3184 Federal Register / Vol. 87, No. 14 / Friday, January 21, 2022 / Rules and Regulations 

(c) Applicability 

This AD applies to General Electric 

Company (GE) CF6–80C2A1, CF6–80C2A2, 

CF6–80C2A3, CF6–80C2A5, CF6–80C2A5F, 

and CF6–80C2A8 model turbofan engines 

with an installed left-hand rear mount link 

assembly, part number (P/N) 1846M23G01. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7120, Engine Mount Section. 

(e) Unsafe Condition 

This AD was prompted by a report from 

the manufacturer on an updated analysis of 

stress loads during take-off, which revealed 

a stress increase with take-off phase loads 

that were not included at certification. The 

FAA is issuing this AD to lower the life limit 

of the left-hand rear mount link assembly and 

prevent the failure of the engine mount 

system. The unsafe condition, if not 

addressed, could result in separation of the 

engine from the airplane and loss of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 180 days after the effective date of 

this AD, revise the airworthiness limitations 

section of the existing engine maintenance 

manual, and the operator’s existing approved 

continuous airworthiness maintenance 

program, by reducing the life limit of the lefthand rear mount link assembly, P/N 

1846M23G01, from 50,000 flight cycles (FCs) 

to 23,800 FCs. 

(h) 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 ECO Branch, send it to 

the attention of the person identified in 

paragraph (i) of this AD. 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. 

(i) Related Information 

For more information about this AD, 

contact Scott Stevenson, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

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

238–7132; fax: (781) 238–7199; email: 

Scott.M.Stevenson@faa.gov. 

(j) Material Incorporated by Reference 

None. 

Issued on January 14, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–01141 Filed 1–20–22; 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; Amendment 

39–21882; AD 2021–26–23] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2017–22– 

06, which applied to certain 

Bombardier, Inc., Model CL–600–2B16 

(601–3A, 601–3R, and 604 Variants) 

airplanes. AD 2017–22–06 required 

repetitive inspections for fuel leakage at 

the engine and auxiliary power unit 

(APU) fuel pumps, and related 

investigative and corrective actions if 

necessary. This AD retains the 

requirements of AD 2017–22–06, and 

requires an inspection of the APU, 

repair if necessary, and modification of 

the engine electrical fuel pump (EFP) 

installation. This AD also adds airplanes 

to the applicability. This AD was 

prompted by reports of fuel leaks from 

the electrical connectors and conduits of 

the engine and APU EFP cartridge/ 

canister, and the development of 

additional actions to address the root 

cause of the fuel leaks. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective February 25, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of February 25, 2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain other publications listed in 

this AD as of November 30, 2017 (82 FR 

49498, October 26, 2017). 

ADDRESSES: For service information 

identified in this final rule, contact 

Bombardier Business Aircraft Customer 

Response Center, 400 Coˆte-Vertu Road 

West, Dorval, Que ́bec H4S 1Y9, Canada; 

telephone 514–855–2999; email ac.yul@

aero.bombardier.com; internet https://

www.bombardier.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–2021–0725. 

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 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; fax 516–794–5531; email 

9-avs-nyaco-cos@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, 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); (also referred 

to as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for certain Bombardier, Inc., Model CL– 

600–2B16 (601–3A, 601–3R, and 604 

Variants) 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–2021–0725. 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2017–22–06, 

Amendment 39–19086 (82 FR 49498, 

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

2017–22–06 applied to certain 

Bombardier, Inc., Model CL–600–2B16 

(601–3A, 601–3R, and 604 Variants) 

airplanes. The NPRM published in the 

Federal Register on September 8, 2021 

(86 FR 50291). The NPRM was 


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prompted by reports of fuel leaks from 

the electrical connectors and conduits of 

the engine APU EFP cartridge/canister, 

and the development of additional 

actions to address the root cause of the 

fuel leaks. The NPRM proposed to retain 

the requirements of AD 2017–22–06, 

and proposed to require an inspection of 

the APU, repair if necessary, and 

modification of the engine EFP 

installation. The NPRM also proposed to 

add airplanes to the applicability. 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. See the MCAI for 

additional background information. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this final rule. The following presents 

the comment received on the NPRM and 

the FAA’s response to the comment. 

Request To Use the Latest Service 

Information 

An anonymous commenter requested 

that the FAA revise the NPRM to allow 

the use of the latest service bulletin. The 

commenter stated that the NPRM 

specifies the use of Bombardier Service 

Bulletin 604–28–024, dated June 16, 

2020, for the actions specified in the 

NPRM, and that the service bulletin has 

since been revised to Bombardier 

Service Bulletin 604–28–024, Revision 

1, dated May 28, 2021. 

The FAA agrees with the commenter 

for the reasons provided above. 

Bombardier Service Bulletin 604–28– 

024, Revision 01, dated May 28, 2021, 

adds a figure to clarify the location of a 

certain drain hole. The service bulletin 

revision does not add work or affect the 

technical content of this AD. The FAA 

has revised the ‘‘Related Service 

Information under 1 CFR part 51’’ 

paragraph and figure 2 to paragraph (j) 

of this AD accordingly. The FAA also 

has also added paragraph (m)(4) of this 

AD to allow credit for actions required 

by paragraph (j) of this AD if those 

actions were performed before the 

effective date of this AD using 

Bombardier Service Bulletin 604–28– 

024, dated June 16, 2020. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comment received, and 

determined that air safety and the 

public interest require adopting this 

final rule with the change described 

previously and minor editorial changes. 

The FAA has determined that these 

minor changes: 

• Are consistent with the intent that 

was proposed in the NPRM for 

addressing the unsafe condition; and 

• Do not add any additional burden 

upon the public than was already 

proposed in the NPRM. 

The FAA also determined that these 

changes will not increase the economic 

burden on any operator or increase the 

scope of this final rule. 

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 

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, Revision 01, dated May 28, 

2021. 

• Bombardier Service Bulletin 605– 

28–012, dated June 16, 2020. 

• Bombardier Service Bulletin 650– 

28–002, dated June 16, 2020. 

This AD also requires 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. 

Costs of Compliance 

The FAA estimates that this AD 

affects 128 airplanes of U.S. registry. 

The FAA estimates the following 

costs to comply with this 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 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 


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According to the manufacturer, some 

or all of the costs of this 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 determined that 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 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

(AD) 2017–22–06, Amendment 39– 

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

and 

■ b. Adding the following new AD: 

2021–21–23 Bombardier, Inc.: Amendment 

39–21882; Docket No. FAA–2021–0725; 

Project Identifier MCAI–2020–01402–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective February 25, 2022. 

(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 the development of 

additional actions 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 


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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. 

BILLING CODE 4910–13–P 

(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 

in accordance with the Accomplishment 

Instructions of the applicable service 

information specified in figure 2 to paragraph 

(j) of this AD. 

BILLING CODE 4910–13–C 

(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 specified 

in paragraph (g) are done using Bombardier 

Service Bulletin 604–28–022, Revision 3, 

dated August 31, 2018. Bombardier Service 

Bulletin 604–28–022, dated October 19, 2015, 

was incorporated by reference in AD 2017– 

22–06. 

(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 specified 

in paragraph (h) of this AD are done using 

Bombardier Service Bulletin 605–28–010, 

Revision 3, dated August 31, 2018. 

Bombardier Service Bulletin 605–28–010, 

dated October 19, 2015, was incorporated by 

reference in AD 2017–22–06. 

(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 (m)(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. 


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(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. 

(4) This paragraph provides credit for 

actions required by paragraph (j) of this AD, 

if those actions were performed before the 

effective date of this AD using Bombardier 

Service Bulletin 604–28–024, dated June 16, 

2020. This service information is not 

incorporated by reference in this AD. 

(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) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (p)(5) and (6) of this AD. 

(p) 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 this AD specifies otherwise. 

(3) The following service information was 

approved for IBR on February 25, 2022. 

(i) Bombardier Service Bulletin 604–28– 

022, Revision 3, dated August 31, 2018. 

(ii) Bombardier Service Bulletin 604–28– 

024, Revision 01, dated May 28, 2021. 

(iii) Bombardier Service Bulletin 605–28– 

010, Revision 3, dated August 31, 2018. 

(iv) Bombardier Service Bulletin 605–28– 

012, dated June 16, 2020. 

(v) Bombardier Service Bulletin 650–28– 

001, Revision 3, dated January 3, 2019. 

(vi) Bombardier Service Bulletin 650–28– 

002, dated June 16, 2020. 

(4) The following service information was 

approved for IBR on November 30, 2017 (82 

FR 49498, October 26, 2017). 

(i) Bombardier Service Bulletin 604–28– 

022, dated October 19, 2015. 

(ii) Bombardier Service Bulletin 605–28– 

010, dated October 19, 2015. 

(5) For service information identified in 

this AD, contact Bombardier Business 

Aircraft Customer Response Center, 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 1–514–855–2999; email 

ac.yul@aero.bombardier.com; internet 

https://www.bombardier.com. 

(6) 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. 

(7) 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 fr.inspection@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on December 17, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–00993 Filed 1–20–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0218; Project 

Identifier MCAI–2020–01519–A; Amendment 

39–21880; AD 2021–26–21] 

RIN 2120–AA64 

Airworthiness Directives; Pilatus 

Aircraft Ltd. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Pilatus Aircraft Ltd. (Pilatus) Model PC– 

24 airplanes. This AD was prompted by 

mandatory continuing airworthiness 

information (MCAI) originated by an 

aviation authority of another country to 

identify and correct an unsafe condition 

on an aviation product. The MCAI 

describes the unsafe condition as 

insufficient performance of the fuel 

drain system that could lead to fire and 

damage of the airplane. This AD 

requires modifying the fuel drain pipe 

routing and installing a drain mast. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective February 25, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of February 25, 2022. 

ADDRESSES: For service information 

identified in this final rule, contact 

Pilatus Aircraft Ltd., CH–6371, Stans, 

Switzerland; phone: +41 848 24 7 365; 

email: techsupport.ch@pilatusaircraft.com; website: https://

www.pilatus-aircraft.com. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, MO 64106. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0218; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

final rule, the MCAI, any comments 

received, and other information. The 

address for Docket Operations is U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE, Washington, DC 

20590. 

FOR FURTHER INFORMATION CONTACT: 

Doug Rudolph, Aviation Safety 

Engineer, FAA, General Aviation & 

Rotorcraft Section, International 

Validation Branch, 901 Locust, Room 

301, Kansas City, MO 64106; phone: 

(816) 329–4059; fax: (816) 329–4090; 

email: doug.rudolph@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 serial-numbered Pilatus 

Model PC–24 airplanes. The NPRM 

published in the Federal Register on 

October 8, 2021 (86 FR 56227). The 

NPRM was based on MCAI from the 

European Union Aviation Safety Agency 


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