[Federal Register Volume 90, Number 26 (Monday, February 10, 2025)]
[Rules and Regulations]
[Pages 9189-9197]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-02376]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-1993; Project Identifier AD-2023-00129-T;
Amendment 39-22940; AD 2025-02-07]
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) 2020-03-
20, which applied to certain The Boeing Company Model MD-11, MD-11F,
and 717-200 airplanes; all Model 737-8 and 737-9 airplanes; all Model
737-600, -700, -700C, -800, -900, and -900ER series airplanes; certain
Model 747-400 and 747-400F series airplanes; certain Model 757 and 767
airplanes; and all Model 777 airplanes. AD 2020-03-20 required revising
the existing airplane flight manual (AFM) to include a limitation to
prohibit operations that require less than 0.3 required navigational
performance (RNP) within a specified area for airplanes having a
certain multimode receiver (MMR) with certain software installed. This
AD was prompted by reports from Boeing of simultaneous MMR resets
related to an error in calculating Coordinated Universal Time (UTC).
This AD requires the actions in AD 2020-03-20, removes an airplane
model from the applicability, and would also require installing certain
MMR operational software (OPS). The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective March 17, 2025.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 17,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-1993; 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.
Material Incorporated by Reference:
For Boeing material 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; website myboeingfleet.com.
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. It is also available at regulations.gov under
Docket No. FAA-2023-1993.
FOR FURTHER INFORMATION CONTACT: Douglas Tsuji, Aviation Safety
Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone: 206-
231-3548; [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2020-03-20, Amendment 39-19844 (85 FR 8717,
February 18, 2020) (AD 2020-03-20). AD 2020-03-20 applied to certain
The Boeing Company Model MD-11, MD-11F, and 717-200 airplanes; all
Model 737-8 and 737-9 airplanes; all Model 737-600, -700, -700C, -800,
-900, and -900ER series airplanes; certain Model 747-400 and 747-400F
series airplanes; certain Model 757 and 767 airplanes; and all Model
777 airplanes. The NPRM published in the Federal Register on December
12, 2023 (88 FR 86073). The NPRM was prompted by reports from Boeing of
simultaneous MMR resets related to an error in calculating UTC. In the
NPRM, the FAA proposed to continue to require the actions in AD 2020-
03-20 and to require installing certain MMR OPS. The FAA is issuing
this AD to address loss of GPS data and degraded GPS positional
accuracy, which, during a high-precision approach with this GPS error,
could result in controlled flight into terrain, and to address UTC
calculation errors that could result in simultaneous MMR resets on
multiple airplanes, increased air traffic control workload, and
consequent reduction in airplane separation and potential for mid-air
collision.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from Air Line Pilots Association,
International, who supported the NPRM without change.
The FAA received additional comments from ten commenters: American
Airlines, Aviation Partners Boeing (APB), Boeing, Delta Air Lines
(Delta), FedEx, Korean Air, Ryanair, SIA Engineering, United Parcel
Service (UPS) Air, and an individual. The following presents the
comments received on the NPRM and the FAA's response to each comment.
Request for Clarification of Applicability in Regards to Installed MMR
Part Numbers and Software Versions
American Airlines requested a revision to paragraph (c) of the
proposed AD to clarify that only airplanes on which Collins GLU-2100
MMR having P/N 822-2532-100 and a software version earlier than COL4C-
0087-0003 are installed are affected by the proposed requirements.
American Airlines suggested revising the text of paragraph (c) of the
proposed AD to specify only Collins GLU-2100 MMR part number and ``34
MMR OPS'' software versions that are earlier than the required software
version.
[[Page 9190]]
The FAA agrees to clarify which airplane MMR and software
configurations are affected by the requirements of this AD. The FAA has
revised paragraph (c) of this AD to specify the Collins CLU-2100 MMR,
having P/N 822-2532-100, with a software version earlier than COL4C-
0087-0003.
Request To Exclude Certain Configurations of Airplanes
FedEx requested revising paragraphs (c)(1) through (9) of the
proposed AD to add the phrase ``having MMRs with OPS software shown in
Figure 1 to Paragraph (g).'' FedEx explained that without the proposed
wording, the proposed applicability could lead to unnecessary work on
airplanes that are already in compliance with the proposed
requirements.
The FAA agrees to revise paragraphs (c)(1) through (9) of this AD
to add clarity on affected airplanes. As stated previously, the FAA has
revised paragraph (c) of this AD to specify that the applicability
includes airplanes equipped with Collins GLU-2100 MMR, having P/N 822-
2532-100, with a software version earlier than COL4C-0087-0003.
Request To Align Applicability of This AD With AD 2020-03-20
Korean Airlines requested a revision to the applicability of
paragraphs (h) and (i) of the proposed AD to align it with the
applicability of paragraph (g) of the proposed AD. Korean Airlines
noted that paragraph (g) of AD 2020-03-20 was applicable to airplanes
equipped with Collins GLU-2100 MMR having P/N 822-2532-100. Korean
Airlines requested that the same applicability restriction be applied
to paragraphs (h) and (i) of the proposed AD.
The FAA agrees with the request. Paragraphs (h) and (i) of this AD
are intended only for those airplanes equipped with a Collins GLU-2100
MMR having P/N 822-2532-100. Paragraphs (h) and (i) of this AD have
been revised to clarify airplane applicability.
Request To Clarify Affected Configurations
Ryanair requested clarification on what configuration of Model 737-
600, -700, -700C, -800, and -900 series airplanes are affected by the
proposed requirements of paragraph (h) of the proposed AD. Ryanair
pointed out that paragraph (c)(4) of the proposed AD includes all of
the Model 737-600, 700, -700C, -800, and -900 series airplanes
regardless of whether a Collins MMR was installed on those airplanes.
Ryanair contrasted that with paragraphs (g) and (h) of the proposed AD,
where paragraph (g) restricted the required actions to those airplane
configurations equipped with the Collins GLU-2100 MMR, P/N 822-2532-
100, with an applicable GLU-2100 OPS. Ryanair noted that paragraph (h)
of the proposed AD would require installation of the OPS P/N COL4C-
0087-0003, on airplanes identified in paragraphs (h)(1) through (7) of
the proposed AD, but paragraph (h)(3) of the proposed AD identified the
Model 737-600, -700, -700C, -800, and -900 series airplanes without
specifying the Collins MMR configuration. Ryanair explained that OPS P/
N COL4C-0087-0003 is applicable only to Collins MMRs.
The FAA agrees to revise the applicability for clarification. As
stated previously, the FAA has revised paragraphs (c) and (h) of this
AD to specify the affected Collins MMR hardware and software
configuration. This change results in only that configuration being
affected by the requirements of this AD.
Request To Clarify Scope of Affected Collins MMRs
SIA Engineering requested clarification on which Collins MMRs are
affected by the proposed requirements of paragraph (h) of the proposed
AD. SIA Engineering stated that paragraph (h) of the proposed AD would
require installation of the MMR OPS P/N COL4C-0087-0003 or later-
approved software version. SIA Engineering requested information on
whether the requirements of paragraph (h) of the proposed AD would
apply only to Collins GLU-2100 MMR, P/N 822-2532-100, that are
installed on the airplanes identified in paragraphs (h)(1) through (7)
of the proposed AD, or if the requirements would apply to any other
Collins MMR installed on those identified airplanes.
The FAA agrees to clarify. The requirements of paragraph (h) of
this AD are intended to apply only to the Collins GLU-2100 MMR having
P/N 822-2532-100 installed on the identified airplanes. As stated
previously, the FAA has revised paragraphs (c) and (h) of this AD to
specify the affected Collins MMR hardware and software configuration.
Request To Revise Applicability or Provide Credit
UPS Airlines requested that airplanes that were delivered with the
Collins GLU-2100 MMU having OPS P/N COL4C-0087-0003 installed, or
modified with the same MMU and OPS software via STC ST01943WI, be
excluded from the applicability of the proposed AD. UPS Airlines also
stated that if the request for exclusion cannot be granted, the FAA
provide credit instead and also provide credit for the requirements of
paragraph (g) of the proposed AD for airplanes if the AFM revision was
previously removed as authorized via an alternative method of
compliance (AMOC) to AD 2020-03-20.
The FAA partially agrees with the request. The intent of this AD is
to require the software update. The FAA has revised paragraph (c) of
this AD to restrict the applicability to airplanes with the affected
Collins MMR software configuration. This change results in having only
airplanes with that configuration being affected by the requirements of
this AD. Paragraph (k) of this AD provides for terminating the AFM
revision required by paragraph (g) of this AD after the software
installation specified in paragraph (h) or (i) of this AD. Paragraph
(f) of this AD provides relief for required actions that are
accomplished before the effective date of this AD. In addition,
Paragraph (m)(4) has been added to this AD to specify that AMOCs
approved for AD 2020-03-20 are approved as AMOCs for the corresponding
provisions of this AD.
Request To Clarify Terminating Action
American Airlines requested a revision to paragraph (g) of the
proposed AD to clarify that accomplishing the actions in paragraph (h)
or (i) of the proposed AD would mean the AFM revision requirement
specified in paragraph (g) of the proposed AD would not be required.
The FAA disagrees. The FAA considers paragraphs (f) and (k) of this
AD to be equivalents to the requested change. Paragraph (f) of this AD
provides relief for actions done prior to the effective date of this
AD, and paragraph (k) of this AD specifies that the AFM revision may be
removed. The AD has not been revised in this regard.
Request To Clarify Contents of Service Bulletins
American Airlines requested a revision to paragraph (i) of the
proposed AD to add a phrase that describes the software version
specified by the requirements bulletins. American Airlines stated that
this would clarify that the required software for compliance with the
proposed AD is installed by the steps specified in the requirement
bulletins.
The FAA disagrees with revising the AD as suggested by American
Airlines. This information is described in the Material Incorporated by
Reference under 1 CFR part 51 section of both the proposed AD and this
AD; that material
[[Page 9191]]
is required by paragraph (i) of this AD. The FAA has not changed this
AD in this regard.
Effects of Winglets on Accomplishment of Proposed Actions
Aviation Partners Boeing stated that the installation of winglets
per Supplemental Type Certificate (STC) ST00830SE, ST01218SE, or
ST01920SE does not affect the accomplishment of the manufacturer's
service instructions.
The FAA agrees with the commenter that STCs ST00830SE, ST01218SE,
and ST01920SE do not affect the accomplishment of the manufacturer's
service instructions. Therefore, the installation of STC ST00830SE,
ST01218SE, or ST01920SE does not affect the ability to accomplish the
actions required by this AD. The FAA has not changed this AD in this
regard.
Request To Provide Information on Which Methods Would Be Approved
Delta requested clarification on what methods would be approved by
the Manager, AIR-520, FAA, to meet the requirements for installation
and check of MMR OPS P/N COL4C-0087-0003 as proposed in paragraph (h)
of the proposed AD. Delta requested that the installation and check
procedures identified in STCs ST04436AT and ST04416AT be identified as
approved methods. Delta suggested adding ``in accordance with
applicable STCs'' in the second sentence of paragraph (h) of the
proposed AD.
The FAA disagrees with the request to revise paragraph (h) of this
AD to add the phrase ``in accordance with applicable STCs.'' The FAA
would need to evaluate individual STCs to consider an STC to be an
acceptable means of compliance that contains the necessary installation
and check procedures. Operators may use the AMOC procedures specified
in paragraph (m) of this AD to submit, for example, STC ST04436AT or
ST04416AT as a proposed AMOC. No change to this AD is necessary in this
regard.
Request To Clarify Which Airplanes Are Identified in Paragraph (h)(3)
of This AD
Delta requested clarification on whether all of the airplanes
identified in paragraph (h)(3) of the proposed AD would be required to
do the actions proposed in paragraph (h) of the proposed AD. Delta
pointed out that, unlike paragraphs (h)(1), (2), (4), (5), and (6) of
the proposed AD, paragraph (h)(3) of the proposed AD does not identify
Model 737-600, -700, -700C, -800, and -900 series airplanes as being
modified by an STC, specifically, STC ST04436AT. Delta also stated that
it seems Model 737-900ER series airplanes have been omitted from
paragraph (h)(3) of the proposed AD.
The FAA provides the following clarification of the airplanes
affected by paragraph (h)(3) of this AD. Because there are Model 737-
600, -700, -700C, 800, -900, and -900ER series airplanes that had the
Rockwell Collins GLU-2100 installed by STC and Model 737-900ER series
airplanes identified by Boeing Alert Requirements Bulletin 737-34A3572
RB, paragraphs (h)(3) and (i)(2) are intended to be applicable to these
aircraft, respectively. Paragraph (h) of this AD requires the software
to be installed in accordance with a method approved by the Manager,
AIR-520, Continued Operational Safety Branch, FAA. Paragraph (h)(3) of
this AD has been revised to include Model 737-900ER series airplanes
that have been modified by STC ST04436AT. Operators may request an AMOC
in accordance with the procedures specified in paragraph (m) of this
AD.
Request for Clarification on Which Model 737-8 and -9 Series Airplanes
Are Affected by Paragraph (i)(1) of This AD
Delta requested clarification on the Model 737-8 and -9 series
airplanes identified in paragraph (i)(1) of the proposed AD. Delta
sought clarity on whether the proposed actions in paragraph (i)(1) of
the proposed AD are applicable to Model 737-8 and -9 airplanes
identified in Boeing Alert Requirements Bulletin 737-34A3572 only or
applicable to any Model 737-8 or -9 series airplane that is equipped
with a GLU-2100 MMR.
The FAA provides the following clarification. As indicated in the
introductory text to paragraph (i) of this AD, paragraph (i)(1) of this
AD is limited to Model 737-8 and -9 series airplanes equipped with a
Collins GLU-2100 MMR, part number (P/N) 822-2532-100, having any
applicable GLU-2100 operational software (OPS). No change to this AD is
necessary in this regard.
Request To Clarify Affected Model 737-900ER Airplanes for Paragraph
(i)(2) of This AD
Delta requested clarification on the Model 737-900ER series
airplanes identified in paragraph (i)(2) of the proposed AD. Delta
sought clarity on whether the proposed actions in paragraph (i)(2) of
the proposed AD are applicable to Model 737-900ER series airplanes
identified in Boeing Alert Requirements Bulletin 737-34A3573 only or
applicable to any Model 737-900ER series airplane that is equipped with
a GLU-2100 MMR. Delta stated that it is concerned that the paragraph,
as written, would only apply to a subset of 737-900ER series airplanes
that are identified in the Boeing requirements bulletin and not to
airplanes that would be modified by STC ST04436AT and subsequently have
a GLU-2100 MMR installed.
The FAA provides the following clarification. Paragraph (i)(2) of
this AD applies to those Model 737-900ER series airplanes identified in
Boeing Alert Requirements Bulletin 737-34A3572 RB. No change to this AD
in this regard.
Request To Provide Clarification on Showing Compliance for Actions
Accomplished Prior to Effective Date
Delta requested clarification on how to show compliance with the
proposed requirements in paragraph (h) of the proposed AD. Delta stated
a concern for airplanes modified to be equipped with the approved part
number (MMR OPS P/N COL4C-0087-0003 or later version) but were modified
before the effective date of the AD. Delta requested revising the
proposed AD to allow a review of airplane maintenance records.
The FAA provides the following clarification. Airplanes equipped
with the approved part number (MMR OPS P/N COL4C-0087-0003 or later
version) are in compliance with this AD. Paragraph (f) of this AD
provides relief for actions done prior to the effective date of this
AD. No change to this AD is necessary in this regard.
Request To Remove Model 767-2C From Proposed AD
Boeing requested that Model 767-2C series airplanes be removed from
the applicability and other paragraphs of the proposed AD such as in
the Summary and Background of the NPRM, and figure 1 to paragraph (g)
of the proposed AD. Boeing explained that the GLU-2100 MMR had not been
certified for installation or use on Model 767-2C series airplanes.
The FAA agrees to remove reference to Model 767-2C series airplanes
from paragraph (c)(7) of this AD and figure 1 to paragraph (g) of this
AD. The FAA has revised paragraph (c)(7), figure 1 to paragraph (g),
and paragraph (h)(6) of this AD.
Request To Clarify Software Requirements
UPS Airlines requested a clarification on the software requirements
in the third sentence of paragraph (h) of the proposed AD. UPS Airlines
noted that paragraph (h) of the proposed AD
[[Page 9192]]
referred to ``Boeing software versions'' when defining later-approved
software versions. UPS Airlines asked if the FAA means MMR OPS software
versions intended for Boeing airplane models or if the FAA means
Boeing-approved software versions. UPS Airlines noted that operators
who used the STCs are using OPS software under a Collins STC, not a
Boeing STC. UPS Airlines suggested that the FAA either remove the
reference to Boeing or change the reference to Boeing/Collins.
The FAA provides the following clarification. The proposed
requirements would have meant only Boeing-approved software versions.
The FAA has revised paragraph (h) of this AD to include Collins-
approved software versions.
Conclusion
The FAA reviewed the relevant data, considered any comments
received, and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. Except for minor editorial changes, and
any other changes described previously, this AD is adopted as proposed
in the NPRM. None of the changes will increase the economic burden on
any operator.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed the following Boeing requirements bulletins:
Boeing Alert Requirements Bulletin 737-34A3572 RB, dated
October 15, 2020.
Boeing Alert Requirements Bulletin 737-34A3573 RB, dated
August 5, 2020.
Boeing Alert Requirements Bulletin 777-34A0385 RB,
Revision 1, dated March 8, 2021.
This material specifies procedures for installation of MMR OPS part
number (P/N) COL4C-0087-0003 (or later-approved software P/N) in MMR 1
and MMR 2, installation of MMR option selection software (OSS) P/N
BCG27-U000-0730 or BCG48-U000-05W9, and software configuration checks.
This material also specifies taking concurrent actions, including
replacement of MMRs, replacement of GPS antennas, and installation of
additional software.
These documents are distinct since they apply to different airplane
models and configurations. 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.
Costs of Compliance
The FAA estimates that this AD affects 409 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
AFM revision (retained action 1 work-hour x $85 $0 $85 $34,765.
from AD 2020-03-20). per hour = $85.
Software installation and check 2 work-hours x $85 265 435 $177,915.
(new action). per hour = $170.
Concurrent actions............... 5 work-hours x $85 = 795 1,220 Up to $498,980.*
$425.
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* Not all airplanes would be required to do the concurrent actions. However, the FAA does not have an estimate
of how many airplanes are in a configuration that would require concurrent actions.
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
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.
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) 2020-03-20, Amendment 39-19844
(85 FR 8717, February 18, 2020); and
0
b. Adding the following new AD:
2025-02-07 The Boeing Company: Amendment 39-22940; Docket No. FAA-
2023-1993; Project Identifier AD-2023-00129-T.
(a) Effective Date
This airworthiness directive (AD) is effective March 17, 2025.
(b) Affected ADs
This AD replaces AD 2020-03-20, Amendment 39-19844 (85 FR 8717,
February 18, 2020) (AD 2020-03-20).
(c) Applicability
This AD applies to The Boeing Company airplanes, certificated in
any category, as identified in paragraphs (c)(1) through (9) of this
AD, on which Collins GLU-2100 MMR, P/N 822-2532-100, with a software
version earlier than COL4C-0087-0003 is installed.
(1) Model MD-11 and MD-11F airplanes modified by supplemental
type certificate (STC) ST01895WI.
[[Page 9193]]
(2) Model 717-200 airplanes modified by STC ST04416AT.
(3) All Model 737-8 and 737-9 airplanes.
(4) All Model 737-600, -700, -700C, -800, -900, and -900ER
series airplanes.
(5) Model 747-400 and 747-400F series airplanes modified by STC
ST01892WI.
(6) Model 757-200, -200PF, -200CB, and -300 series airplanes
modified by STC ST04436AT.
(7) Model 767-200, -300, -300F, and -400ER series airplanes
modified by STC ST04436AT or ST01883WI.
(8) All Model 777-200, -200LR, -300, and -300ER series
airplanes.
(9) All Model 777F series airplanes.
(d) Subject
Air Transport Association (ATA) of America Code 34, Navigation.
(e) Unsafe Condition
This AD was prompted by reports of the loss of global
positioning system (GPS) data or degraded GPS positional accuracy
and additional reports of an error in calculating Coordinated
Universal Time (UTC) while using a certain multi-mode receiver (MMR)
with certain software installed. The FAA is issuing this AD to
address loss of GPS data and degraded GPS positional accuracy,
which, during a high-precision approach with this GPS error, could
result in controlled flight into terrain, and to address UTC
calculation errors that could result in simultaneous MMR resets on
multiple airplanes, increased air traffic control workload, and
consequent reduction in airplane separation and potential for mid-
air collision.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Airplane Flight Manual (AFM) Revision, With No Changes
This paragraph restates the requirements of paragraph (g) of AD
2020-03-20, with no changes. For airplanes equipped with Collins
GLU-2100 MMR, part number (P/N) 822-2532-100, having any applicable
GLU-2100 operational software (OPS) identified in figure 1 to
paragraph (g) of this AD installed: At the applicable time specified
in paragraphs (g)(1) and (2) of this AD, revise the limitations or
certificate limitations section, as applicable, of the existing AFM
to include the information specified in figure 2 to paragraph (g) of
this AD and revise the procedures or normal procedures section, as
applicable, of the existing AFM to include the information specified
in figure 3 to paragraph (g) of this AD. This may be done by
inserting a copy of figures 2 and 3 to paragraph (g) of this AD into
the existing AFM.
(1) For Model 737-8 and 737-9 airplanes: Before further flight.
(2) For all airplanes except Model 737-8 and 737-9 airplanes:
Within 7 days after February 18, 2020 (the effective date of AD
2020-03-20).
BILLING CODE 4910-13-P
Figure 1 to Paragraph (g)--Affected OPS Software
[GRAPHIC] [TIFF OMITTED] TR10FE25.000
[[Page 9194]]
Figure 2 to Paragraph (g)--AFM--Limitations or Certificate Limitations
[GRAPHIC] [TIFF OMITTED] TR10FE25.001
[[Page 9195]]
Figure 2 to Paragraph (g)--AFM--Limitations or Certificate Limitations
Continued
[GRAPHIC] [TIFF OMITTED] TR10FE25.002
[[Page 9196]]
Figure 3 to Paragraph (g)--AFM--Procedures or Normal Procedures
[GRAPHIC] [TIFF OMITTED] TR10FE25.003
BILLING CODE 4910-13-C
(h) Software Installation for Certain Airplanes
For airplanes identified in paragraphs (h)(1) through (7) of
this AD with Collins GLU-2100 MMR, part number (P/N) 822-2532-100,
having any applicable GLU-2100 operational software (OPS): Within 12
months after the effective date of this AD, install MMR OPS P/N
COL4C-0087-0003, or later-approved software version, and do a
software configuration check to confirm that P/N COL4C-0087-0003 or
later-approved software version is installed. Both the installation
and the check must be done in accordance with a method approved by
the Manager, AIR-520, Continued Operational Safety Branch, FAA.
Later-approved software versions are those Boeing or Collins
software versions that are approved as a replacement for MMR OPS P/N
COL4C-0087-0003 and are approved as part of the type design by the
FAA or by The Boeing Company Organization Designation Authorization
(ODA).
(1) Model MD-11 and MD-11F airplanes modified by STC ST01895WI.
(2) Model 717-200 airplanes modified by STC ST04416AT.
(3) Model 737-600, -700, -700C, -800, -900, and -900ER series
airplanes modified by STC ST04436AT.
(4) Model 747-400 and 747-400F series airplanes modified by STC
ST01892WI.
(5) Model 757-200, -200PF, -200CB, and -300 series airplanes
modified by STC ST04436AT.
(6) Model 767-200, -300, -300F, and -400ER series airplanes
modified by STC ST04436AT or ST01883WI.
(7) Model 777-200, -200LR, and -300 series airplanes.
(i) Software Installation for Certain Other Airplanes
For Model 737-8 and -9 airplanes, Model 737-900ER series
airplanes, and Model 777-300ER and 777F series airplanes equipped
with Collins GLU-2100 MMR, part number (P/N) 822-2532-100, having
any applicable GLU-2100 operational software (OPS): Within 12 months
after the effective date of this AD, except as specified in
paragraph (j) of this AD, do all applicable actions identified in,
and in accordance with, the Accomplishment Instructions of the
applicable requirements bulletin identified in paragraphs (i)(1)
through (3) of this AD.
(1) For Model 737-8 and -9 airplanes: Boeing Alert Requirements
Bulletin 737-34A3572 RB, dated October 15, 2020.
Note 1 to paragraph (i)(1): Guidance for accomplishing the
actions required by paragraph (i)(1) of this AD can be found in
Boeing Alert Service Bulletin 737-34A3572, dated October 15, 2020,
which is referred to in Boeing Alert Requirements Bulletin 737-
34A3572 RB, dated October 15, 2020.
(2) For Model 737-900ER series airplanes: Boeing Alert
Requirements Bulletin 737-34A3573 RB, dated August 5, 2020.
Note 2 to paragraph (i)(2): Guidance for accomplishing the
actions required by paragraph (i)(2) of this AD can be found in
Boeing Alert Service Bulletin 737-34A3573, dated August 5, 2020,
which is referred to in Boeing Alert Requirements Bulletin 737-
34A3573 RB, dated August 5, 2020.
(3) For Model 777-300ER and 777F series airplanes: Boeing Alert
Requirements Bulletin 777-34A0385 RB, Revision 1, dated March 8,
2021.
Note 3 to paragraph (i)(3): Guidance for accomplishing the
actions required by paragraph (i)(3) of this AD can be found in
Boeing Alert Service Bulletin 777-34A0385, Revision 1, dated March
8, 2021, which is referred to in Boeing Alert Requirements Bulletin
777-34A0385 RB, Revision 1, dated March 8, 2021.
(j) Exceptions to Service Information Specifications
Where the requirements bulletins identified in paragraphs (i)(1)
through (3) of this AD specify installing MMR option selection
software (OSS) P/N BCG27-U000-0730 or BCG48-U000-05W9 and doing the
associated software configuration check, this AD does not require
those actions.
(k) Terminating Action
After accomplishing the actions required by paragraph (h) or (i)
of this AD, as applicable, you may remove the AFM revision required
by paragraph (g) of this AD.
(l) Credit for Previous Actions
This paragraph provides credit for the actions required by
paragraph (i)(3) of this AD, if the actions were performed before
the effective date of this AD using Boeing Alert Requirements
Bulletin 777-34A0385 RB, dated August 7, 2020.
(m) Alternative Methods of Compliance (AMOCs)
(1) The Manager, AIR-520, Continued Operational Safety 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
(n)(1) 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 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 ODA that has been authorized
by the Manager, AIR-520, Continued Operational Safety 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.
[[Page 9197]]
(4) AMOCs approved for AD 2020-03-20 are approved as AMOCs for
the corresponding provisions of this AD.
(n) Related Information
(1) For more information about this AD, contact Douglas Tsuji,
Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA
98198; phone: 206-231-3548; [email protected].
(2) Material identified in this AD that is not incorporated by
reference is available at the addresses specified in paragraph
(o)(3) of this AD.
(o) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the material listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless the AD specifies otherwise.
(i) Boeing Alert Requirements Bulletin 737-34A3572 RB, dated
October 15, 2020.
(ii) Boeing Alert Requirements Bulletin 737-34A3573 RB, dated
August 5, 2020.
(iii) Boeing Alert Requirements Bulletin 777-34A0385 RB,
Revision 1, dated March 8, 2021.
(3) For Boeing material 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; website myboeingfleet.com.
(4) 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.
(5) You may view this material at the National Archives and
Records Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/[email protected]">www.archives.gov/federal-register/cfr/[email protected].
Issued on January 16, 2025.
Suzanne Masterson,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-02376 Filed 2-7-25; 8:45 am]
BILLING CODE 4910-13-P