82972 Federal Register / Vol. 85, No. 245 / Monday, December 21, 2020 / Proposed Rules 

(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: 

Rolls-Royce Deutschland Ltd & Co KG (Type 

Certificate previously held by RollsRoyce plc): Docket No. FAA–2020–1138; 

Project Identifier MCAI–2020–01258–E. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by February 4, 

2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (Type Certificate 

previously held by Rolls-Royce plc) (RRD) 

Trent 1000–A2, 1000–AE2, 1000–C2, 1000– 

CE2, 1000–D2, 1000–E2, 1000–G2, 1000–H2, 

1000–J2, 1000–K2 and 1000–L2 model 

turbofan engines with a low-pressure turbine 

(LPT) stage 3 disk with part number (P/N) 

KH36323, or an LPT stage 4 disk with P/N 

KH33943, installed. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by the 

manufacturer’s analysis of certain LPT disks 

in service. The analysis determined that, due 

to rubbing contact with interstage static seals, 

cracks may initiate in the front seal fins, 

which could lead to cracks in the LPT stage 

3 and stage 4 disks. The FAA is issuing this 

AD to prevent failure of the LPT disk. The 

unsafe condition, if not addressed, could 

result in uncontained LPT disk release, 

damage to the engine, and damage to the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) During each engine shop visit after the 

effective date of this AD, inspect the seal fins 

of the LPT stage 3 disk and the LPT stage 4 

disk in accordance with the Accomplishment 

Instructions, paragraphs 3.B and 3.C, of the 

Rolls-Royce Alert Non-Modification Service 

Bulletin (NMSB) Trent 1000 72–AK416, 

Initial Issue, dated June 29, 2020. 

(i) For an engine that is in an engine shop 

visit on the effective date of this AD, if the 

LPT stage 3 disk and LPT stage 4 disk are 

exposed, perform the inspection before the 

engine is returned to service. 

(ii) [Reserved] 

(2) If, during any inspection required by 

paragraph (g)(1) of this AD, any crack is 

detected, before further flight, remove the 

affected LPT disk and replace it with a part 

eligible for installation. 

(h) Definitions 

(1) For the purpose of this AD, an ‘‘engine 

shop visit’’ is the induction of an engine into 

the shop for maintenance involving the 

separation of pairs of major mating engine 

flanges, with the exception of the separation 

of engine flanges solely for the purpose of 

transporting the engine without subsequent 

maintenance. 

(2) For the purpose of this AD, a ‘‘part 

eligible for installation’’ is an LPT stage 3 

disk or LPT stage 4 disk with zero flight 

cycles since new, or an LPT stage 3 disk or 

LPT stage 4 disk that has passed the 

inspection required by paragraph (g)(1) of 

this AD. 

(i) 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. 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. 

(j) Related Information 

(1) For more information about this AD, 

contact Kevin M. 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) Refer to European Union Aviation 

Safety Agency (EASA) AD 2020–0195, dated 

September 8, 2020, for more information. 

You may examine the EASA AD in the AD 

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

searching for and locating it in Docket No. 

FAA–2020–1138. 

(3) For service information identified in 

this AD, contact Rolls-Royce plc, P.O. Box 

31, Derby, DE24 8BJ, United Kingdom, 

phone: +44 (0)1332 242424; 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 December 15, 2020. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2020–28042 Filed 12–18–20; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1139; Product 

Identifier 2018–SW–056–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 is proposing to 

adopt a new airworthiness directive 

(AD) for certain serial-numbered 

Leonardo S.p.a. (Leonardo) Model 

A109S and AW109SP helicopters. This 

proposed AD would require installing a 

placard in the baggage compartment, 

revising the existing Rotorcraft Flight 

Manual (RFM) for your helicopter, and 

inspecting the installation of the 

terminal lugs. Depending on the 

outcome of the inspection, this 

proposed AD would require restoring 

the installation of the terminal lugs. 

This proposed AD would also require 

modifying the helicopter to shim the 

baggage fairing assy (fwd up) away from 

the circuit breaker panel and 

incorporating protective coverings. This 

proposed AD was prompted by reports 

of several occurrences of fire ignition 

and smoke in the baggage compartment. 

The actions of this proposed AD are 

intended to address an unsafe condition 

on these products. 

DATES: The FAA must receive comments 

on this proposed AD by February 4, 

2021. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Docket: Go to 

https://www.regulations.gov. Follow the 

online instructions for sending your 

comments electronically. 

• Fax: 202–493–2251. 

• Mail: Send comments to the U.S. 

Department of Transportation, Docket 

Federal Register / Vol. 85, No. 245 / Monday, December 21, 2020 / Proposed Rules 82973 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE, Washington, DC 

20590–0001. 

• Hand Delivery: Deliver to the 

‘‘Mail’’ address between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

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–2020– 

1139; 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 proposed 

AD, the European Aviation Safety 

Agency (now European Union Aviation 

Safety Agency) (EASA) AD, any 

comments received, any service 

information that is incorporated by 

reference, and other information. The 

street address for Docket Operations is 

listed above. Comments will be 

available in the AD docket shortly after 

receipt. 

For service information identified in 

this proposed rule, contact Leonardo 

S.p.a. Helicopters, Emanuele Bufano, 

Head of Airworthiness, Viale G.Agusta 

520, 21017 C.Costa di Samarate (Va) 

Italy; telephone +39–0331–225074; fax 

+39–0331–229046; or at https://

www.leonardocompany.com/en/home. 

You may view the referenced service 

information at the FAA, Office of the 

Regional Counsel, Southwest Region, 

10101 Hillwood Pkwy., Room 6N–321, 

Fort Worth, TX 76177. 

FOR FURTHER INFORMATION CONTACT: 

Kristin Bradley, Aerospace Engineer, 

General Aviation & Rotorcraft Section, 

International Validation Branch, FAA, 

10101 Hillwood Pkwy., Fort Worth, TX 

76177; telephone 817–222–5110; email 

Kristin.Bradley@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–2020–1139; Product Identifier 

2018–SW–056–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.regualtions.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this proposal. 

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 Kristi Bradley, 

Aerospace Engineer, General Aviation & 

Rotorcraft Section, International 

Validation Branch, FAA, 10101 

Hillwood Pkwy., Fort Worth, TX 76177; 

telephone 817–222–5110; email 

kristin.bradley@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. 

Discussion 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA Emergency AD 

No. 2018–0120–E, dated May 29, 2018 

(EASA AD 2018–0120–E), to correct an 

unsafe condition for Leonardo S.p.a. 

(formerly Finmeccanica S.p.A., 

AgustaWestland S.p.A., Agusta S.p.A.) 

Model A109S and AW109SP 

helicopters. EASA advises that an 

occurrence was reported on an 

AW109SP helicopter, experiencing fire 

ignition and smoke in the baggage 

compartment. The investigation 

determined the event was due to chafing 

of electrical wiring and further analysis 

indicated that due to similarity of 

design, this event could also occur on 

A109S helicopters. Accordingly, the 

EASA AD requires modification of the 

affected baggage fairing assembly (fwd 

up) part number (P/N) 109–0344–31– 

101 and temporarily amending the 

existing RFM and installing a placard 

prohibiting carrying any loads in the 

baggage compartment. 

After EASA AD 2018–0120–E was 

issued, a second occurrence was 

reported of fire ignition and smoke in 

the baggage compartment, and as a 

precautionary measure Leonardo 

Helicopters issued a series of emergency 

alert service bulletins, providing 

instructions to prevent damage of 

electrical assemblies in the baggage 

compartment. Accordingly, EASA 

issued, EASA Emergency No. 2018– 

0149–E, dated July 13, 2018 (EASA AD 

2018–0149–E), which retains the 

requirements of EASA AD 2018–0120– 

E, and also requires repetitive 

inspections of the baggage compartment 

electrical assemblies and depending on 

the inspection outcomes, repairing or 

replacing certain parts. Also, EASA AD 

2018–0149–E expands the applicability 

to include three additional serialnumbered helicopters, and requires a 

modification, which acts as a 

terminating action for the repetitive 

inspections. EASA advises, that this 

condition, if not corrected, could lead to 

fire in the baggage compartment, 

resulting in loss of control of the 

helicopter. 

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 of the unsafe condition described 

in its AD. The FAA is proposing this AD 

after evaluating all information and 

determining the unsafe condition exists 

and is likely to exist or develop on other 

helicopters of these same type designs. 

Related Service Information Under 1 

CFR Part 51 

The FAA has reviewed Leonardo 

Helicopters Emergency Alert Service 

Bulletin (EASB) No. 109S–079, and 

Leonardo Helicopters EASB No. 109SP– 

120, each Revision A, and each dated 

June 4, 2018. This service information 

specifies instructions for manufacturing 

a placard for the baggage compartment 

door and also specifies instructions for 

modifying and inserting a specific 

cutout into the existing RFM. This 

service information also specifies 

instructions for removing the baggage 

fairing assembly (fwd up), and the 

rubber protections, inspecting the cable 

assemblies routing of both circuit 

breaker panels, and inspecting the 

installation of the terminal lugs. 

The FAA also reviewed Leonardo 

Helicopters EASB No. 109SP–122, and 

Leonardo Helicopters EASB No. 109S– 

081, each dated July 5, 2018, which 

82974 Federal Register / Vol. 85, No. 245 / Monday, December 21, 2020 / Proposed Rules 

specify procedures for modifying the 

helicopter by incorporating protective 

coverings. 

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. 

Proposed AD Requirements 

This proposed AD would require 

compliance with certain portions of the 

manufacturer’s service bulletin as well 

as, before further flight, for certain 

serial-numbered helicopters, installing a 

placard and revising the existing RFM 

for your helicopter. This proposed AD 

would also require within 5 hours timein-service (TIS), for certain model 

helicopters, inspecting the installation 

of the terminal lugs, shimming the 

installation of the baggage fairing 

assembly (fwd up), and installing a 

silicon rubber protection over the blind 

rivets of the hinge in accordance with 

certain applicable service information. 

This proposed AD would also require 

within 10 hours TIS and thereafter at 

intervals not to exceed 25 hours TIS 

until protective coverings are installed, 

removing the baggage fairing assembly 

(fwd up), removing the rubber 

protections, and inspecting the cable 

assembly routing of both circuit breaker 

panels for damage. Depending on the 

outcome of these inspections, this 

proposed AD would require repairing or 

replacing certain parts. This proposed 

AD would also require, within 200 

hours TIS, modifying the helicopter to 

incorporate a certain protective 

coverings, which would provide a 

terminating action for the repetitive 

inspections. 

Differences Between This AD and the 

EASA AD 

The EASA AD uses compliance times 

in terms of calendar dates, whereas this 

proposed AD uses compliance times 

terms of in hours TIS. 

Costs of Compliance 

The FAA estimates that this AD 

would affect 15 helicopters of U.S. 

Registry. The FAA estimates that 

operators may incur the following costs 

in order to comply with this proposed 

AD. Labor costs are estimated at $85 per 

work-hour. 

Installing a placard and revising the 

existing RFM for your helicopter would 

require about 1 work-hour for an 

estimated cost of $85 per helicopter and 

$1275 for the U.S. fleet. 

Inspecting the installation of the 

terminal lugs, shimming the baggage 

fairing assembly (fwd up), and installing 

a silicon rubber protection over the 

blind rivets removing the rubber 

protections would require about 3 workhours for an estimated cost of $255 per 

helicopter. 

Removing the baggage fairing 

assembly (fwd up) and performing a 

repetitive inspection of the cable 

assemblies of both circuit breaker panels 

for damage would require about 2 workhours for an estimated cost of $170 per 

helicopter per inspection cycle and 

$2,550 for the U.S. fleet per inspection 

cycle. 

Repairing a cable assembly would 

require about 4 work-hours and parts 

would cost about $340 for an estimated 

cost of $680 per repair. 

Modifying the helicopter by installing 

protective coverings would require 

about 4 work-hours and parts would 

cost about $20 for an estimated cost of 

$360 per helicopter and $5,400 for the 

U.S. fleet. 

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, I certify 

this proposed regulation: 

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 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 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 adding 

the following new airworthiness 

directive: 

Leonardo S.p.a.: Docket No. FAA–2020– 

1139; Product Identifier 2018–SW–056– 

AD. 

(a) Applicability 

This airworthiness directive (AD) applies 

to Leonardo S.p.a. Model A109S helicopters, 

serial number (S/N) 22702, 22703, 22705, 

and 22706 and AW109SP helicopters with S/ 

N up to 22386 inclusive, except S/N 22375 

and S/N 22376, certificated in any category. 

(b) Unsafe Condition 

This AD defines the unsafe condition as 

chafing of electrical wiring. This condition 

could result in fire ignition and smoke in the 

baggage compartment and subsequent loss of 

control of the helicopter. 

(c) Effective Date 

The FAA must receive comments by 

February 4, 2021. 

(e) Compliance 

You are responsible for performing each 

action required by this AD within the 

specified compliance time unless it has 

already been accomplished prior to that time. 

(f) Required Actions 

(1) For all helicopters, except Model A109S 

having S/N 22705 or S/N 22706 and Model 

AW109SP having S/N 22384, before further 

flight: 

(i) Install a placard with the information in 

Figure 5 of Leonardo Helicopters Emergency 

Alert Service Bulletin (EASB) No. 109S–079 

(EASB 109S–079), or Leonardo Helicopters 

EASB No. 109SP–120 (EASB 109SP–120), 

each Revision A, and each dated June 4, 

2018, as applicable to your helicopter model, 

in the baggage compartment on the internal 

side of the baggage door D8. 

(ii) Revise the existing Rotorcraft Flight 

Manual (RFM) for your helicopter by cutting 

along the dashed line of Figure 6 of EASB 

109S–079 or EASB 109SP–120, as applicable 

to your model helicopter, and inserting the 

cutout to replace page 1–28 or 1–3, as 

Federal Register / Vol. 85, No. 245 / Monday, December 21, 2020 / Proposed Rules 82975 

applicable to your model helicopter, of the 

existing RFM for your helicopter. 

(2) For all helicopters, except Model A109S 

having S/N 22705 or S/N 22706 and Model 

AW109SP having S/N 22384, within 5 hours 

time-in-service (TIS): 

(i)Visually inspect the installation of the 

terminal lugs to determine whether the 

installation is consistent with Figure 2 of 

EASB 109SP–120 or EASB 109S–079, as 

applicable to your model helicopter. If the 

installation is not consistent with Figure 2 of 

EASB 109SP–120 or EASB 109S–079, as 

applicable to your model helicopter, restore 

the installation to be consistent with Figure 

2 of EASB 109SP–120 or EASB 109S–079, as 

applicable to your model helicopter. 

(ii) Shim the installation of the baggage 

fairing assembly (fwd up) P/N 109–0344–31– 

101 to move it away from the circuit breaker 

panel, and install a silicon rubber protection 

over the blind rivets of the hinge in 

accordance with the Accomplishment 

Instructions, Part II, steps 3 through 8 of 

EASB 109S–079 or EASB 109SP–120, as 

applicable to your model helicopter. 

(3) Performing the steps as described in 

paragraph (f)(2) of this AD allows the RFM 

revision described in paragraph (f)(1) of this 

AD to be removed from the existing RFM for 

your helicopter and the placard described in 

paragraph (f)(1) of this AD to be removed 

from the helicopter. 

(4) For all helicopters, within 10 hours TIS 

and thereafter at intervals not to exceed 25 

hours TIS, remove the baggage fairing 

assembly (fwd up) P/N 109–0344–31–101, 

remove the rubber protections P/N 109– 

0746–52–105 and P/N 109–0746–52–107, 

and inspect the cable assemblies routing of 

both circuit breaker panels for damage. For 

the purposes of this inspection, damage may 

be indicated by chafing. If there is any 

damage, repair or replace the cables in 

accordance with FAA accepted procedures 

and protect the cables by installing Nomex 

sleeve P/N EN6049–006. 

(5) For all helicopters, within 200 hours 

TIS, modify the helicopter’s baggage 

compartment by adding the protective 

coverings in accordance with the 

Accomplishment Instructions, Part II, steps 3 

through 14 of Leonardo Helicopters EASB 

No. 109SP–122, dated July 5, 2018 or 

Leonardo Helicopters EASB No. 109S–081, 

dated July 5, 2018, as applicable to your 

model helicopter. Completion of this 

modification is a terminating action for the 

25 hour TIS repetitive inspections of 

paragraph (f)(4) of this AD. 

(g) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, may approve AMOCs for this 

AD. Send your proposal to: Kristi Bradley, 

Aerospace Engineer, General Aviation & 

Rotorcraft Section, International Validation 

Branch, FAA, 10101 Hillwood Pkwy., Fort 

Worth, TX 76177; telephone 817–222–5110; 

email 9-AVS-AIR-730-AMOC@faa.gov. 

(2) For operations conducted under a 14 

CFR part 119 operating certificate or sunder 

14 CFR part 91, subpart K, the FAA suggests 

that you notify your principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office or 

certificate holding district office, before 

operating any aircraft complying with this 

AD through an AMOC. 

(h) Additional Information 

The subject of this AD is addressed in 

European Aviation Safety Agency (now 

European Union Aviation Safety Agency) 

(EASA) AD No. 2018–0149–E, dated July 13, 

2018. You may view the EASA AD on the 

internet at https://www.regulations.gov in the 

AD Docket. 

(i) Subject 

Joint Aircraft Service Component (JASC) 

Code: 5397, Fuselage Wiring, Baggage 

Fairings Modification. 

Issued on December 16, 2020. 

Lance T. Gant, 

Director,Compliance & Airworthiness 

Division,Aircraft Certification Service. 

[FR Doc. 2020–28076 Filed 12–18–20; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–1137; Project 

Identifier MCAI–2020–00816–T] 

RIN 2120–AA64 

Airworthiness Directives; MHI RJ 

Aviation ULC (Type Certificate 

Previously Held by 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 MHI RJ Aviation ULC Model 

CL–600–2C10 (Regional Jet Series 700, 

701 & 702), CL–600–2C11 (Regional Jet 

Series 550), and CL–600–2D24 (Regional 

Jet Series 900) airplanes. This proposed 

AD was prompted by a report that some 

piccolo ducts for the wing anti-ice 

system have bleed holes that do not 

conform to requirements. This proposed 

AD would require, depending on 

airplane configuration, inspection for 

the presence of affected wing anti-ice 

system piccolo ducts and corrective 

actions, or replacement of affected 

piccolo ducts with new piccolo ducts. 

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 February 4, 

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 MHI RJ Aviation 

ULC, 12655 Henri-Fabre Blvd., Mirabel, 

Que ́bec J7N 1E1 Canada; Widebody 

Customer Response Center North 

America toll-free telephone +1–844– 

272–2720 or direct-dial telephone +1– 

514–855–8500; fax +1–514–855–8501; 

email thd.crj@mhirj.com; internet 

https://mhirj.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–2020– 

1137; 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: 

Siddeeq Bacchus, Aerospace Engineer, 

Mechanical Systems and Administrative 

Services Section, FAA, New York ACO 

Branch, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 

516–228–7362; 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 the ADDRESSES section. Include 

‘‘Docket No. FAA–2020–1137; Project 

Identifier MCAI–2020–00816–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