[Federal Register Volume 86, Number 34 (Tuesday, February 23, 2021)]
[Rules and Regulations]
[Pages 10790-10796]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-03567]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2020-0580; Product Identifier 2020-NM-052-AD; Amendment 
39-21389; AD 2021-02-06]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2019-02-
03, which applied to all The Boeing Company Model 787-8, 787-9, and 
787-10 airplanes. AD 2019-02-03 required revising the existing 
maintenance or inspection program, as applicable, to incorporate new or 
more restrictive airworthiness limitations. This AD retains the 
requirements of AD 2019-02-03 and requires incorporation of an 
airworthiness limitation that applies only to certain airplanes. This 
AD also requires replacing or modifying certain engine fire control 
panels, which terminates the revised airworthiness limitation added in 
this final rule when a certain condition is met. Since the FAA issued 
AD 2019-02-03, the manufacturer has developed a new fire handle design 
that will eliminate the need for the airworthiness limitations required 
by AD 2019-02-03. The FAA is issuing this AD to address the unsafe 
condition on these products.

DATES: This AD is effective March 30, 2021.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of March 30, 
2021.

ADDRESSES: For service information identified in this final rule, 
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-2020-0580.

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-
0580; 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 final rule, any comments received, and other information. The 
address for Docket Operations is U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Tak Kobayashi, Aerospace Engineer, 
Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des 
Moines, WA 98198; phone and fax: 206-231-3553; email: 
[email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2019-02-03, Amendment 39-19550 (84 FR 2437, 
February 7, 2019) (AD 2019-02-03). AD 2019-02-03 applied to all The 
Boeing Company Model 787-8, 787-9, and 787-10 airplanes. The NPRM 
published in the Federal Register on July 15, 2020 (85 FR 42749). The 
NPRM was prompted by reports of warpage of internal engine fire handle 
components that can cause binding and prevent proper operation, and by 
the development of a new fire handle design that will eliminate the 
need for the airworthiness limitations required by AD 2019-02-03. The 
NPRM proposed to retain the requirements of AD 2019-02-03 and to 
require incorporation of an airworthiness limitation that applies only 
to certain airplanes. The NPRM also proposed to require replacing or 
modifying certain engine fire control panels, which would terminate the 
revised airworthiness limitation added in this final rule when a 
certain condition is met. The FAA is issuing this AD to address a 
latent failure of the engine fire handle, which could result in the 
inability to extinguish an engine fire that, if uncontrollable, could 
lead to wing failure.

Comments

    The FAA gave the public the opportunity to participate in 
developing this AD. The following presents the comments received on the 
NPRM and the FAA's response to each comment.

Request To Expand Approved Alternative Methods of Compliance (AMOCs)

    Boeing asked that paragraph (o)(4) of the proposed AD (paragraph 
(p)(4) of this AD), which specifies ``AMOCs approved previously for AD 
2019-02-03 are approved as AMOCs for the corresponding provisions of 
paragraph (g) of this AD,'' also include approval of AMOCs for the 
corresponding provisions of paragraph (k) of the proposed AD. Boeing 
stated that approved AMOC RA-19-00263 (Boeing letter requesting an AMOC 
for AD 2019-02-03) provides inspection instructions equivalent to 
Airworthiness Limitation 28-AWL-FIRE in figure 1 to paragraph (g) of 
the proposed AD. Boeing added that the inspection instructions of 28-
AWL-FIRE in figure 1 to paragraph (g) of the proposed AD and in figure 
2 to paragraph (k) of the proposed AD are identical.
    The FAA partially agrees with the commenter's request. The FAA 
previously approved Boeing Alert Requirements Bulletin B787-81205-
SB260007-00 RB, Issue 001, dated February 22, 2019, as an AMOC to the 
requirements of paragraph (g) of AD 2019-02-03. The inspection 
instructions provided in Boeing Alert Requirements Bulletin B787-81205-
SB260007-00 RB, Issue 001, dated February 22, 2019, are equivalent to 
28-AWL-FIRE in figure 1 to paragraph (g) of this AD and in figure 2 to 
paragraph (k) of this AD. Because paragraph (k) is a new requirement of 
this AD, the FAA has instead added the action as an alternative 
terminating action, paragraph (l) of this AD, for the repetitive 
inspections for airplanes equipped with an engine fire control panel 
having part number (P/N)

[[Page 10791]]

412600-001 or an engine fire shutoff switch having P/N 417000-101 or P/
N 417000-102.

Request To Revise Parts Installation Prohibition Paragraph or Extend 
Compliance Time

    American Airlines, All Nippon Airways (ANA), and United Airlines 
asked that the FAA revise paragraph (n) of the proposed AD to continue 
to allow, for a limited time, the installation of the engine fire 
handle with the part numbers on which an unsafe condition has been 
identified after the effective date of the AD. American Airlines and 
United Airlines asked that installing the parts be allowed for 15 
months after the effective date of the AD, which is consistent with the 
referenced service information. ANA asked that it be allowed to install 
the parts until the engine fire handle with new part numbers is 
installed in accordance with paragraph (i) of the proposed AD. ANA also 
asked that the compliance time specified in paragraph (i) of the 
proposed AD be extended to 24 months after the effective date of the 
AD.
    American Airlines stated that this change is necessary because the 
repetitive inspections of the engine fire handle with the part numbers 
on which an unsafe condition has been identified remain in place until 
those part numbers are replaced by the new part numbers. American 
Airlines added that they would need a full panel or two new switches if 
there were findings of failed fire handles because they can't mix old 
and new parts. American Airlines, ANA, and United Airlines expressed 
their concern regarding parts availability due to limited supply. ANA 
stated that the supply of the engine fire handles with new part numbers 
is insufficient worldwide due to the Coronavirus Disease 2019 (COVID-
19).
    The FAA partially agrees with the commenters' requests, based on 
the limited supply of new part numbers available due to extenuating 
circumstances. The FAA has received a number of reports of failed 
engine fire handles found during the repetitive inspections. The 
frequency of failures found in service, and the provisions of the 
``Parts Installation Prohibition'' of paragraph (n) of the proposed AD, 
could have forced operators to install the new part numbers from a 
limited supply before reaching the compliance time in paragraph (i) of 
this AD. Furthermore, as American Airlines stated, the repetitive 
inspections required by 28-AWL-FIRE remain in place until a fire handle 
with new part numbers is installed. The repetitive inspections do not 
eliminate the latent failure of the engine fire handle, but they will 
limit the number of flights the airplanes can operate with a failed 
engine fire handle. Since paragraph (n) of the proposed AD would have 
applied to all airplanes including those airplanes delivered with the 
engine fire control panel having the new part number required by 
paragraph (i) of this AD, and since it is necessary to prohibit the 
replacement of the new part number with the old part number for those 
airplanes that are not covered by paragraph (i) of this AD, the FAA has 
revised paragraph (o) of this AD (paragraph (n) of the proposed AD) to 
include an exception for airplanes identified in Boeing Requirements 
Bulletin B787-81205-SB260008-00 RB, Issue 001, dated March 10, 2020. 
For airplanes affected by paragraph (i) of this AD, once operators 
comply with the actions required by paragraph (i) of this AD by 
installing parts with new part numbers, operators must continue to 
maintain the airplane configuration compliant with the AD requirements. 
For airplanes delivered with the fire control panel having the new part 
number, paragraph (o) of this AD prohibits the replacement of the new 
part numbers with the old part numbers on which the unsafe condition 
was identified.
    The FAA does not agree with ANA's request to revise the compliance 
time in paragraph (i) of this AD to 24 months. Since the level of 
impact of parts supply may vary for each operator, we are unable to 
determine an appropriate change to the compliance time in paragraph (i) 
of this AD that will result in a minimal impact on safety and on 
operators' ability to comply with the AD requirements. Therefore, 
operators that encounter limited parts supply that could hinder the 
ability to meet the requirements of paragraph (i) of this AD within the 
compliance time indicated should request an AMOC to extend this 
compliance time. If data are provided to show that the extended 
compliance time addresses the unsafe condition, operators may request 
approval of an AMOC under the provisions of paragraph (p) of this AD. 
The FAA has not changed this AD regarding this issue.

Request To Revise Airworthiness Limitation 28-AWL-FIRE

    The Air Line Pilots Association, International (ALPA) asked that 
the FAA revise Airworthiness Limitation 28-AWL-FIRE to remove the 
language that allows the flightcrew to perform an operational check of 
the engine fire handle. ALPA stated that because the proposed AD 
retains the actions required by AD 2019-02-03, the proposed AD also 
retains the allowance for the flightcrew to perform the engine fire 
handle operational check in a manner approved by the principal 
operations inspector in lieu of being performed by specifically trained 
maintenance personnel per the procedures in 28-AWL-FIRE. ALPA 
previously highlighted concern with the flightcrew conducting the check 
required by AD 2019-02-03, and reiterated that concern in comments on 
the NPRM. ALPA noted that without specific training to flightcrews, the 
opportunity exists for the operational check to be performed 
inaccurately. ALPA concluded that to ensure that the check is effective 
until the terminating action is accomplished, consistent procedures 
should be followed and documented by appropriately trained maintenance 
personnel, as specified in the proposed AD.
    The FAA does not agree with the commenter's request. Airworthiness 
Limitation 28-AWL-FIRE includes an allowance for the flightcrew to 
perform an operational check of the engine fire handle since the 
inspection interval is relatively short and the inspection procedure is 
relatively straightforward. Based on this allowance, operators can 
develop the procedures for the flightcrew to perform an operational 
check in a timely manner. Operators must ensure that the operational 
check required by 28-AWL-FIRE is accurately performed by the flightcrew 
in order for the procedures to be approved by the principal operations 
inspector. The FAA has not changed this AD in this regard.

Conclusion

    The FAA reviewed the relevant data, considered the comments 
received, and determined that air safety and the public interest 
require adopting this AD with the changes described previously, and 
minor editorial changes. The FAA has determined that these minor 
changes:
     Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    The FAA also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed Boeing Requirements Bulletin B787-81205-SB260008-
00 RB, Issue 001, dated March 10, 2020. The service information 
describes procedures for replacing the

[[Page 10792]]

engine fire control panel with a new or modified panel.
    The FAA also reviewed Boeing Requirements Bulletin B787-81205-
SB260007-00 RB, Issue 001, dated February 22, 2019. The service 
information describes procedures for performing repetitive operational 
checks of the engine fire handle.
    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.

Costs of Compliance

    The FAA estimates that this AD affects 122 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:
    The FAA estimates the total cost per operator for the retained 
actions from AD 2019-02-03 to be $7,650 (90 work-hours x $85 per work-
hour).
    The FAA has determined that revising the existing maintenance or 
inspection program takes an average of 90 work-hours per operator, 
although the agency recognizes that this number may vary from operator 
to operator. Since operators incorporate maintenance or inspection 
program changes for their affected fleet(s), the FAA has determined 
that a per-operator estimate is more accurate than a per-airplane 
estimate.
    The FAA estimates the total cost per operator for the new 
maintenance or inspection program revision to be $7,650 (90 work-hours 
x $85 per work-hour).

                            Estimated Costs for Required Replacement or Modification
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Replacement or modification...........  2 work-hours x $85 per            $5,000          $5,170        $630,740
                                         hour = $170.
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some or all of the costs of this AD 
may be covered under warranty, thereby reducing the cost impact on 
affected individuals. The FAA does not control warranty coverage for 
affected individuals. As a result, the FAA has included all known costs 
in our cost estimate.

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 has determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will 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 that this AD:
    (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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by:
0
a. Removing Airworthiness Directive (AD) 2019-02-03, Amendment 39-19550 
(84 FR 2437, February 7, 2019), and
0
b. Adding the following new AD:

2021-02-06 The Boeing Company: Amendment 39-21389; Docket No. FAA-
2020-0580; Product Identifier 2020-NM-052-AD.

(a) Effective Date

    This AD is effective March 30, 2021.

(b) Affected ADs

    This AD replaces AD 2019-02-03, Amendment 39-19550 (84 FR 2437, 
February 7, 2019) (AD 2019-02-03).

(c) Applicability

    This AD applies to all The Boeing Company Model 787-8, 787-9, 
and 787-10 airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 26, Fire 
protection.

(e) Unsafe Condition

    This AD was prompted by reports of warpage of internal engine 
fire handle components that can cause binding and prevent proper 
operation, and by the development of a new fire handle design that 
will prevent the unsafe condition. The FAA is issuing this AD to 
address a latent failure of the engine fire handle, which could 
result in the inability to extinguish an engine fire that, if 
uncontrollable, could lead to wing failure.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Retained Maintenance/Inspection Program Revision, With no Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2019-02-03, with no changes. Within 14 days after February 22, 2019 
(the effective date of AD 2019-02-03), revise the existing 
maintenance or inspection program, as applicable, to add 
airworthiness limitation 28-AWL-FIRE, by incorporating the 
information specified in figure 1 to paragraph (g) of this AD into 
the Airworthiness Limitations Section of the Instructions for 
Continued Airworthiness. The initial compliance time for 
accomplishing the actions specified in figure 1 to paragraph (g) of 
this AD is within 45 days after February 22, 2019.
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[[Page 10793]]

[GRAPHIC] [TIFF OMITTED] TR23FE21.013

(h) Retained Restrictions on Alternative Actions and Intervals, With 
New Exception

    This paragraph restates the requirements of paragraph (h) of AD 
2019-02-03, with a new exception. Except as required by paragraph 
(k) of this AD: After accomplishment of the existing maintenance or 
inspection program revision 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 (p) of this AD.

(i) New Required Actions

    For the airplanes identified in Boeing Requirements Bulletin 
B787-81205-SB260008-00 RB, Issue 001, dated March 10, 2020: At the 
applicable times specified in the ``Compliance'' paragraph of Boeing 
Requirements Bulletin B787-81205-SB260008-00 RB, Issue 001, dated 
March 10, 2020, except as specified by paragraph (j) of this AD, do 
all applicable actions identified in, and in accordance with, the 
Accomplishment Instructions of Boeing

[[Page 10794]]

Requirements Bulletin B787-81205-SB260008-00 RB, Issue 001, dated 
March 10, 2020.
    Note 1 to paragraph (i): Guidance for accomplishing the actions 
required by paragraph (i) of this AD can be found in Boeing Service 
Bulletin B787-81205-SB260008-00, Issue 001, dated March 10, 2020, 
which is referred to in Boeing Requirements Bulletin B787-81205-
SB260008-00 RB, Issue 001, dated March 10, 2020.

(j) Exception to Service Information Specifications

    Where Boeing Requirements Bulletin B787-81205-SB260008-00 RB, 
Issue 001, dated March 10, 2020, uses the phrase ``the issue 001 
date of Requirements Bulletin B787-81205-SB260008-00 RB,'' this AD 
requires using ``the effective date of this AD.''

(k) New Maintenance/Inspection Program Revision

    Except as provided by paragraph (l) of this AD: Prior to or 
concurrently with the actions specified in paragraph (i) of this AD, 
or within 30 days after the effective date of the AD, whichever 
occurs later; revise the existing maintenance or inspection program, 
as applicable, by incorporating the information specified in figure 
2 to paragraph (k) of this AD into the Airworthiness Limitations 
Section of the Instructions for Continued Airworthiness. It is 
acceptable to change the limitation number from 28-AWL-FIRE to 26-
AWL-FIRE, provided the rest of the information in figure 2 to 
paragraph (k) of this AD remains unchanged. The initial compliance 
time for accomplishing the actions specified in figure 2 to 
paragraph (k) of this AD is within 30 days after accomplishing the 
last 28-AWL-FIRE or 26-AWL-FIRE task, as applicable. Accomplishing 
the revision required by this paragraph terminates the actions 
required by paragraph (g) of this AD.

[[Page 10795]]

[GRAPHIC] [TIFF OMITTED] TR23FE21.014

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(l) Alternative Operational Check

    For Model 787-8, -9, and -10 airplanes equipped with an engine 
fire control panel having part number 412600-001 or an engine fire 
shutoff switch having part number 417000-101 or 417000-102: As an 
alternative to performing the actions required by paragraph (k) of 
this AD, within 30 days after accomplishing the last 28-AWL-FIRE or 
26-AWL-FIRE task or accomplishing the last operational check of the 
engine fire handle in accordance with Boeing Requirements Bulletin 
B787-81205-SB260007-00 RB, Issue 001, dated February 22, 2019; 
perform an operational check of the engine fire handle in accordance 
with Boeing Requirements Bulletin B787-81205-SB260007-00 RB, Issue 
001, dated February 22, 2019. Repeat the operational check 
thereafter at intervals not to exceed 30 days. Accomplishing the 
initial check specified in this paragraph terminates the actions 
required by paragraph (g) of this AD.
    Note 2 to paragraph (l): Guidance for accomplishing the actions 
specified in paragraph (l) of this AD can be found in

[[Page 10796]]

Boeing Service Bulletin B787-81205-SB260007-00, Issue 001, dated 
February 22, 2019, which is referred to in Boeing Requirements 
Bulletin B787-81205-SB260007-00 RB, Issue 001, dated February 22, 
2019.

(m) New Restrictions on Alternative Actions and Intervals

    After accomplishment of the existing maintenance or inspection 
program revision required by paragraph (k) of this AD, no 
alternative actions (e.g., inspections) or intervals may be used 
unless the actions or intervals are approved as an AMOC in 
accordance with the procedures specified in paragraph (p) of this 
AD.

(n) Terminating Action for Repetitive Inspections

    Accomplishment of the actions required by paragraph (i) of this 
AD on all affected airplanes in an operator's fleet terminates the 
requirements of paragraph (k) of this AD.

(o) Parts Installation Prohibition

    For Model 787-8, -9, and -10 airplanes, except those identified 
in Boeing Requirements Bulletin B787-81205-SB260008-00 RB, Issue 
001, dated March 10, 2020: As of the effective date of this AD, no 
person may install on any airplane any engine fire control panel 
having part number (P/N) 412600-001, or any engine fire shutoff 
switch having P/N 417000-101 or P/N 417000-102.

(p) 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 local Flight Standards District 
Office, as appropriate. If sending information directly to the 
manager of the certification office, send it to the attention of the 
person identified in paragraph (q) of this AD. Information may be 
emailed to: [email protected].
    (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.
    (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, FAA, 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 approved previously for AD 2019-02-03 are approved as 
AMOCs for the corresponding provisions of paragraph (g) of this AD.

(q) Related Information

    For more information about this AD, contact Tak Kobayashi, 
Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 
2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-
3553; email: [email protected].

(r) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing Requirements Bulletin B787-81205-SB260007-00 RB, 
Issue 001, dated February 22, 2019.
    (ii) Boeing Requirements Bulletin B787-81205-SB260008-00 RB, 
Issue 001, dated March 10, 2020.
    (3) 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.
    (4) 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.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on January 7, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-03567 Filed 2-22-21; 8:45 am]
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