Register / Vol. 86, No. 176 / Wednesday, September 15, 2021 / Proposed Rules 

(h) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, New York ACO 

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 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to ATTN: Program Manager, 

Continuing Operational Safety, FAA, New 

York ACO Branch, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

516–228–7300; fax 516–794–5531. Before 

using any approved AMOC, notify your 

appropriate principal inspector, or lacking a 

principal inspector, the manager of the 

responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, New York ACO Branch, 

FAA; or Transport Canada Civil Aviation 

(TCCA); or Bombardier, Inc.’s TCCA Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(i) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2021–06, dated February 26, 2021, for 

related information. This MCAI may be 

found in the AD docket at https://

www.regulations.gov by searching for and 

locating Docket No. FAA–2021–0787. 

(2) For more information about this AD, 

contact Chirayu Gupta, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516–228– 

7300; fax 516–794–5531; email 9-avs-nyacocos@faa.gov. 

(3) For service information identified in 

this AD, contact Bombardier, Inc., 200 CoˆteVertu Road West, Dorval, Que ́bec H4S 2A3, 

Canada; North America toll-free telephone 1– 

866–538–1247 or direct-dial telephone 1– 

514–855–2999; email ac.yul@

aero.bombardier.com; internet https://

www.bombardier.com. You may view this 

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. 

Issued on September 9, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–19814 Filed 9–14–21; 8:45 am] 

BILLING CODE 4910–13–C 

DEPARTMENT OF LABOR 

Employee Benefits Security 

Administration 

29 CFR Part 2520 

RIN 1210–AB97 

Annual Reporting and Disclosure 

AGENCY: Employee Benefits Security 

Administration, Labor. 

ACTION: Proposed rule. 

SUMMARY: This document contains 

proposed amendments to Department of 

Labor (DOL) regulations relating to 

annual reporting requirements under 

Title I of the Employee Retirement 

Income Security Act of 1974, as 

amended (ERISA). The proposed 

amendments contained in this 

document would conform these DOL 

reporting regulations to proposed 

revisions under Title I of ERISA and the 

Internal Revenue Code (Code) to the 

Form 5500 Annual Return/Report of 

Employee Benefit Plan and Form 5500– 

SF Short Form Annual Return/Report of 

Small Employee Benefit Plan being 

published in this issue of the Federal 

Register in a separate Notice of 

Proposed Forms Revisions (NPFR) 

prepared jointly by DOL, the Internal 

Revenue Service (IRS), and the Pension 


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Bombardier 

Airplane AFMTitle AFM Revision Model/Serial 

Number 

Sub-sub section B., Wing Anti-ice System, of 

sub-section 4., Operation in Icing Conditions, 

CL-600-2B 16 of Section 02-04, Operating Limitations, ~f Revision 54, Chapter 2 -LIMITATIONS; and sub-sectl~n (Variant 604) 5701 dated M., Icing Conditions During Flight, of Sect10n through 5988 December 18, 04-14 Ice and Rain Protection, of Chapter 4 - inclusive 2019 NORMAL PROCEDURES; of Bombardier 

Challenger 605 CL-600-2B 16 AFM, PSP 

605-1 

Sub-sub section B., Wing Anti-ice System, of 

sub-section 4., Operation in Icing Conditions, 

CL-600-2B 16 of Section 02-04, Operating Limitations, ~f Revision 19, Chapter 2 - LIMITATIONS; ~d sub-sectl~n (Variant 604) 6050 dated M., Icing Conditions During Fhght, of Sect10n through 6153 December 18, 04-14 Ice and Rain Protection, of Chapter 4 - inclusive 2019 NORMAL PROCEDURES; of Bombardier 

Challenger 650 CL-600-2B16 AFM, PSP 

650-1