Federal Register / Vol. 86, No. 171 / Wednesday, September 8, 2021 / Proposed Rules 50291 

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: 

Leonardo S.p.a.: Docket No. FAA–2021– 

0720; Project Identifier 2019–SW–079– 

AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 25, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Leonardo S.p.a. Model 

AW109SP helicopters, certificated in any 

category, with an affected part as identified 

in European Union Aviation Safety Agency 

(EASA) AD 2019–0213, dated August 29, 

2019 (EASA AD 2019–0213). 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Codes: 2913, Hydraulic Pump (Elect/Eng), 

Main. 

(e) Unsafe Condition 

This AD was prompted by reports of the 

ineligible installation of hydraulic pump part 

number (P/N) 109–0760–42–103 on Model 

AW109SP helicopters resulting in the 

applicable instructions for continued 

airworthiness not being available. The FAA 

is issuing this AD to address this unsafe 

condition. The unsafe condition, if not 

addressed, could result in failure of the 

hydraulic pump and subsequent loss of 

control of the helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, EASA AD 2019–0213. 

(h) Exceptions to EASA AD 2019–0213 

(1) Where EASA AD 2019–0213 requires 

compliance in terms of flight hours, this AD 

requires using hours time-in-service. 

(2) Where EASA AD 2019–0213 requires 

compliance from its effective date, this AD 

requires using the effective date of this AD. 

(3) Where paragraph (2) of EASA AD 2019– 

0213 specifies to replace a part if any 

discrepancy is detected during the 

inspection, this AD requires removing that 

part from service. 

(4) Where paragraph (3) of EASA AD 2019– 

0213 specifies to replace a part before 

exceeding 1,600 flight hours since first 

installation on a helicopter, this AD requires 

removing that part from service before 1600 

hours time in service since first installation 

on a helicopter. 

(5) Where the service information required 

by EASA AD 2019–0213 specifies discarding 

the o-ring and gasket, this AD requires 

removing those parts from service. 

(6) Where the service information required 

by EASA AD 2019–0213 specifies recording 

compliance with the service bulletin in the 

helicopter logbook, this AD does not include 

that requirement. 

(7) This AD does not require the 

‘‘Remarks’’ section of EASA AD 2019–0213. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2019–0213 specifies 

to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

(j) Special Flight Permit 

Special flight permits, as described in 14 

CFR 21.197 and 21.199, are prohibited. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (l)(2) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(l) Related Information 

(1) For EASA AD 2019–0213, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

000; email ADs@easa.europa.eu; internet 

www.easa.europa.eu. You may find this 

EASA AD on the EASA website at https://

ad.easa.europa.eu. You may view this 

material at the FAA, Office of the Regional 

Counsel, Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 76177. 

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–2021–0720. 

(2) For more information about this AD, 

contact Darren Gassetto, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 Stewart 

Ave., Suite 410, Westbury, NY 11590; 

telephone (516) 228–7323; email 

Darren.Gassetto@faa.gov. 

Issued on August 26, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–19254 Filed 9–7–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0725; Project 

Identifier MCAI–2020–01402–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 

supersede Airworthiness Directive (AD) 

2017–22–06, which applies to certain 

Bombardier, Inc., Model CL–600–2B16 

(601–3A, 601–3R, and 604 Variants) 

airplanes. AD 2017–22–06 requires 

repetitive inspections for fuel leakage at 

the engine and auxiliary power unit 

(APU) fuel pumps, and related 

investigative and corrective actions if 

necessary. Since the FAA issued AD 

2017–22–06, terminating actions have 

been developed and additional 

airplanes have been determined to be 

affected by the unsafe condition. This 

proposed AD would retain the 

requirements of AD 2017–22–06, and 

require an inspection of the APU, repair 

if necessary, and modification of the 

engine electrical fuel pump (EFP) 

installation. This proposed AD would 

also add airplanes to the applicability. 

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 October 25, 

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. 


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• 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 on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0725; 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: 

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; 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–2021–0725; Project Identifier 

MCAI–2020–01402–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 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 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; fax 

516–794–5531; email 9-avs-nyaco-cos@

faa.gov. 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 2017–22–06, 

Amendment 39–19086 (82 FR 49498, 

October 26, 2017) (AD 2017–22–06), for 

certain Bombardier, Inc., Model CL– 

600–2B16 (601–3A, 601–3R, and 604 

Variants) airplanes. AD 2017–22–06 

requires repetitive inspections for fuel 

leakage at the engine and APU fuel 

pumps, and related investigative and 

corrective actions if necessary. AD 

2017–22–06 resulted from reports of 

fuel leaks in the engine and APU EFP 

cartridge/canister electrical connectors 

and conduits. The FAA issued AD 

2017–22–06 to address fuel leaks in 

certain fuel pumps to remove a potential 

fuel ignition hazard. FAA AD 2017–22– 

06 corresponds to AD CF–2016–32R1, 

dated October 12, 2016, issued by 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada. 

Actions Since AD 2017–22–06 Was 

Issued 

The preamble to AD 2017–22–06 

explains that the FAA considered the 

requirements ‘‘interim action’’ and was 

considering further rulemaking. The 

FAA has now determined that further 

rulemaking is indeed necessary, and 

this proposed AD follows from that 

determination. 

Since the FAA issued AD 2017–22– 

06, a general visual inspection of the 

APU and a modification of the engine 

EFP installation have been developed to 

address the root cause of the fuel leaks 

and provide terminating action for the 

repetitive general visual inspections and 

rectifications of fuel leaks from the 

engine and APU EFP electrical wiring 

conduit outlets. In addition, it was 

determined that additional airplanes are 

affected by the unsafe condition. 

TCCA has issued TCCA AD CF–2016– 

32R4, dated October 13, 2020 (TCCA AD 

CF–2016–32R4); and TCCA AD CF– 

2020–38, dated October 13, 2020 (TCCA 

AD CF–2020–38); to correct an unsafe 

condition for certain Bombardier, Inc., 

Model CL–600–2B16 (601–3A, 601–3R, 

and 604 Variants) airplanes. This 

proposed AD refers to the TCCA ADs as 

the Mandatory Continuing 

Airworthiness Information, or the 

MCAI. 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– 

0725. 

This proposed AD was prompted by 

reports of fuel leaks from the electrical 

connectors and conduits of the engine 

and APU EFP cartridge/canister, and 

additional actions have been developed 

to address the root cause of the fuel 

leaks. The FAA is proposing this AD to 

address the potential for a fire hazard as 

a result of fuel leak from the APU EFP 

electrical conduit in the hot landing 

light compartment. See the TCCA ADs 

for additional background information. 

Related Service Information Under 1 

CFR Part 51 

Bombardier has issued the following 

service information, which describes 

procedures for repetitive general visual 

inspections and rectifications for any 

fuel leak from the engine and APU EFP 

electrical wiring conduit outlets. These 

documents are distinct since they apply 

to different airplane serial numbers. 

• Bombardier Service Bulletin 604– 

28–022, Revision 3, dated August 31, 

2018. 

• Bombardier Service Bulletin 605– 

28–010, Revision 3, dated August 31, 

2018. 

• Bombardier Service Bulletin 650– 

28–001, Revision 3, dated January 3, 

2019. 

Bombardier has also issued the 

following service information, which 

describes procedures for a detailed 

visual inspection of the APU for any 

damage or deformations (e.g., cut wires 

and a broken harness assembly of the 

fuel boost pump connector), modifying 


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the engine EFP installation, and repair 

if necessary. These documents are 

distinct since they apply to different 

airplane serial numbers. 

• Bombardier Service Bulletin 604– 

28–024, dated June 16, 2020. 

• Bombardier Service Bulletin 650– 

28–002, dated June 16, 2020. 

• Bombardier Service Bulletin 605– 

28–012, dated June 16, 2020. 

This proposed AD would also require 

Bombardier Service Bulletin 604–28– 

022, dated October 19, 2015, and 

Bombardier Service Bulletin 605–28– 

010, dated October 19, 2015, which the 

Director of the Federal Register 

approved for incorporation by reference 

as of November 30, 2017 (82 FR 49498, 

October 26, 2017). 

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 Requirements of This NPRM 

This proposed AD would retain all of 

the requirements of AD 2017–22–06 and 

require accomplishing the actions 

specified in the service information 

described previously, except as 

discussed under ‘‘Difference Between 

this Proposed AD and the MCAI. 

Difference Between This Proposed AD 

and the MCAI 

Paragraph E.1. of TCCA AD CF–2016– 

32R4, for airplane serial numbers 6125 

through 6163, requires inspecting for 

fuel leaks within 600 hours or 12 

months, whichever occurs first after 

‘‘the date of aeroplane entry in-service.’’ 

Paragraph (i) of this proposed AD, 

however, would require compliance for 

those airplanes within 600 flight hours 

or 12 months, whichever occurs first 

after ‘‘the effective date of this [FAA] 

AD.’’ Paragraph D.1. of TCCA AD CF– 

2016–32R4 requires compliance for this 

action for other serial numbers within 

600 flight hours or 12 months after the 

effective date of the AD. The FAA has 

determined that the risk is not higher for 

serial numbers 6125 through 6163 

compared with the other identified 

airplanes required to accomplish the 

same inspection. Therefore, for this AD, 

the compliance time is the same for all 

airplanes that are required to inspect for 

fuel leaks. 

Costs of Compliance 

The FAA estimates that this proposed 

AD affects 128 airplanes of U.S. registry. 

The FAA estimates the following 

costs to comply with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Action Labor cost Parts cost Cost per product Cost on U.S. operators 

Retained actions from AD 2017-22-06 

(for 121 airplanes).

1 work-hour × $85 per 

hour = $85.

$0 $85 per inspection cycle ... $10,285 per inspection 

cycle. 

New proposed actions ............................ 20 work-hours × $85 per 

hour = $1,700.

1,768 $3,468 ............................... $443,904. 

The FAA estimates the following 

costs to do any necessary repair that 

would be required based on the results 

of any required actions. The FAA has no 

way of determining the number of 

aircraft that might need this repair: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per 

product 

5 work-hours × $85 per hour = $425 ...................................................................................................................... $8,618 $9,043 

According to the manufacturer, some 

or all of the costs of this proposed AD 

may be covered under warranty, thereby 

reducing the cost impact on affected 

operators. The FAA does not control 

warranty coverage for affected operators. 

As a result, the FAA has included all 

known costs in the cost estimate. 

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 has 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. 


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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 

(AD) 2017–22–06, Amendment 39– 

19086 (82 FR 49498, October 26, 2017), 

and 

■ b. Adding the following new AD: 

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

0725; Project Identifier MCAI–2020– 

01402–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 25, 

2021. 

(b) Affected ADs 

This AD replaces AD 2017–22–06, 

Amendment 39–19086 (82 FR 49498, October 

26, 2017) (AD 2017–22–06). 

(c) Applicability 

This AD applies to Bombardier, Inc., 

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

604 Variants) airplanes, certificated in any 

category, serial numbers 5301 through 5665 

inclusive, 5701 through 5990 inclusive, and 

6050 through 6163 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 28, Fuel. 

(e) Reason 

This AD was prompted by reports of fuel 

leaks from the electrical connectors and 

conduits of the engine and auxiliary power 

unit (APU) electrical fuel pump (EFP) 

cartridge/canister, and additional actions 

have been developed to address the root 

cause of the fuel leaks. The FAA is issuing 

this AD to address the potential for a fire 

hazard as a result of fuel leak from the APU 

EFP electrical conduit in the hot landing 

light compartment. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Actions for Certain Airplanes, 

With Revised Service Information and 

Method of Compliance Provisions 

This paragraph restates the requirements of 

paragraph (g) of AD 2017–22–06, with 

revised service information and method of 

compliance provisions. For Model CL–600– 

2B16 airplanes having serial numbers 5301 

through 5665 inclusive: Within 600 flight 

hours or 12 months, whichever occurs first 

after November 30, 2017 (the effective date of 

AD 2017–22–06), do the inspections 

specified in paragraphs (g)(1) through (3) of 

this AD, and do all applicable corrective 

actions, in accordance with the 

Accomplishment Instructions of Bombardier 

Service Bulletin 604–28–022, dated October 

19, 2015, or Bombardier Service Bulletin 

604–28–022, Revision 3, dated August 31, 

2018. Do all applicable corrective actions 

before further flight. Repeat the inspections 

at intervals not to exceed 600 flight hours or 

12 months, whichever occurs first. As the 

effective date of this AD, use Bombardier 

Service Bulletin 604–28–022, Revision 3, 

dated August 31, 2018, only. 

(1) Do a general visual inspection for traces 

of fuel coming from the right-hand engine 

boost pump at the location of the belly fairing 

screw (FS412, BL 0.0). 

(2) Do a general visual inspection for traces 

of fuel coming from the left-hand engine 

boost pump at the location of the belly fairing 

screw (FS412, BL 0.0). 

(3) Do a general visual inspection for traces 

of fuel coming from the EFP electrical wiring 

conduit outlet at the lower body fairing area 

for engine EFPs and at the right-hand landing 

light compartment for the APU EFP. 

(h) Retained Actions for Certain Other 

Airplanes, With Revised Service Information 

and Compliance Method Provisions 

This paragraph restates the requirements of 

paragraph (h) of AD 2017–22–06, with 

revised service information and compliance 

method provisions. For Model CL–600–2B16 

airplanes having serial numbers 5701 

through 5955 inclusive, 5957, 5960 through 

5966 inclusive, 5968 through 5971 inclusive, 

and 5981: Within 600 flight hours or 12 

months, whichever occurs first after 

November 30, 2017 (the effective date of AD 

2017–22–06), do the inspections specified in 

paragraphs (h)(1) through (3) of this AD, and 

do all applicable related investigative and 

corrective actions, in accordance with the 

Accomplishment Instructions in Bombardier 

Service Bulletin 605–28–010, dated October 

19, 2015, or Bombardier Service Bulletin 

605–28–010, Revision 3, dated August 31, 

2018. Do all applicable related investigative 

and corrective actions before further flight. 

Repeat the inspections at intervals not to 

exceed 600 flight hours or 12 months, 

whichever occurs first. As of the effective 

date of this AD, use Bombardier Service 

Bulletin 605–28–010, Revision 3, dated 

August 31, 2018, only. 

(1) Do a general visual inspection for traces 

of fuel coming from the right-hand engine 

boost pump at the location of the belly fairing 

screw (FS412, BL 0.0). 

(2) Do a general visual inspection for traces 

of fuel coming from the left-hand engine 

boost pump at the location of the belly fairing 

screw (FS412, BL 0.0). 

(3) Do a general visual inspection of the 

right-hand landing light compartment for 

traces of fuel coming from the APU EFP. 

(i) New Requirements of This AD: 

Inspections and Rectifications 

For the airplanes identified in figure 1 to 

paragraph (i) of this AD: At the applicable 

compliance time specified in figure 1 to 

paragraph (i) of this AD, do a general visual 

inspection for any fuel leak from the engine 

and APU EFP electrical wiring conduit 

outlets, in accordance with the 

Accomplishment Instructions of the 

applicable service information specified in 

figure 1 to paragraph (i) of this AD. If any fuel 

leak is found during the general visual 

inspection, before further flight, correct the 

fuel leak in accordance with the 

Accomplishment Instructions of the 

applicable service information specified in 

figure 1 to paragraph (i) of this AD. 

Thereafter, repeat the general visual 

inspection at intervals not to exceed 600 

flight hours or 12 months, whichever occurs 

first. 

FIGURE 1 TO PARAGRAPH (i)—COMPLIANCE TIMES AND SERVICE INFORMATION

Serial Nos.— Compliance time— Bombardier service bulletin— 

5956, 5958, 5959, 5967, 5972 through 5980 

inclusive, and 5982 through 5990 inclusive.

Within 600 flight hours or 12 months, whichever occurs first after the effective date of 

this AD.

Bombardier Service Bulletin 605–28–010, Revision 3, dated August 31, 2018. 

6050 through 6163 inclusive ............................. Within 600 flight hours or 12 months, whichever occurs first after the effective date of 

this AD.

Bombardier Service Bulletin 650–28–001, Revision 3, dated January 3, 2019. 

(j) New Requirements of This AD: Inspection 

and Modification 

Within 60 months after the effective date 

of this AD: Do a detailed visual inspection of 

the APU for any damage or deformations, and 

modify the engine EFP installation, in 

accordance with the Accomplishment 

Instructions of the applicable service 

information specified in figure 2 to paragraph 

(j) of this AD. If any damage or deformations 

are found during the detailed visual 

inspection, before further flight, do the repair 


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in accordance with the Accomplishment 

Instructions of the applicable service 

information specified in figure 2 to paragraph 

(j) of this AD. 

FIGURE 2 TO PARAGRAPH (j)—SERVICE INFORMATION

Serial Nos.— Bombardier service bulletin— 

5301 through 5665 inclusive .................................................................... Bombardier Service Bulletin 604–28–024, dated June 16, 2020. 

5701 through 5990 inclusive .................................................................... Bombardier Service Bulletin 605–28–012, dated June 16, 2020. 

6050 through 6163 inclusive .................................................................... Bombardier Service Bulletin 650–28–002, dated June 16, 2020. 

(k) No Reporting Requirement 

Where service information identified in 

this AD specifies to submit certain 

information to the manufacturer, this AD 

does not include that requirement. 

(l) Terminating Actions 

Accomplishing the actions required by 

paragraph (j) of this AD terminates all 

requirements of this AD. 

(m) Credit for Previous Actions 

(1) This paragraph provides credit for 

actions required by paragraph (g) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 604–28–022, dated October 

19, 2015, provided that within 4 months or 

150 flight hours from the effective date of this 

AD or within 1 year from the last inspection, 

whichever occurs first, the actions 

accomplished in paragraph (g) are done using 

Bombardier Service Bulletin 604–28–022, 

Revision 3, dated August 31, 2018. 

(2) This paragraph provides credit for 

actions required by paragraph (h) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 605–28–010, dated October 

19, 2015, provided that within 4 months or 

150 flight hours from the effective date of this 

AD or within 1 year from the last inspection, 

whichever occurs first, the actions 

accomplished in paragraph (h) of this AD are 

done using Bombardier Service Bulletin 605– 

28–010, Revision 3, dated August 31, 2018. 

(3) This paragraph provides credit for 

actions required by paragraph (i) of this AD, 

if those actions were performed before the 

effective date of this AD using the service 

information in paragraphs (l)(3)(i) through 

(iii) of this AD, provided that within 1 year 

from the last inspection, the actions 

accomplished in paragraph (i) of this AD are 

done using Bombardier Service Bulletin 650– 

28–001, Revision 3, dated January 3, 2019. 

This service information is not incorporated 

by reference in this AD. 

(i) Bombardier Service Bulletin 650–28– 

001, dated November 3, 2017. 

(ii) Bombardier Service Bulletin 650–28– 

001, Revision 1, dated May 14, 2018. 

(iii) Bombardier Service Bulletin 650–28– 

001, Revision 2, dated August 31, 2018. 

(n) Other FAA AD Provisions 

(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. 

(o) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2016–32R4, dated October 13, 2020; and 

TCCA AD CF–2020–38, dated October 13, 

2020; for related information. This MCAI 

may be found in the AD docket on the 

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

searching for and locating Docket No. FAA– 

2021–0725. 

(2) For more information about this AD, 

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; fax 516– 

794–5531; email 9-avs-nyaco-cos@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 1, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–19237 Filed 9–7–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF THE TREASURY 

Internal Revenue Service 

26 CFR Parts 1, 53, 54 and 301 

[REG–102951–16] 

RIN 1545–BN36 

Electronic-Filing Requirements for 

Specified Returns and Other 

Documents; Hearing 

AGENCY: Internal Revenue Service (IRS), 

Treasury. 

ACTION: Proposed rule; notice of hearing. 

SUMMARY: This document provides a 

notice of public hearing on proposed 

regulations amending the rules for filing 

electronically and affects persons 

required to file partnership returns, 

corporate income tax returns, unrelated 

business income tax returns, 

withholding tax returns, and certain 

information returns, registration 

statements, disclosure statements, 

notifications, actuarial reports, and 

certain excise tax returns. 

DATES: The public hearing is being held 

on Wednesday, September 22, 2021 at 

10:00 a.m. EDT. The IRS must receive 

speakers’ outlines of the topics to be 

discussed at the public hearing by 

Tuesday, September 21, 2021. 

ADDRESSES: The public hearing is being 

held by teleconference. Individuals who 

want to testify (by telephone) at the 

public hearing must send an email to 

publichearings@irs.gov to receive the 

telephone number and access code for 

the hearing. The subject line of the 

email must contain the regulation 

number [REG–102951–16] and the word 

TESTIFY. For example, the subject line 

may say: Request to TESTIFY at Hearing 

for REG–102951–16. The email must 

include the name(s) of the speaker(s) 

and title(s). No outlines will be accepted 

by email. Send all outline submissions 

electronically via the Federal 

eRulemaking Portal at 

www.regulations.gov (IRS REG–102951– 

16). Both the email requesting to testify 

and the outline submissions must be 

received by September 21, 2021. 

FOR FURTHER INFORMATION CONTACT: 

Concerning these proposed regulations, 


jbell on DSKJLSW7X2PROD with PROPOSALS