11158 Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 

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: 

Airbus SAS: Docket No. FAA–2021–0028; 

Project Identifier MCAI–2020–01516–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) action by April 

12, 2021. 

(b) Affected Airworthiness Directives (ADs) 

None. 

(c) Applicability 

This AD applies to all Airbus SAS Model 

A319–171N airplanes, Model A320–271N, 

–272N, and –273N airplanes, and Model 

A321–271N, –272N, –271NX, and –272NX 

airplanes, certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 71, Powerplant. 

(e) Reason 

This AD was prompted by a report 

indicating that during a full scale fatigue test 

of the forward engine mounts, premature 

wear was identified on the forward engine 

mount shackle assemblies; in addition, 

during bearing replacement, the bearing lock 

washer was found broken. The FAA is 

issuing this AD to address premature wear 

and broken bearing lock washers at the 

forward engine mounts, which could lead to 

overload of the forward engine mount beams 

and engine mount failure, with consequent 

in-flight engine detachment, and possibly 

result in reduced controllability of the 

airplane. 

(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, European Union Aviation 

Safety Agency (EASA) AD 2020–0250, dated 

November 11, 2020 (EASA AD 2020–0250). 

(h) Exceptions to EASA AD 2020–0250 

(1) Where EASA AD 2020–0250 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

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

2020–0250 does not apply to this AD. 

(i) 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 (j)(2) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 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, Large Aircraft Section, 

International Validation Branch, FAA; or 

EASA; or Airbus SAS’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(3) Required for Compliance (RC): Except 

as required by paragraph (i)(2) of this AD, if 

any service information contains procedures 

or tests that are identified as RC, those 

procedures and tests must be done to comply 

with this AD; any procedures or tests that are 

not identified as RC are recommended. Those 

procedures and tests that are not identified 

as RC may be deviated from using accepted 

methods in accordance with the operator’s 

maintenance or inspection program without 

obtaining approval of an AMOC, provided 

the procedures and tests identified as RC can 

be done and the airplane can be put back in 

an airworthy condition. Any substitutions or 

changes to procedures or tests identified as 

RC require approval of an AMOC. 

(j) Related Information 

(1) For information about EASA AD 2020– 

0250, 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. 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–2021–0028. 

(2) For more information about this AD, 

contact Sanjay Ralhan, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 216th 

St., Des Moines, WA 98198; telephone and 

fax 206–231–3223; email Sanjay.Ralhan@

faa.gov. 

Issued on February 4, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–03581 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–2019–0862; Product 

Identifier 2019–NM–121–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company 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 for certain The Boeing 

Company Model 767–200, –300, –300F, 

and –400ER series airplanes. This action 

revises the notice of proposed 

rulemaking (NPRM) by adding airplanes 

to the applicability and proposing to 

require revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

The FAA is proposing this 

airworthiness directive (AD) to address 

the unsafe condition on these products. 

Since these actions would impose an 

additional burden over that 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 November 7, 2019 (84 FR 

60007), is reopened. 

The FAA must receive comments on 

this SNPRM 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. 


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For service information identified in 

this SNPRM, contact Boeing 

Commercial Airplanes, Attention: 

Contractual & Data Services (C&DS), 

2600 Westminster Blvd., MC 110–SK57, 

Seal Beach, CA 90740–5600; telephone 

562–797–1717; internet https://

www.myboeingfleet.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. 

It is also available on the internet at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2019–0862. 

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–2019– 

0862; 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. 

FOR FURTHER INFORMATION CONTACT: 

Wayne Lockett, Aerospace Engineer, 

Airframe Section, FAA, Seattle ACO 

Branch, 2200 South 216th St., Des 

Moines, WA 98198; phone and fax: 206– 

231–3524; email: wayne.lockett@

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–2019–0862; Product Identifier 

2019–NM–121–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 SNPRM 

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 SNPRM, 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 SNPRM. Submissions containing 

CBI should be sent to Wayne Lockett, 

Aerospace Engineer, Airframe Section, 

FAA, Seattle ACO Branch, 2200 South 

216th St., Des Moines, WA 98198; 

phone and fax: 206–231–3524; email: 

wayne.lockett@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 an NPRM to amend 

14 CFR part 39 by adding an AD that 

would apply to certain The Boeing 

Company Model 767–200, –300, –300F, 

and –400ER series airplanes. The NPRM 

published in the Federal Register on 

November 7, 2019 (84 FR 60007). The 

NPRM was prompted by a 

determination that new or more 

restrictive airworthiness limitations are 

necessary. The NPRM proposed to 

require revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

Actions Since the NPRM Was Issued 

Since the FAA issued the NPRM, the 

manufacturer has issued new or more 

restrictive airworthiness limitations, 

and the FAA has determined it is 

necessary to mandate those limitations. 

In addition, the FAA has determined 

that those new limitations apply to more 

airplanes than were included in the 

NPRM. 

Comments 

The FAA gave the public the 

opportunity to comment on the NPRM. 

The following presents the comments 

received on the NPRM and the FAA’s 

response to each comment. 

Request To Clarify Compliance Time 

for Paragraph (h)(2) of the Proposed AD 

Boeing, American Airlines, and 

United Parcel Service (UPS) requested 

that the FAA clarify the compliance 

time for the actions described in 

paragraph (h)(2) of the proposed AD. 

The commenters noted that no 

compliance time had been given for 

obtaining the revised inspection 

intervals as directed in that paragraph, 

and recommended a period of 24 

months. 

The FAA agrees to clarify that for any 

horizontal stabilizer pivot fitting lug 

(SSI 55–10–I13A) on which a lug bore 

oversize repair has been accomplished, 

the compliance time for obtaining 

revised inspection intervals is within 24 

months after the effective date of this 

AD, which is the compliance time for 

revising the maintenance or inspection 

program as specified in paragraph (g) of 

this proposed AD. The FAA has revised 

paragraph (h)(2) of this proposed AD to 

include the specified compliance time. 

Request To Clarify New Inspection 

Intervals 

American Airlines asked that 

paragraph (h)(2) of the proposed AD be 

further clarified to state that the lug bore 

oversize repairs must be re-evaluated 

and revised intervals must be obtained, 

as applicable. American Airlines 

reasoned that revised inspection 

intervals might not be required after reevaluation, based on language in the 

Differences Between This Proposed AD 

and the Service Information section of 

the proposed AD that stated repairs 

‘‘will require further evaluation to 

determine the applicable inspection 

interval to be incorporated.’’ 

The FAA agrees with the commenter’s 

request. The FAA acknowledges that 

upon further evaluation of the repair, it 

is possible certain intervals might not be 

revised, and the inspection program 

provided in the original approved 

alternative method of compliance 

(AMOC) for that repair would still be 

acceptable. The FAA has revised 

paragraph (h)(2) of this proposed AD to 

clarify that the requirement is to ‘‘reevaluate the repair and obtain revised 

inspection intervals, as applicable.’’ 

Request To Modify Applicability 

Paragraph of the Proposed AD 

Aviation Partners Boeing (APB) 

requested that paragraph (c) of the 

proposed AD be amended to include 

language advising that a ‘‘change in 

product’’ AMOC approval may be 

needed for airplanes with Supplemental 

Type Certificate (STC) ST01920SE 

installed. APB stated that installation of 


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STC ST01920SE affects the ability to 

accomplish some of the actions required 

by the proposed AD. APB noted that it 

is in the process of revising the APB 

airworthiness limitations (AWL) and 

damage tolerance rating (DTR) Check 

Form Supplements to define the 

alternative inspections and/or 

inspection intervals required for the 

structural AWLs affected by the revised 

Boeing service information. APB noted 

that its documents are ‘‘alternative’’ to 

the Boeing service information and that 

APB planned to apply for an AMOC to 

the proposed AD if it is adopted as a 

final rule. 

The FAA agrees with the request to 

add a paragraph providing the specified 

information. The FAA has redesignated 

paragraph (c) of the proposed AD (in the 

NPRM) as paragraph (c)(1) of this 

proposed AD and added paragraph 

(c)(2) to this proposed AD to advise 

operators that installation of STC 

ST01920SE affects the ability to 

accomplish some of the actions required 

by this AD, and that an AMOC may be 

required in order to comply with the 

requirements of 14 CFR 39.17. 

Additionally, the FAA emphasizes 

that for any airplane that is modified by 

an STC that affects any structurally 

significant item (SSI) inspections, an 

AMOC approval request is necessary to 

comply with the requirements of 14 CFR 

39.17. 

Request To Clarify the Intent of 

Paragraph (l)(4) of the Proposed AD 

American Airlines requested that the 

FAA clarify the intent of the last 

sentence of paragraph (l)(4) of the 

proposed AD and confirm that operators 

are not required to re-notify principal 

inspectors, as specified in paragraph 

(l)(2) of the proposed AD, or to revise 

previously approved AMOCs. The 

commenter stated that the final sentence 

of the paragraph seems to nullify the 

guidance of the previous sentence. 

The FAA agrees to clarify the intent 

of paragraph (l)(4) of this proposed AD. 

The intent of paragraph (l)(4) of this 

proposed AD is to allow previously 

approved AMOCs only for repairs and 

alterations. The last sentence of 

paragraph (l)(4) of this proposed AD is 

intended to advise that revisions of the 

AWL prior to the July 2020 revision, 

that were approved as an AMOC to AD 

2014–14–04, Amendment 39–17899 (79 

FR 44672, August 1, 2014) (AD 2014– 

14–04), cannot be used to comply with 

any actions in this proposed AD. In 

addition, for existing AMOCs to AD 

2003–18–10, Amendment 39–13301 (68 

FR 53503, September 11, 2003) (AD 

2003–18–10), and AD 2014–14–04, 

operators are not required to re-notify 

FAA personnel in accordance with 

paragraph (l)(2) of this proposed AD. 

Finally, existing AMOCs to ADs 2003– 

18–10 and 2014–14–04 are not required 

to be revised to specifically reference 

this proposed AD. This proposed AD 

has not been changed with regard to this 

request. 

Request To Clarify Paragraph (l)(5) of 

the Proposed AD 

American Airlines requested 

clarification of the compliance time for 

the requirements of paragraph (l)(5) of 

the proposed AD. American Airlines 

asserted that for a recently 

accomplished repair approved by the 

The Boeing Company Organization 

Designation Authorization (ODA) for 

Stage I, and currently pending damage 

tolerance evaluation (DTE) (Stage II/III), 

the compliance time should align with 

the standard Boeing DTE timeline of 24 

months from Stage I approval to 

completion of Stage I, II, and III 

approval. American Airlines also 

requested confirmation that repair 

approvals obtained in accordance with 

paragraph (l)(5) of the proposed AD do 

not require reference to the proposed 

AD, since those approvals were issued 

prior to the effective date of this AD. 

The FAA does not agree with the 

request to allow repairs in progress to 

use the 24-month Boeing DTE timeline. 

To use the provisions specified in 

paragraph (l)(5) of this proposed AD, the 

repair must be completed before the 

effective date of this AD. Repairs 

accomplished before the effective date 

of this AD that do not meet the 

conditions specified in paragraphs 

(l)(5)(ii) and (iii) of this proposed AD 

have until when the next AD-required 

inspection is due to obtain any AMOC 

that may be needed. 

Regarding the repair approval request, 

the FAA confirms that the approvals do 

not need to refer to this AD. The FAA 

has not changed this proposed AD 

regarding this issue. 

Request To Clarify ‘‘Next Wing Tank 

Entry’’ 

UPS requested clarification of the 

term ‘‘next wing tank entry’’ as used in 

paragraph (h)(1) of the proposed AD. 

The commenter stated that the term is 

unnecessary and adds confusion. 

The FAA agrees with the request to 

clarify what was meant by ‘‘next wing 

tank entry.’’ The intent is to allow 

accomplishment of the sealant removal 

task prior to the next accomplishment of 

the specific maintenance planning 

document task, and not during a fuel 

tank entry for non-AWL-related reasons. 

The FAA has removed ‘‘next fuel tank 

entry’’ from the exception in paragraph 

(h)(1) of this proposed AD and replaced 

it with ‘‘next accomplishment of the 

specific Maintenance Planning 

Document (MPD) task.’’ 

Request To Change the Grace Period in 

Paragraph (h)(1) of the Proposed AD 

UPS requested that the grace period in 

paragraph (h)(1) of the proposed AD be 

changed from 6 years to 8 years. UPS 

stated it considers that the FAA is 

providing accommodations for the tasks 

that can be repeated at intervals up to 

4C, considering an 18-month 1C check 

interval. However, UPS noted that per 

Subsection B, ‘‘Structural Inspections’’ 

of Boeing 767–200/300/300F/400ER 

Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020, a 1C 

check is defined as 3,000 flight cycles, 

or 24 months, or 9,000 flight hours, 

whichever occurs first. UPS stated that 

an 8-year grace period is more 

acceptable to meet the intent of the 

accommodation by the FAA. 

The FAA disagrees with the requested 

grace period of ‘‘not to exceed 8 years’’ 

because the 6-year grace period does 

meet the FAA’s intent to provide a grace 

period for certain instructions to do 

certain actions, In addition, the 

commenter did not provide adequate 

supporting documentation to justify the 

escalation. All MPD tasks listed in the 

Excess Sealant Table of the AWL 

document have a baseline repetitive 

inspection interval of 6 years. Even 

though these tasks may have the option 

for escalation of the inspection 

intervals, each operator addresses 

escalation differently, and may request 

an escalation using the AMOC process. 

The FAA has not changed this proposed 

AD regarding this issue. 

Request To Allow an Acceptable 

Method of Compliance for Certain 

Tasks 

FedEx Express requested that the FAA 

incorporate Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, 

dated April 2019, as another acceptable 

method of compliance for the proposed 

AD. The commenter noted that certain 

requirements of Boeing 767–200/300/ 

300F/400ER Airworthiness Limitations 

(AWLs), D622T001–9–01, dated June 

2019, cannot be accomplished due to 

specific line number differences in 

configuration as a result of Material 

Review Board (MRB) actions. 

The FAA agrees with the request. 

However, the FAA notes that Boeing has 

released a newer version of the 

document mentioned by the commenter. 

The FAA has therefore added paragraph 

(h)(4) to this proposed AD to specify 

that revising the existing maintenance 


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or inspection program, as applicable, to 

incorporate the information specified in 

Boeing 767–200/300/300F/400ER 

Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, 

dated August 2020, is an acceptable 

method of compliance with paragraph 

(g) of this proposed AD for the tasks 

specified in that document only. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed the following 

service information, which describes 

airworthiness limitations for structural 

inspections and structural safe life 

limits among other limitations. These 

documents are distinct since they apply 

to different configurations. 

• Boeing 767–200/300/300F/400ER 

Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020. 

• Boeing 767–200/300/300F/400ER 

Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, 

dated August 2020. 

The FAA also reviewed Boeing 767– 

200/300/300F/400ER Damage Tolerance 

Rating (DTR) Check Form Document, 

D622T001–DTR, dated February 2020. 

This service information includes the 

DTR check forms and the procedure for 

their use. 

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 

The FAA is proposing this AD 

because the agency evaluated all the 

relevant information and determined 

the unsafe condition described 

previously is likely to exist or develop 

in 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 Requirements of This SNPRM 

This SNPRM would require revising 

the existing maintenance or inspection 

program, as applicable, to incorporate 

new or more restrictive airworthiness 

limitations. This proposed AD also 

would require sending the inspection 

results to Boeing. 

Costs of Compliance 

The FAA estimates that this AD 

affects 542 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

The FAA has determined that revising 

the existing maintenance or inspection 

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

recognizes that this number may vary 

from operator to operator. In the past, 

the FAA 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. Therefore, the FAA estimates 

the total cost per operator to be $7,650 

(90 work-hours × $85 per work-hour). 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Action Labor cost Parts cost Cost per 

product 

Reporting ..................................................... 1 work-hour × $85 per hour = $85 .................................................................................. $0 $85 

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 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 control 

number for the collection of information 

required by this proposed AD is 2120– 

0056. The paperwork cost associated 

with this proposed AD has been 

detailed in the Costs of Compliance 

section of this document and includes 

time for reviewing instructions, as well 

as completing and reviewing the 

collection of information. Therefore, all 

reporting associated with this proposed 

AD is mandatory. Comments concerning 

the accuracy of this burden and 

suggestions for reducing the burden 

should be directed 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. 


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§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

The Boeing Company: Docket No. FAA– 

2019–0862; Product Identifier 2019– 

NM–121–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) action by April 

12, 2021. 

(b) Affected ADs 

This AD affects AD 2014–14–04, 

Amendment 39–17899 (79 FR 44672, August 

1, 2014) (AD 2014–14–04). 

(c) Applicability 

(1) This AD applies to The Boeing 

Company Model 767–200, –300, –300F, and 

–400ER series airplanes, certificated in any 

category, line numbers 1 through 1218 

inclusive. 

(2) Installation of Supplemental Type 

Certificate (STC) ST01920SE affects the 

ability to accomplish some of the actions 

required by this AD. Therefore, for airplanes 

on which STC ST01920SE is installed, a 

‘‘change in product’’ alternative method of 

compliance (AMOC) approval may be 

necessary to comply with the requirements of 

14 CFR 39.17. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight Controls; 52, Doors; 

53, Fuselage; 54, Nacelles/pylons; 55, 

Stabilizers; 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by a determination 

that new or more restrictive airworthiness 

limitations (AWLs) are necessary. The FAA 

is issuing this AD to address inadequate 

AWL and damage tolerance rating (DTR) 

values in the maintenance or inspection 

program that reduce the probability of 

detection for foreseeable fatigue cracking of 

structurally significant items (SSIs). This 

condition, if not addressed, could result in 

the loss of limit load capability of an SSI as 

well as loss of continued safe flight and 

landing of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Maintenance or Inspection Program 

Revision 

Within 24 months after the effective date 

of this AD, revise the existing maintenance 

or inspection program, as applicable, to 

incorporate the information specified in 

Boeing 767–200/300/300F/400ER 

Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020; and Boeing 

767–200/300/300F/400ER Damage Tolerance 

Rating (DTR) Check Form Document, 

D622T001–DTR, dated February 2020. Except 

as specified in paragraph (h) of this AD, the 

initial compliance time for doing the tasks is 

at the time specified in Boeing 767–200/300/ 

300F/400ER Airworthiness Limitations 

(AWLs), D622T001–9–01, dated July 2020; 

and Boeing 767–200/300/300F/400ER 

Damage Tolerance Rating (DTR) Check Form 

Document, D622T001–DTR, dated February 

2020; or within 24 months after the effective 

date of this AD; whichever occurs later. 

(h) Exceptions 

(1) Where Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020, specifies 

compliance times (‘‘thresholds’’) for wing 

tank sealant removal and ensuring sealant 

location limits are met, these actions must be 

accomplished within the compliance times 

specified in Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020; or at or 

before the next accomplishment of the 

specific Maintenance Planning Document 

(MPD) task, but no later than 6 years after the 

effective date of this AD; whichever occurs 

later. 

(2) For any horizontal stabilizer pivot 

fitting lug (SSI 55–10–I13A) on which a lug 

bore oversize repair has been accomplished: 

Within 24 months after the effective date of 

this AD, re-evaluate the repair and obtain 

revised inspection intervals, as applicable, in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

(3) Where Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations (AWLs), 

D622T001–9–01, dated July 2020; and Boeing 

767–200/300/300F/400ER Damage Tolerance 

Rating (DTR) Check Form Document, 

D622T001–DTR, dated February 2020; 

specify to submit reports within 10 days, 

those reports may be submitted within 10 

days after the airplane is returned to service. 

(4) For airplanes having line numbers 

identified in Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, dated 

August 2020: Revising the existing 

maintenance or inspection program, as 

applicable, to incorporate the information 

specified in Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, dated 

August 2020, is an acceptable method of 

compliance with paragraph (g) of this AD for 

the tasks specified in Boeing 767–200/300/ 

300F/400ER Airworthiness Limitations— 

Line Number Specific, D622T001–9–02, 

dated August 2020, only. The initial 

compliance time for doing the tasks is at the 

time specified in Boeing 767–200/300/300F/ 

400ER Airworthiness Limitations—Line 

Number Specific, D622T001–9–02, dated 

August 2020; or within 24 months after the 

effective date of this AD; whichever occurs 

later. For all other tasks specified in the 

service information identified in paragraph 

(g) of this AD, the requirements of paragraph 

(g) of this AD remain fully applicable and 

must be complied with. 

(i) 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 or 

intervals are approved as an alternative 

method of compliance (AMOC) in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

(j) Terminating Action for AD 2014–14–04 

Accomplishing the actions required by this 

AD terminates all requirements of AD 2014– 

14–04. 

(k) Paperwork Reduction Act Burden 

Statement 

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 be 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. 

(l) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle 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 the attention of 

the person identified in paragraph (m)(1) of 

this AD. Information may be emailed to: 9- 

ANM-Seattle-ACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair, 

modification, or alteration required by this 

AD if it is approved by The Boeing Company 

Organization Designation Authorization 

(ODA) that has been authorized by the 

Manager, Seattle ACO Branch, to make those 

findings. To be approved, the repair method, 

modification deviation, or alteration 

deviation must meet the certification basis of 

the airplane, and the approval must 

specifically refer to this AD. 

(4) AMOCs for repairs and alterations 

approved previously for AD 2003–18–10, 

Amendment 39–13301 (68 FR 53503, 

September 11, 2003) (AD 2003–18–10), and 

AD 2014–14–04 are approved as AMOCs for 

the corresponding actions specified in this 

AD. All other AMOCs for AD 2003–18–10 

and AD 2014–14–04 are not approved as 

AMOCs for this AD. 

(5) Repairs done before the effective date 

of this AD that meet the conditions specified 


khammond on DSKJM1Z7X2PROD with PROPOSALS
Federal Register / Vol. 86, No. 35 / Wednesday, February 24, 2021 / Proposed Rules 11163 

in paragraphs (l)(5)(i), (ii), and (iii) of this AD 

are acceptable methods of compliance for the 

repaired area where the inspections of the 

baseline structure cannot be accomplished. 

(i) The repair was approved under both 14 

CFR 25.571 and 14 CFR 26.43(d) by The 

Boeing Company ODA that has been 

authorized by the Manager, Seattle ACO 

Branch, FAA, to make those findings. 

(ii) The repair approval provides an 

inspection program (inspection threshold, 

method, and repetitive interval). 

(iii) Operators revised their maintenance or 

inspection program, as applicable, to include 

the inspection program (inspection 

threshold, method, and repetitive interval) 

for the repair. 

(m) Related Information 

(1) For more information about this AD, 

contact Wayne Lockett, Aerospace Engineer, 

Airframe Section, FAA, Seattle ACO Branch, 

2200 South 216th St., Des Moines, WA 

98198; phone and fax: 206–231–3524; email: 

wayne.lockett@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Contractual & Data 

Services (C&DS), 2600 Westminster Blvd., 

MC 110–SK57, Seal Beach, CA 90740–5600; 

telephone 562–797–1717; internet https://

www.myboeingfleet.com. You may view this 

referenced service information at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

Issued on January 20, 2021. 

Gaetano A. Sciortino, 

Deputy Director for Strategic Initiatives, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2021–03595 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–2021–0097; Project 

Identifier MCAI–2020–01334–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 BD– 

100–1A10 airplanes. This proposed AD 

was prompted by reports of DC motor 

pump (DCMP) failures during 

production flight tests. This proposed 

AD would require installing a 

redesigned DCMP electric motor 

assembly. 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 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 http://

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– 

0097; 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: 

Steven Dzierzynski, Aerospace 

Engineer, Avionics and Electrical 

Systems Services Section, FAA, New 

York ACO Branch, 1600 Stewart 

Avenue, Suite 410, Westbury, NY 

11590; phone: 516–228–7367; 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–2021–0097; Project Identifier 

MCAI–2020–01334–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 Steven Dzierzynski, 

Aerospace Engineer, Avionics and 

Electrical Systems Services Section, 

FAA, New York ACO Branch, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590; phone: 516–228–7367; fax: 

516–794–5531; email: 9-avs-nyaco-cos@

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 

Transport Canada Civil Aviation 

(TCCA), which is the aviation authority 

for Canada, has issued TCCA AD CF– 

2020–31, dated September 23, 2020 

(TCCA AD CF–2020–31) (referred to 

after this as the Mandatory Continuing 

Airworthiness Information, or the 

MCAI), to correct an unsafe condition 

for certain Bombardier, Inc., Model BD– 

100–1A10 airplanes. You may examine 

the MCAI in the AD docket on the 

internet at https://www.regulations.gov 


khammond on DSKJM1Z7X2PROD with PROPOSALS