Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 11169 

(i) 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 MHI RJ Aviation ULC’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–2018–32R1, dated August 7, 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–2021–0098. 

(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; email 9-avsnyaco-cos@faa.gov. 

(3) For MHI RJ Aviation ULC service 

information identified in this AD, 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. 

Issued on February 12, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03589 Filed 2–23–21; 8:45 am] 

BILLING CODE 4910–13–C 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2020–0973; Project 

Identifier MCAI–2020–01113–T] 

RIN 2120–AA64 

Airworthiness Directives; ATR–GIE 

Avions de Transport Re ́gional 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (SNPRM); 

reopening of comment period. 

SUMMARY: The FAA is revising an earlier 

proposal to supersede Airworthiness 

Directives (AD) 2000–23–04 R1 and AD 

2018–20–14, which apply to certain 

ATR–GIE Avions de Transport Re ́gional 

Model ATR42–500 airplanes. This 

action revises the notice of proposed 

rulemaking (NPRM) by including new 

or more restrictive airworthiness 

limitations. The FAA is proposing this 

AD to address the unsafe condition on 

these products. Since this action would 


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11170 Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 

impose an additional burden over those 

in the NPRM, the FAA is reopening the 

comment period to allow the public the 

chance to comment on these changes. 

DATES: The comment period for the 

NPRM published in the Federal 

Register on October 29, 2020 (85 FR 

68503), is reopened. 

The FAA must receive comments on 

this proposed AD by April 12, 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: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For material that will be incorporated 

by reference (IBR) in this AD, contact 

the European Union Aviation Safety 

Agency (EASA), Konrad-Adenauer-Ufer 

3, 50668 Cologne, Germany; telephone 

+49 221 8999 000; email ADs@

easa.europa.eu; internet 

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

IBR material on the EASA website at 

https://ad.easa.europa.eu. For ATR–GIE 

service information identified in this 

proposed rule, contact ATR–GIE Avions 

de Transport Re ́gional, 1 Alle ́e Pierre 

Nadot, 31712 Blagnac Cedex, France; 

telephone +33 (0) 5 62 21 62 21; fax +33 

(0) 5 62 21 67 18; email 

continued.airworthiness@atraircraft.com; http://www.atraircraft.com. You may view this IBR 

material 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 in 

the AD docket on the internet at https:// 

www.regulations.gov by searching for 

and locating Docket No. FAA–2020– 

0973. 

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– 

0973; 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 SNPRM, 

any comments received, and other 

information. The street address for 

Docket Operations is listed above. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Shahram Daneshmandi, Aerospace 

Engineer, Large Aircraft Section, 

International Validation Branch, FAA, 

2200 South 216th St., Des Moines, WA 

98198; telephone and fax 206–231– 

3220; email Shahram.Daneshmandi@

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–2020–0973; Project Identifier 

MCAI–2020–01113–T’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend the proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this proposed 

AD. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

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

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

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

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Shahram 

Daneshmandi, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3220; email 

Shahram.Daneshmandi@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 

The FAA issued AD 2000–23–04 R1, 

Amendment 39–12174 (66 FR 19381, 

April 16, 2001) (AD 2000–23–04 R1) 

and AD 2018–20–14, Amendment 39– 

19448 (83 FR 52123, October 16, 2018) 

(AD 2018–20–14). ADs 2000–23–04 R1 

and 2018–20–14 require actions to 

address an unsafe condition on certain 

ATR–GIE Avions de Transport Re ́gional 

Model ATR42–500 airplanes. ADs 

2000–23–04 R1 and 2018–20–14 require 

revising the maintenance or inspection 

program, as applicable, to incorporate 

new and/or more restrictive 

maintenance requirements and 

airworthiness limitations. 

The FAA issued an NPRM to amend 

14 CFR part 39 by adding an AD to 

supersede AD 2000–23–04 R1 and AD 

2018–20–14 that would apply to certain 

ATR–GIE Avions de Transport Re ́gional 

Model ATR42–500 airplanes. The 

NPRM published in the Federal 

Register on October 29, 2020 (85 FR 

68503) (the NPRM). The NPRM was 

prompted by a determination that new 

or more restrictive airworthiness 

limitations are necessary, as specified in 

EASA AD 2020–0136, dated June 18, 

2020 (EASA AD 2020–0136). 

Actions Since the NPRM Was Issued 

Since the FAA issued the NPRM, the 

FAA has determined that new or more 

restrictive airworthiness limitations are 

necessary. 

The EASA, which is the Technical 

Agent for the Member States of the 

European Union, has issued EASA AD 

2020–0263, dated December 1, 2020 

(EASA AD 2020–0263) (also referred to 

as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for all Model ATR 42–400 and ATR 42– 

500 airplanes. EASA AD 2020–0263 

supersedes EASA AD 2020–0136. Model 

ATR 42–400 airplanes 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 airplanes in the 

applicability. EASA AD 2020–0263 

refers to ATR ATR42–400/–500, Time 

Limits Document (TL), Revision 14, 

dated July 7, 2020. Airplanes with an 

original airworthiness certificate or 

original export certificate of 


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Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 11171 

airworthiness issued after July 7, 2020, 

must comply with the airworthiness 

limitations specified as part of the 

approved type design and referenced on 

the type certificate data sheet; this AD, 

therefore, does not include those 

airplanes in the applicability. 

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 reduced structural 

integrity of the airplane. See the MCAI 

for additional background information. 

Related Service Information Under 1 

CFR Part 51 

EASA AD 2020–0263 describes new 

or more restrictive airworthiness 

limitations for airplane structures and 

safe life limits. 

This proposed AD would also require 

the following service information, 

which the Director of the Federal 

Register approved for incorporation by 

reference as of November 20, 2018 (83 

FR 52123, October 16, 2018). 

• ATR ATR42–400/–500, Time Limits 

Document (TL), Revision 11, dated May 

5, 2015. 

• ATR ATR42–400/–500 Time Limits 

Temporary Revision TR01/17, dated 

May 3, 2017. 

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. 

Comments 

The FAA gave the public the 

opportunity to participate in developing 

this proposed AD. The FAA received no 

comments on the NPRM or on the 

determination of the cost to the public. 

FAA’s Determination and Requirements 

of This SNPRM 

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 pertinent information and 

determined an unsafe condition exists 

and is likely to exist or develop on other 

products of the same type design. 

Certain changes described above 

expand the scope of the NPRM. As a 

result, the FAA has determined that it 

is necessary to reopen the comment 

period to provide additional 

opportunity for the public to comment 

on this SNPRM. 

Proposed AD Requirements 

This proposed AD would retain the 

requirements of AD 2018–20–14. This 

proposed AD would also require 

revising the existing maintenance or 

inspection program, as applicable, to 

incorporate new or more restrictive 

airworthiness limitations, which are 

specified in EASA AD 2020–0263 

described previously, as incorporated by 

reference. Any differences with EASA 

AD 2020–0263 are identified as 

exceptions in the regulatory text of this 

AD. 

This proposed AD would require 

revisions to certain operator 

maintenance documents to include new 

actions (e.g., inspections) and Critical 

Design Configuration Control 

Limitations (CDCCLs). Compliance with 

these actions and CDCCLs 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 

(n)(1) of this proposed AD. 

Costs of Compliance 

The FAA estimates that this proposed 

AD affects 9 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this proposed AD: 

The FAA estimates the total cost per 

operator for the retained actions from 

AD 2018–20–14 to be $7,650 (90 workhours × $85 per work-hour). 

The FAA has determined that revising 

the existing maintenance or inspection 

program takes an average of 90 workhours per operator, although the agency 

recognizes that this number may vary 

from operator to operator. In the past, 

the agency has estimated that this action 

takes 1 work-hour per airplane. 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. 

The FAA estimates the total cost per 

operator for the new proposed actions 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. 

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) 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. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

(AD) 2000–23–04 R1, Amendment 39– 

12174 (66 FR 19381, April 16, 2001); 

and AD 2018–20–14, Amendment 39– 

19448 (83 FR 52123, October 16, 2018); 

and 

■ b. Adding the following new AD: 


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ATR–GIE Avions de Transport Re ́gional: 

Docket No. FAA–2020–0973; Project 

Identifier MCAI–2020–01113–T. 

(a) Comments Due Date 

The FAA must receive comments by April 

12, 2021. 

(b) Affected Airworthiness Directives (ADs) 

(1) This AD replaces AD 2000–23–04 R1, 

Amendment 39–12174 (66 FR 19381, April 

16, 2001) (AD 2000–23–04 R1); and AD 

2018–20–14, Amendment 39–19448 (83 FR 

52123, October 16, 2018) (AD 2018–20–14). 

(2) This AD affects AD 2008–04–19 R1, 

Amendment 39–16069 (74 FR 56713, 

November 3, 2009) (AD 2008–04–19 R1); and 

AD 2015–26–09, Amendment 39–18357 (81 

FR 1483, January 13, 2016) (AD 2015–26–09). 

(c) Applicability 

This AD applies to ATR–GIE Avions de 

Transport Re ́gional Model ATR42–500 

airplanes, certificated in any category, with 

an original airworthiness certificate or 

original export certificate of airworthiness 

dated on or before July 7, 2020. 

(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 prevent reduced structural 

integrity of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Maintenance or Inspection 

Program Revision, With No Changes 

This paragraph restates the requirements of 

paragraph (g) of AD 2018–20–14, with no 

changes. For airplanes with an original 

airworthiness certificate or original export 

certificate of airworthiness dated on or before 

May 3, 2017: Within 90 days after November 

20, 2018 (the effective date of AD 2018–20– 

14), revise the maintenance or inspection 

program, as applicable, to incorporate the 

information specified in ATR ATR42–400/– 

500, Time Limits Document (TL), Revision 

11, dated May 5, 2015; and ATR ATR42–400/ 

–500 Time Limits Temporary Revision TR01/ 

17, dated May 3, 2017. The initial 

compliance time for accomplishing the tasks 

is at the applicable times specified in ATR 

ATR42–400/–500, Time Limits Document 

(TL), Revision 11, dated May 5, 2015; and 

ATR ATR42–400/–500 Time Limits 

Temporary Revision TR01/17, dated May 3, 

2017; or within 90 days after the November 

20, 2018; whichever occurs later, except for 

those certification maintenance requirement 

(CMR) tasks identified in figure 1 to 

paragraphs (g) and (h) of this AD. 

(h) Retained Initial Compliance Times for 

Certain CMR Tasks, With No Changes 

This paragraph restates the requirements of 

paragraph (h) of AD 2018–20–14, with no 

changes. For the CMR tasks listed in figure 

1 to paragraphs (g) and (h) of this AD, the 

initial compliance time for accomplishing the 

tasks is at the applicable time specified in 

ATR ATR42–400/–500 Time Limits 

Temporary Revision TR01/17, dated May 3, 

2017; or within the compliance time 

specified in figure 1 to paragraphs (g) and (h) 

of this AD; whichever occurs later. 

(i) Retained Restrictions on Alternative 

Actions, Intervals, and Critical Design 

Configuration Control Limitations (CDCCLs), 

With a New Exception 

This paragraph restates the requirements of 

paragraph (i) of AD 2018–20–14, with a new 

exception. Except as required by paragraph 

(l) of this AD, after the maintenance or 

inspection program, as applicable, has been 

revised as required by paragraph (g) of this 

AD, no alternative actions (e.g., inspections), 

intervals, and/or CDCCLs may be used unless 

the actions, intervals, and/or CDCCLs are 

approved as an alternative method of 

compliance (AMOC) in accordance with the 

procedures specified in paragraph (n)(1) of 

this AD. 

(j) New Maintenance or Inspection Program 

Revision 

Except as specified in paragraph (k) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2020–0263, dated 

December 1, 2020 (EASA AD 2020–0263). 

Accomplishing the maintenance or 

inspection program revision required by this 

paragraph terminates the requirements of 

paragraph (g) of this AD. 

(k) Exceptions to EASA AD 2020–0263 

(1) The requirements specified in 

paragraphs (1) and (2) of EASA AD 2020– 

0263 do not apply to this AD. 

(2) Paragraph (3) of EASA AD 2020–0263 

specifies revising ‘‘the approved AMP’’ 

within 12 months after its effective date, but 

this AD requires revising the existing 

maintenance or inspection program, as 

applicable, within 90 days after the effective 

date of this AD. 

(3) The initial compliance time for doing 

the tasks specified in paragraph (3) of EASA 

AD 2020–0263 is at the applicable 

‘‘thresholds’’ as incorporated by the 

requirements of paragraph (3) of EASA AD 

2020–0263, or within 90 days after the 

effective date of this AD, whichever occurs 

later. 

(4) The provisions specified in paragraphs 

(4) and (5) of EASA AD 2020–0263 do not 

apply to this AD. 

(5) The ‘‘Remarks’’ section of EASA AD 

2020–0263 does not apply to this AD. 

(l) New Provisions for Alternative Actions, 

Intervals, and CDCCLs 

After the maintenance or inspection 

program has been revised as required by 

paragraph (j) of this AD, no alternative 

actions (e.g., inspections), intervals, and 

CDCCLs are allowed unless they are 

approved as specified in the provisions of the 

‘‘Ref. Publications’’ section of EASA AD 

2020–0263. 

(m) Terminating Action for Other ADs 

Accomplishing the actions required by 

paragraph (g) or (j) of this AD terminates all 

requirements of the ADs specified in 

paragraphs (m)(1) and (2) of this AD for 

ATR–GIE Avions de Transport Re ́gional 

Model ATR42–500 airplanes only. 

(1) AD 2008–04–19 R1. 

(2) AD 2015–26–09. 


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Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 11173 

(n) Other FAA AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Large Aircraft 

Section, 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 responsible Flight 

Standards Office, as appropriate. If sending 

information directly to the Large Aircraft 

Section, International Validation Branch, 

send it to the attention of the person 

identified in paragraph (o)(4) of this AD. 

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

(i) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(ii) AMOCs approved previously for AD 

2018–20–14 are approved as AMOCs for the 

corresponding provisions of EASA AD 2020– 

0263 that are required by paragraph (j) of this 

AD. 

(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, Large Aircraft Section, 

International Validation Branch, FAA; or 

EASA; or ATR–GIE Avions de Transport 

Re ́gional’s EASA Design Organization 

Approval (DOA). If approved by the DOA, 

the approval must include the DOAauthorized signature. 

(o) Related Information 

(1) For information about EASA AD 2020– 

0263, contact the EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; telephone 

+49 221 8999 000; email ADs@

easa.europa.eu; internet 

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

EASA AD on the EASA website at https://

ad.easa.europa.eu. 

(2) For service information identified in 

this AD, contact ATR–GIE Avions de 

Transport Re ́gional, 1 Alle ́e Pierre Nadot, 

31712 Blagnac Cedex, France; telephone +33 

(0) 5 62 21 62 21; fax +33 (0) 5 62 21 67 18; 

email continued.airworthiness@atraircraft.com; http://www.atr-aircraft.com. 

(3) You may view this material 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. This material may be found 

in the AD docket on the internet at https:// 

www.regulations.gov by searching for and 

locating Docket No. FAA–2020–0973. 

(4) For more information about this AD, 

contact Shahram Daneshmandi, Aerospace 

Engineer, Large Aircraft Section, 

International Validation Branch, FAA, 2200 

South 216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3220; email 

Shahram.Daneshmandi@faa.gov. 

Issued on February 12, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03590 Filed 2–23–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0031; Project 

Identifier MCAI–2020–01420–T] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Canada Limited Partnership (Type 

Certificate Previously Held by C Series 

Aircraft Limited Partnership (CSALP); 

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 Airbus Canada Limited 

Partnership Model BD–500–1A10 and 

BD–500–1A11 airplanes. This proposed 

AD was prompted by reports of 

corrosion on the waste box, waste access 

doubler, and waste service door of the 

rear fuselage due to contamination from 

waste valve leakage. This proposed AD 

would require an inspection for 

corrosion of the waste box, waste access 

doubler, and waste service door, and 

corrective actions if necessary, as 

specified in a Transport Canada Civil 

Aviation (TCCA) AD, which is proposed 

for incorporation by reference. 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 April 12, 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 material that will be incorporated 

by reference (IBR) in this AD, contact 

TCCA, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, 

CANADA; telephone 888–663–3639; 

email AD-CN@tc.gc.ca; internet https:// 

tc.canada.ca/en/aviation. You may view 

this IBR material 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 in the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0031. 

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– 

0031; 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; 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–2021–0031; Project Identifier 

MCAI–2020–01420–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. 


khammond on DSKJM1Z7X2PROD with PROPOSALS