Federal Register / Vol. 86, No. 154 / Friday, August 13, 2021 / Proposed Rules 44657 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) (Type 

Certificate previously held by Rolls-Royce 

plc) Trent 1000–AE3, Trent 1000–CE3, Trent 

1000–D3, Trent 1000–G3, Trent 1000–H3, 

Trent 1000–J3, Trent 1000–K3, Trent 1000– 

L3, Trent 1000–M3, Trent 1000–N3, Trent 

1000–P3, Trent 1000–Q3, and Trent 1000–R3 

model turbofan engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by reports of high 

levels of wear on the seal fins on a small 

number of certain high-pressure turbine 

(HPT) triple seals. The FAA is issuing this 

AD to prevent wear on the seal fins on the 

affected HPT triple seals. The unsafe 

condition, if not addressed, could result in 

failure of the intermediate-pressure turbine 

disk, loss of engine thrust control, and loss 

of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within the compliance time specified in 

figure 1 to paragraph (g) of this AD, 

deactivate the modulated air system (MAS) 

control valves using the Accomplishment 

Instructions, paragraphs 3.A.(6) and 3.A.(7), 

of Rolls-Royce Alert Non-Modification 

Service Bulletin (NMSB) Trent 1000 75– 

AK642, Initial Issue, dated November 30, 

2020. 

Note 1 to paragraph (g): Deactivation of the 

MAS control valves on an engine required by 

paragraph (g) of this AD changes the engine 

to an approved configuration that will 

produce engine indicating and crew alerting 

system (EICAS) status messages ‘‘ENG MAS 

VALVE L/R’’ and ‘‘ENG MAS SYS TEST L/ 

R.’’ Since MAS is purposely disabled after 

compliance with paragraph (g) of this AD, 

these status messages do not indicate 

inoperative (failed) equipment and, 

consequently, the operator’s existing FAAapproved minimum equipment list (MEL) 

instructions and limitations, including the 

120-day operation limitation, do not apply. 

Note 2 to paragraph (g): Deactivation of the 

MAS control valves on an engine as required 

by paragraph (g) of this AD does not produce 

the EICAS status message ‘‘ENG MAS VALVE 

SENSOR L/R.’’ Consequently, when this 

EICAS message displays, it remains 

indicative of inoperative equipment, even if 

the MAS has been disabled as required by 

paragraph (g) of this AD. As a result, the 

corresponding MEL instructions and 

limitations apply whenever the EICAS status 

message ‘‘ENG MAS VALVE SENSOR L/R’’ is 

displayed. 

FIGURE 1 TO PARAGRAPH (g)—COMPLIANCE TIME

MAS deactivation 

option Compliance time, whichever occurs later after the effective date of this AD, A or B 

A ............................. Within 50 engine flight cycles (FCs) since new. 

B ............................. Within 30 days or 100 FCs, whichever occurs first. 

(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 certification office, 

send it to the attention of the person 

identified in Related Information. 

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. 

(i) Related Information 

(1) For more information about this AD, 

contact Kevin Clark, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

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

238–7088; fax: (781) 238–7199; email: 

kevin.m.clark@faa.gov. 

(2) For service information identified in 

this AD, contact Rolls-Royce plc, Corporate 

Communications, P.O. Box 31, Derby, DE24 

8BJ, United Kingdom; phone: +44 (0)1332 

242424; fax: +44 (0)1332 249936; website: 

https://www.rolls-royce.com/contact-us.aspx. 

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 August 5, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–17071 Filed 8–12–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0659; Project 

Identifier 2018–SW–112–AD] 

RIN 2120–AA64 

Airworthiness Directives; Leonardo 

S.p.a. Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for all 

Leonardo S.p.a. Model A109A, A109A 

II, A109C, A109E, A109K2, A109S, 

AW109SP, A119, and AW119 MKII 

helicopters. This proposed AD was 

prompted by a report of damage to a 

rigid connecting link (rod), and 

loosening of the nut on the upper rod 

end. This proposed AD would require a 

visual inspection of the affected rods for 

damage, cracks, or abnormal play, and 

corrective actions if necessary, as 

specified in a European Aviation Safety 

Agency (now European Union Aviation 

Safety Agency) (EASA) AD, which is 

proposed for incorporation by reference 

(IBR). 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 September 27, 

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 EASA material that is proposed 

for IBR in this AD, contact EASA, 

Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 

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

internet www.easa.europa.eu. You may 

find this IBR material on the EASA 

website at https://ad.easa.europa.eu. 

You may view this material at the FAA, 

Office of the Regional Counsel, 


jbell on DSKJLSW7X2PROD with PROPOSALS
44658 Federal Register / Vol. 86, No. 154 / Friday, August 13, 2021 / Proposed Rules 

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 is 

also available at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0659. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0659; 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 EASA AD, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

FOR FURTHER INFORMATION CONTACT: 

Darren Gassetto, Aerospace Engineer, 

COS Program Management Section, 

Operational Safety Branch, Compliance 

& Airworthiness Division, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; phone: (516) 228–7323; email: 

Darren.Gassetto@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–2021–0659; Project Identifier 

2018–SW–112–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 this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Darren Gassetto, 

Aerospace Engineer, COS Program 

Management Section, Operational 

Safety Branch, Compliance & 

Airworthiness Division, FAA, 1600 

Stewart Ave., Suite 410, Westbury, NY 

11590; phone: (516) 228–7323; email: 

Darren.Gassetto@faa.gov. Any 

commentary that the FAA receives that 

is not specifically designated as CBI will 

be placed in the public docket for this 

rulemaking. 

Background 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2018–0280, dated December 17, 2018 

(EASA AD 2018–0280), to correct an 

unsafe condition for Leonardo S.p.a. 

(formerly Finmeccanica S.p.A., 

AgustaWestland S.p.A., Agusta S.p.A.; 

and AgustaWestland Philadelphia 

Corporation, formerly Agusta Aerospace 

Corporation) Model A109A, A109A II, 

A109C, A109E, A109K2, A109S, 

A109LUH, AW109SP, A119, and 

AW119 MKII helicopters. Model 

A109LUH helicopters are not 

certificated by the FAA and are not 

included on the U.S. type certificate 

data sheet; this AD therefore does not 

include those helicopters in the 

applicability. 

This proposed AD was prompted by 

a report of damage to a rod, and 

loosening of the nut on the upper rod 

end. The FAA is proposing this AD to 

address damage to the rod, and 

loosening of the nut on the upper rod 

end, which could result in failure of the 

rod, possibly resulting in reduced 

control of the helicopter. See EASA AD 

2018–0280 for additional background 

information. 

Related Service Information Under 1 

CFR Part 51 

EASA AD 2018–0280 requires a visual 

inspection of the affected rods for 

damage, cracks, or evidence of abnormal 

play, and, depending on findings, any 

applicable corrective actions (which 

include replacing damaged or cracked 

connecting links and actions to address 

abnormal play). 

This material 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 

These helicopters have been approved 

by EASA and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the 

European Union, EASA has notified the 

FAA about the unsafe condition 

described in its AD. The FAA is 

proposing this AD after evaluating all 

known relevant information and 

determining that the unsafe condition 

described previously is likely to exist or 

develop on other helicopters of these 

same type designs. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

accomplishing the actions specified in 

EASA AD 2018–0280, described 

previously, as incorporated by 

reference, except for any differences 

identified as exceptions in the 

regulatory text of this proposed AD. 

Explanation of Required Compliance 

Information 

In the FAA’s ongoing efforts to 

improve the efficiency of the AD 

process, the FAA developed a process to 

use some civil aviation authority (CAA) 

ADs as the primary source of 

information for compliance with 

requirements for corresponding FAA 

ADs. The FAA has been coordinating 

this process with manufacturers and 

CAAs. As a result, the FAA proposes to 

incorporate EASA AD 2018–0280 by 

reference in the FAA final rule. This 

proposed AD would, therefore, require 

compliance with EASA AD 2018–0280 

in its entirety through that 

incorporation, except for any differences 

identified as exceptions in the 

regulatory text of this proposed AD. 

Using common terms that are the same 

as the heading of a particular section in 

EASA AD 2018–0280 does not mean 

that operators need comply only with 

that section. For example, where the AD 

requirement refers to ‘‘all required 

actions and compliance times,’’ 

compliance with this AD requirement is 

not limited to the section titled 

‘‘Required Action(s) and Compliance 

Time(s)’’ in EASA AD 2018–0280. 

Service information required by EASA 

AD 2018–0280 for compliance will be 

available at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0659 after the FAA final 

rule is published. 


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Federal Register / Vol. 86, No. 154 / Friday, August 13, 2021 / Proposed Rules 44659 

Interim Action 

The FAA considers this proposed AD 

would be an interim action. The 

inspection reports that are required by 

this AD will enable the manufacturer to 

obtain better insight into the nature, 

cause, and extent of the cracking, and 

eventually to develop final action to 

address the unsafe condition. Once final 

action has been identified, the FAA 

might consider further rulemaking. 

Costs of Compliance 

The FAA estimates that this proposed 

AD affects 291 helicopters of U.S. 

registry. The FAA estimates the 

following costs to comply with this 

proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

1 work-hour × $85 per hour = $85 .............................................................................................. $0 $85 $24,735 

The FAA estimates that it would take 

about 1 work-hour per product to 

comply with the proposed reporting 

requirement in this proposed AD. The 

average labor rate is $85 per hour. Based 

on these figures, the FAA estimates the 

cost of reporting the inspection results 

on U.S. operators to be $24,735, or $85 

per product. 

The FAA estimates the following 

costs to do any necessary on-condition 

replacements that would be required 

based on the results of any required 

inspections. The FAA has no way of 

determining the number of aircraft that 

might need these on-condition 

replacements: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per 

product 

3 work-hours × $85 per hour = $255 ........................................................................................................... Up to $2,351 ....... Up to $2,606. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some of the 

costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

operators. 

Paperwork Reduction Act 

A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject 

to a penalty for failure to comply with 

a collection of information subject to the 

requirements of the Paperwork 

Reduction Act unless that collection of 

information displays a current valid 

OMB Control Number. The OMB 

Control Number for this information 

collection is 2120–0056. Public 

reporting for this collection of 

information is estimated to take 

approximately 1 hour per response, 

including the time for reviewing 

instructions, searching existing data 

sources, gathering and maintaining the 

data needed, and completing and 

reviewing the collection of information. 

All responses to this collection of 

information are mandatory. Send 

comments regarding this burden 

estimate or any other aspect of this 

collection of information, including 

suggestions for reducing this burden, to: 

Information Collection Clearance 

Officer, Federal Aviation 

Administration, 10101 Hillwood 

Parkway, Fort Worth, TX 76177–1524. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

The FAA determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

national Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 

(3) Would not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

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

0659; Project Identifier 2018–SW–112– 

AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by September 

27, 2021. 


jbell on DSKJLSW7X2PROD with PROPOSALS
44660 Federal Register / Vol. 86, No. 154 / Friday, August 13, 2021 / Proposed Rules 

(b) Affected ADs 

None. 

(c) Applicability 

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

A109A, A109A II, A109C, A109E, A109K2, 

A109S, AW109SP, A119, and AW119 MKII 

helicopters, certificated in any category, with 

an affected part as identified in European 

Aviation Safety Agency (now European 

Union Aviation Safety Agency) (EASA) AD 

2018–0280, dated December 17, 2018 (EASA 

AD 2018–0280). 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Codes: 6700, Rotorcraft Flight Control; 6730, 

Rotorcraft Servo System. 

(e) Unsafe Condition 

This AD was prompted by a report of 

damage to a rigid connecting link (rod), and 

loosening of the nut on the upper rod end. 

The FAA is issuing this AD to address 

damage to the rod, and loosening of the nut 

on the upper rod end. The unsafe condition, 

if not addressed, could result in failure of the 

rod, possibly resulting in reduced 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 2018–0280. 

(h) Exceptions to EASA AD 2018–0280 

(1) Where EASA AD 2018–0280 requires 

compliance in terms of flight hours, this AD 

requires using hours time-in-service. 

(2) Where EASA AD 2018–0280 requires 

compliance from its effective date, this AD 

requires using the effective date of this AD. 

(3) Where EASA AD 2018–0280 specifies 

action if ‘‘any discrepancy’’ is found, for this 

AD, discrepancies include damage, cracks, 

and evidence of abnormal play. 

(4) Where the service information specified 

in EASA AD 2018–0280 specifies to ‘‘replace 

the damaged connecting link’’, for this AD, 

if any damage or cracks are found, remove 

the rod from service. 

(5) Where the service information specified 

in EASA AD 2018–0280 specifies to ‘‘contact 

Leonardo Helicopters’’ if abnormal play is 

detected, for this AD if any abnormal play is 

detected, corrective action must be 

accomplished using a method approved by 

the Manager, International Validation 

Branch, FAA; or EASA; or Leonardo S.p.a.’s 

EASA Design Organization Approval (DOA). 

If approved by the DOA, the approval must 

include the DOA-authorized signature. 

(6) Where EASA AD 2018–0280 requires 

reporting inspection results to Leonardo 

S.p.a. within 14 days after the effective date 

of EASA AD 2018–0280, this AD requires 

reporting inspection results at the applicable 

time in paragraph (h)(6)(i) or (ii) of this AD. 

(i) If the inspection was done on or after 

the effective date of this AD: Submit the 

report within 14 days after the inspection. 

(ii) If the inspection was done before the 

effective date of this AD: Submit the report 

within 14 days after the effective date of this 

AD. 

(7) This AD does not require the 

‘‘Remarks’’ section of EASA AD 2018–0280. 

(i) Special Flight Permit 

Special flight permits, as described in 14 

CFR 21.197 and 21.199, are not allowed. 

(j) 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 (k)(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. 

(k) Related Information 

(1) For EASA AD 2018–0280, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 000; 

email: ADs@easa.europa.eu; internet 

www.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–2021–0659. 

(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; phone: 

(516) 228–7323; email: Darren.Gassetto@

faa.gov. 

Issued on August 4, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–17046 Filed 8–12–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0660; Project 

Identifier AD–2021–00398–T] 

RIN 2120–AA64 

Airworthiness Directives; Learjet 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 Learjet Inc. Model 45 airplanes. 

This proposed AD was prompted by a 

report of a fuel leak due to a cracked 

fuel line between the engine fuel control 

and the engine fuel flow meter. This 

proposed AD would require replacing 

the existing fuel flow meter bracket 

assembly with a redesigned bracket 

assembly and reporting information to 

the FAA. 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 September 27, 

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 Learjet Inc., One 

Learjet Way, Wichita, KS 67209; phone: 

(316) 946–2000; email: ac.ict@

aero.bombardier.com; website: https:// 

businessaircraft.bombardier.com/en/ 

aircraft/Learjet.html. 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 


jbell on DSKJLSW7X2PROD with PROPOSALS