Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 51029 

(h) No Reporting Requirements 

The reporting requirements in the 

Accomplishment/Instructions, paragraph 

2.2., of the MSB, are not required by this AD. 

(i) Installation Prohibition 

After the effective date of this AD, do not 

install onto any engine an oil pump, P/N 

E4A–50–000–BHY, with an S/N listed in 

paragraph 1.2., Engines Affected, of the MSB. 

(j) Definitions 

For the purpose of this AD: 

(1) Group 1 engines are E4 model diesel 

piston engines in configuration ‘‘-A’’ that are 

installed on single-engine airplanes. 

(2) Group 2 engines are E4 model diesel 

piston engines in configuration ‘‘-B’’ or ‘‘-C’’ 

and E4P model diesel piston engines that are 

installed on twin-engine airplanes. 

(3) A ‘‘part eligible for installation’’ is an 

oil pump with a P/N and S/N that is not 

listed in paragraph 1.2., Engines Affected, of 

the MSB. 

(k) Credit for Previous Actions 

You may take credit for replacing the oil 

pump, oil filter, and engine oil required by 

paragraph (g) of this AD if you performed 

these replacements before the effective date 

of this AD using the Accomplishment/ 

Instructions, paragraph 2.2., of Austro Engine 

GmbH MSB No. MSB–E4–030, Original Issue, 

dated February 18, 2021; Revision No. 1, 

dated February 23, 2021; Revision No. 2, 

dated March 3, 2021; or Revision No. 3, dated 

March 18, 2021. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, ECO Branch, FAA, has 

the authority to approve AMOCs for this AD, 

if requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (m)(1) of this AD. 

Information may be emailed to: ANE-ADAMOC@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. 

(m) Related Information 

(1) For more information about this AD, 

contact Wego Wang, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

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

238–7134; fax: (781) 238–7199; email: 

wego.wang@faa.gov. 

(2) For service information identified in 

this AD, contact Austro Engine GmbH, 

Rudolf-Diesel-Strasse 11, 2700 Weiner 

Neustadt, Austria; phone: +43 2622 23000; 

website: www.austroengine.at. You may view 

this referenced service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (781) 238–7759. 

Issued on September 7, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–19628 Filed 9–13–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0784; Project 

Identifier MCAI–2020–01455–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 

determination that new or more 

restrictive airworthiness limitations are 

necessary. This proposed AD would 

require revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

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 29, 

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 on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0784; 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: 

Elizabeth Dowling, 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–2021–0784; Project Identifier 

MCAI–2020–01455–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 


tkelley on DSK125TN23PROD with PROPOSALS
51030 Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 

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 Elizabeth Dowling, 

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.go. Any 

commentary that the FAA receives 

which 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– 

2020–44, dated October 23, 2020 

(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 on the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0784. 

This proposed AD was prompted by 

a determination that new or more 

restrictive airworthiness limitations are 

necessary. The FAA is proposing this 

AD to address fatigue cracking and loss 

of structural integrity of the 

circumferential splice joint, which 

could result in reduced structural 

integrity of the airplane. See the MCAI 

for additional background information. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed the following 

Bombardier service information, which 

describes new or more restrictive 

airworthiness limitations (a special 

detailed inspection for cracking of the 

skin circumferential splice at fuselage 

station (FS) 559.00, between stringer 

(STR) 10L and STR10R. These 

documents are distinct since they apply 

to different airplane configurations. 

(Note: The asterisk (or ‘‘one star’’) with 

the last three digits of the task number 

indicates that the task is an 

airworthiness limitation task.) 

• Task 53–30–00–165*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger 605 CL–600– 

1A11 Time Limits/Maintenance Checks 

(TLMC), Product Support Publication 

(PSP) 605, Temporary Revision (TR) 5– 

163, dated April 30, 2020. 

• Task 53–30–00–188*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger CL–600–2A12 

TLMC, PSP 601–5, TR 5–267, dated 

April 30, 2020. 

• Task 53–30–00–191*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger CL–600–2B16 

TLMC, PSP 601A–5, TR 5–281, dated 

April 30, 2020. 

• Task 53–20–00–192*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger CL–600–2B16, 

CH 604, TLMC, Revision 32, dated 

December 18, 2019. 

• Task 53–20–00–192*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger CL–600–2B16, 

CH 605, TLMC, Revision 21, dated 

December 18, 2019. 

• Task 53–20–00–192*, ‘‘Special 

Detailed Inspection of the Skin 

Circumferential Splice at FS559.00 

between STR10L and STR10R,’’ of 

Bombardier Challenger CL–600–2B16, 

CH 650, TLMC, Revision 8, 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 Requirements of This NPRM 

This proposed AD would require 

revising the existing maintenance or 

inspection program, as applicable, to 

incorporate new or more restrictive 

airworthiness limitations. 

This proposed AD would require 

revisions to certain operator 

maintenance documents to include new 

actions (e.g., inspections). Compliance 

with these actions is required by 14 CFR 

91.403(c). For airplanes that have been 

previously modified, altered, or repaired 

in the areas addressed by this proposed 

AD, the operator may not be able to 

accomplish the actions described in the 

revisions. In this situation, to comply 

with 14 CFR 91.403(c), the operator 

must request approval for an alternative 

method of compliance according to 

paragraph (i)(1) of this proposed AD. 

Costs of Compliance 

The FAA estimates that this proposed 

AD affects 463 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this proposed AD: 

The FAA has determined that revising 

the maintenance or inspection program 

takes an average of 90 work-hours per 

operator, although the agency 

recognizes that this number may vary 

from operator to operator. Since 

operators incorporate maintenance or 

inspection program changes for their 

affected fleet(s), the FAA has 

determined that a per-operator estimate 

is more accurate than a per-airplane 

estimate. Therefore, the agency 

estimates the average total cost per 

operator to be $7,650 (90 work-hours × 

$85 per work-hour). 

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. 


tkelley on DSK125TN23PROD with PROPOSALS
Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 51031 

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– 

0784; Project Identifier MCAI–2020– 

01455–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive by October 29, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bombardier, Inc., 

airplanes, certificated in any category, 

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

this AD. 

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

serial numbers 1004 through 1085 inclusive. 

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

serial numbers 3001 through 3066 inclusive. 

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

and 604 Variants) airplanes, serial numbers 

5001 through 5194 inclusive, 5301 through 

5665 inclusive, 5701 through 6049 inclusive, 

and 6050 through 6999 inclusive. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 05, Time Limits/Maintenance 

Checks. 

(e) Reason 

This AD was prompted by a determination 

that new or more restrictive airworthiness 

limitations are necessary. The FAA is issuing 

this AD to address fatigue cracking and loss 

of structural integrity of the circumferential 

splice joint, which could result in reduced 

structural integrity of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Maintenance or Inspection Program 

Revision 

Within 60 days after the effective date of 

this AD, revise the existing maintenance or 

inspection program, as applicable, to 

incorporate the information specified in 

Figure 1 to paragraph (g) of this AD. The 

initial compliance time for doing the tasks is 

at the time specified in the applicable 

document specified in Figure 1 to paragraph 

(g) of this AD, or within 60 days after the 

effective date of this AD, whichever occurs 

later. 

BILLING CODE 4910–13–P 


tkelley on DSK125TN23PROD with PROPOSALS
51032 Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 

(h) No Alternative Actions or Intervals 

After the existing maintenance or 

inspection program has been revised as 

required by paragraph (g) of this AD, no 

alternative actions (e.g., inspections) or 

intervals, may be used unless the actions and 

intervals are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (i)(1) of this AD. 

(i) 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 


tkelley on DSK125TN23PROD with PROPOSALSEP14SE21.003</GPH>

Figure 1 to paragraph (g) -

Time Limits/Maintenance Checks (TIMC) Revisions and Task Numbers 

For Model- Having Serial TLMC Task Numbers and 

numbers- Title 

Model CL-600- 1004 through PSP 605 TLMC Temporary 53-30-00-165* 

lAl 1 (600 1085 inclusive Revision (TR) 5-163, dated Special Detailed 

variant) April30,2020 Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRlOL and STRlOR 

Model CL-600- 3001 through PSP 601-5 TLMC TR 5-267, 53-30-00-188* 

2A12 (601 3066 inclusive dated April 30, 2020 Special Detailed 

variant) Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRl0L and STRl0R 

Model CL-600- 5001 through PSP 601A-5 TLMC TR 53-30-00-191 * 

2B16 (601- 5194 inclusive 5-281, dated April 30, 2020 Special Detailed 

3A/3R variant) Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRl0L and STRl0R 

Model CL-600- 5301 through CH 604 TLMC Revision 32, 53-20-00-192* 

2B16 (604 5665 inclusive dated December 18, 2019 Special Detailed 

variant) Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRlOL and STRlOR 

Model CL-600- 5701 through CH 605 TLMC Revision 21, 53-20-00-192* 

2B16 (604 6049 inclusive dated December 18, 2019 Special Detailed 

variant) Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRlOL and STRlOR 

Model CL-600- 6050 through CH 650 TLMC Revision 8, 53-20-00-192* 

2B16 (604 6999 inclusive dated December 18, 2019; Special Detailed 

variant) Inspection of the Skin 

airplanes Circumferential Splice 

at FS559.00 between 

STRlOL and STRlOR 

Note: The asterisk (or "one star") with the last three digits of the task number indicates that 

the task is an airworthiness limitation task. 
Federal Register / Vol. 86, No. 175 / Tuesday, September 14, 2021 / Proposed Rules 51033 

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. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) TCCA AD 

CF–2020–44, dated October 23, 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–2021–0784. 

(2) For more information about this AD, 

contact Elizabeth Dowling, 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. 

(3) For service information identified in 

this AD, 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. 

Issued on September 8, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–19703 Filed 9–13–21; 8:45 am] 

BILLING CODE 4910–13–C 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0778; Project 

Identifier 2019–CE–062–AD] 

RIN 2120–AA64 

Airworthiness Directives; Daher 

Aerospace (Type Certificate Previously 

Held by SOCATA) 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 Daher Aerospace (type certificate 

previously held by SOCATA) Model 

TBM 700 airplanes. This proposed 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 a non-conforming dump 

switch ejecting from its slot. This 

proposed AD would require modifying 

certain dump switches. 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 29, 

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 Daher Aerospace, 

601 NE 10 Street, Pompano Beach, FL 

33060; phone: (954) 366–3331; email: 

TBMCare@daher.com; website: https://

www.daher.com/en/aircraftmanufacturer/customer-service/. 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 (816) 329–4148. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0778; or in person at Docket 

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

Monday through Friday, except Federal 

holidays. The AD docket contains this 

NPRM, the MCAI, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

FOR FURTHER INFORMATION CONTACT: 

Gregory Johnson, Aviation Safety 

Engineer, FAA, General Aviation & 

Rotorcraft Section, International 

Validation Branch, 901 Locust, Room 

301, Kansas City, MO 64106; phone: 

(720) 626–5462; fax: (816) 329–4090; 

email: gregory.johnson@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 the ADDRESSES section. Include 

‘‘Docket No. FAA–2021–0778; Project 

Identifier 2019–CE–062–AD’’ 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 


tkelley on DSK125TN23PROD with PROPOSALS