Federal Register / Vol. 90, No. 26 / Monday, February 10, 2025 / Rules and Regulations 9189 

financial reporting; and revised 

requirements concerning when 

exemptions may be requested. The 

Board, which is composed of domestic 

manufacturers from across the country 

and importers, unanimously 

recommended the changes to the Order 

on August 19, 2023. 

This action is exempt from notice and 

comment under 5 U.S.C. 553 and is 

applicable immediately upon 

publication in the Federal Register, 

based on the good cause exceptions in 

5 U.S.C. 553(b)(B) and 553(d)(3), 

respectively. Seeking public comment is 

impracticable, unnecessary, and 

contrary to the public interest. The 

temporary delay in effective date is 

necessary to give Department officials 

the opportunity for further review and 

consideration of new regulations, 

consistent with the President’s 

memorandum of January 20, 2025. 

Given the imminence of the effective 

date, seeking prior public comment on 

this temporary delay would have been 

impractical, as well as contrary to the 

public interest in the orderly 

promulgation and implementation of 

regulations. The imminence of the 

effective date is also good cause for 

making this action effective 

immediately upon publication. 

Erin Morris, 

Associate Administrator, Agricultural 

Marketing Service. 

[FR Doc. 2025–02423 Filed 2–6–25; 8:45 am] 

BILLING CODE P 

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. 

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; 

Douglas.Tsuji@faa.gov. 

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. 


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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 


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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 


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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 laterapproved 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

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

AFM revision (retained action from AD 2020– 

03–20).

1 work-hour × $85 per hour = $85 ................. $0 $85 $34,765. 

Software installation and check (new action) 2 work-hours × $85 per hour = $170 ............. 265 435 $177,915. 

Concurrent actions ......................................... 5 work-hours × $85 = $425 ........................... 795 1,220 Up to $498,980.* 

* 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 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by: 

■ a. Removing Airworthiness Directive 

(AD) 2020–03–20, Amendment 39– 

19844 (85 FR 8717, February 18, 2020); 

and 

■ 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. 


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(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 


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Airplanes OPS Software Number 

Model 777-200, 777-200LR, 777-300, 777-300ER, and COL4D-0087-0002 

777F series airplanes 

Model 737-600, 737-700, 737-700C, 737-800, 737-900, COL4E-0087-0001 

and 737-900ER series airplanes; and Model 737-8, and 

73 7-9 airplanes 

All airplanes COL48-0087-0700 

Model MD-11, MD-I IF, and 717-200 airplanes; and COL49-0087-0701 

Model 737-600, 737-700, 737-700C, 737-800, 737-900, 

737-900ER, 747-400F, 747-400, 757-200, 757-200PF, 

757-200CB, 757-300, 767-200, 767-300, 767-300F, 

767-400ER, 777-200, 777-200LR, 777-300, 777-300ER, 

and 777F series airplanes 
9194 Federal Register / Vol. 90, No. 26 / Monday, February 10, 2025 / Rules and Regulations 

Figure 2 to Paragraph (g)—AFM— 

Limitations or Certificate Limitations 


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Electronics- Global Landing Unit (GLU) (Required by AD 2020-03-20) 

Operations that require less than 0.3 RNP (For example, 0.1, 0.11, 0.15, etc.) in the region 

identified below are prohibited with GLU-2100 OPS software number COL4D-0087-0002, 

COL4E-0087-0001, COL48-0087-0700, or COL49-0087-0701 installed. 

Exception: Anchorage (PANC) approach procedures that allow less than RNP 0.3 are 

authorized provided the instructions outlined in the Electronics - Global Landing Unit 

Section of Normal Procedures Chapter are followed. 

Note: Currently, Fairbanks (PAFA) and Anchorage (PANC) are the only airports in the 

region with an RNP approach that requires better than 0.3 nmi performance. 

Region bounded by the following coordinates: 

Latitude Range (degrees) Longitude Range (degrees) 

80Nto 70N 40Eto 40 W 

70Nto 69N 134.5 E to 134.38 W 

69Nto 68 N 134.5 E to 137.28 W 

68 Nto 67N 134.5 E to 139.50 W 

67Nto 66N 134.5 E to 141.58 W 

66Nto 65 N 134.5 E to 144.23 W 

65Nto 64 N 134.5 E to 145.48 W 

64 Nto 63 N 134.5 E to 146.44 W 

63 Nto 62 N 134.5 E to 148.33 W 

62 Nto 61 N 134.5 E to 149.50 W 

61 Nto 60N 134.5 E to 150.35 W 

60Nto 59N 134.5 E to 151.00 W 

59Nto 58 N 134.5 E to 151.40 W 

58 Nto 57N 134.5 E to 152.62 W 

57Nto 56N 134.5 E to 153.42 W 

56Nto 30N 154 E to 154 W 

30Nto 5N 163 E to 163 W 

5Nto10S 166 E to 166 W 

10 S to 15 S 170Eto 170W 
Federal Register / Vol. 90, No. 26 / Monday, February 10, 2025 / Rules and Regulations 9195 

Figure 2 to Paragraph (g)—AFM— 

Limitations or Certificate Limitations 

Continued 


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g _________________ ....___,__......._ _ __, 
9196 Federal Register / Vol. 90, No. 26 / Monday, February 10, 2025 / Rules and Regulations 

Figure 3 to Paragraph (g)—AFM— 

Procedures or Normal Procedures 

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: AMOC@

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 

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. 


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Electronics - Global Landing Unit (GLU) (Required by AD 2020-03-20) 

To conduct an approach procedure with GLU-2100 OPS software number COL4D-0087-0002, 

COL4E-0087-0001, COL48-0087-0700, or COL49-0087-0701, installed at Anchorage (PANC) 

with less than 0.3 RNP, accomplish the following prior to dispatch in accordance with AC 

90-lOlA: 

Perform a RNP GPS prediction to ensure the predicted availability of GPS Horizontal 

Integrity Limit (HIL) is less than MAX HIL for the planned operation time frame at 

Anchorage (PANC). 

MAX HIL = 1.8 (RNP - 0.0726 nm) for LNAV with A/P engaged 

MAX HIL = 1.8 (RNP - 0.0926 nm) for LNAV with F/D 
Federal Register / Vol. 90, No. 26 / Monday, February 10, 2025 / Rules and Regulations 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; 

Douglas.Tsuji@faa.gov. 

(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/ 

ibr-locationsoremailfr.inspection@nara.gov. 

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 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–1887; Project 

Identifier MCAI–2023–01237–T; Amendment 

39–22929; AD 2025–01–05] 

RIN 2120–AA64 

Airworthiness Directives; Embraer S.A. 

(Type Certificate Previously Held by 

Yabora ̃ Indu ́ stria Aerona ́utica S.A.; 

Embraer S.A.) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2022–25– 

07, which applied to all Embraer S.A. 

Model ERJ 170–100 LR, –100 STD, –100 

SE, and –100 SU airplanes; and Model 

ERJ 170–200 LR, –200 SU, –200 STD, 

and –200 LL airplanes. AD 2022–25–07 

required revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

This AD was prompted by a 

determination that new or more 

restrictive airworthiness limitations are 

necessary. This AD continues to require 

all actions in AD 2022–25–07 and 

requires revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations, 

and certain structural modifications, as 

specified in an Ageˆncia Nacional de 

Aviac ̧a ̃o Civil (ANAC) AD, which is 

incorporated by reference. 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 a certain publication listed in this AD 

as of March 17, 2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publication listed in 

this AD as of January 23, 2023 (87 FR 

77493, December 19, 2022). 

The Director of the Federal Register 

approved the incorporation by reference 

of certain other publications listed in 

this AD as of February 10, 2020 (85 FR 

453, January 6, 2020). 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–1887; 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, the mandatory 

continuing airworthiness information 

(MCAI), 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 ANAC material identified in 

this AD, contact National Civil Aviation 

Agency (ANAC), Aeronautical Products 

Certification Branch (GGCP), Rua Dr. 

Orlando Feirabend Filho, 230—Centro 

Empresarial Aquarius—Torre B— 

Andares 14 a 18, Parque Residencial 

Aquarius, CEP 12.246–190—Sa ̃o Jose ́

dos Campos—SP, Brazil; telephone 55 

(12) 3203–6600; email pac@anac.gov.br; 

website anac.gov.br/en/. You may find 

this material on the ANAC website at 

sistemas.anac.gov.br/certificacao/DA/ 

DAE.asp. 

• For Embraer material, contact 

Embraer S.A., Technical Publications 

Section (PC 060), Av. Brigadeiro Faria 

Lima, 2170—Putim—12227–901 Sa ̃o 

Jose dos Campos—SP—Brasil; telephone 

+55 12 3927–5852 or +55 12 3309–0732; 

fax +55 12 3927–7546; email distrib@

embraer.com.br; internet 

flyembraer.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–2024–1887. 

FOR FURTHER INFORMATION CONTACT: 

Joshua Bragg, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 817– 

222–5366; email joshua.k.bragg@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2022–25–07, 

Amendment 39–22263 (87 FR 77493, 

December 19, 2022) (AD 2022–25–07). 

AD 2022–25–07 applied to all Embraer 

S.A. Model ERJ 170–100 LR, –100 STD, 

–100 SE, and –100 SU airplanes; and 

Model ERJ 170–200 LR, –200 SU, –200 

STD, and –200 LL airplanes. AD 2022– 

25–07 required revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

The FAA issued AD 2022–25–07 to 

address fatigue cracking of various 

principal structural elements (PSEs); 

such cracking could result in reduced 

structural integrity of the airplane. AD 

2022–25–07 addressed safety significant 

latent failures; such failures, in 

combination with one or more other 

specified failures or events, could result 

in a hazardous or catastrophic failure 

condition of avionics, hydraulic 

systems, fire detection systems, fuel 

systems, or other critical systems. 

Furthermore, AD 2022–25–07 addressed 

the potential ignition sources inside fuel 

tanks caused by latent failures, 

alterations, repairs, or maintenance 

actions; such failures, in combination 

with flammable fuel vapors, could result 

in fuel tank explosions and consequent 

loss of the airplane. 


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