Federal Register / Vol. 89, No. 212 / Friday, November 1, 2024 / Proposed Rules 87319 

(c) Applicability 

This AD applies to General Electric 

Company (GE) Model GE90–110B1 and 

GE90–115B engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7320, Fuel Controlling System. 

(e) Unsafe Condition 

This AD was prompted by an in-service 

occurrence of loss of engine thrust control 

resulting in uncommanded high thrust. The 

FAA is issuing this AD to prevent dispatch 

of the airplane when certain faults caused by 

degradation of the MN4 integrated circuit in 

the full authority digital engine control 

(FADEC) are displayed and certain FADEC 

conditions are present, and to prevent failure 

of the electronic engine control (EEC) FADEC 

integrated circuit (MN4) microprocessor 

solder ball. The unsafe condition, if not 

addressed, could result in loss of engine 

thrust control and reduced control of the 

airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Actions From AD 2020–20–17 

(1) After October 23, 2020 (the effective 

date of AD 2020–20–17), notwithstanding the 

provisions of the operator’s minimum 

equipment list (MEL), dispatch of an airplane 

is prohibited if the engine indicating and 

crew alerting system (EICAS) displays the 

status message ‘‘ENG EEC C1 L’’ or ‘‘ENG 

EEC C1 R’’ and any condition is present that 

is listed in the Accomplishment Instructions, 

paragraphs 3.A.(2)(f), 3.A.3(a), or 3.A.(4) of 

GE GE90–100 Service Bulletin 73–0117 R01, 

dated August 5, 2020. 

(2) As terminating action for the 

requirements of paragraph (g)(1) of this AD, 

within 120 days of October 23, 2020 (the 

effective date of AD 2020–20–17), revise the 

existing FAA-approved MEL by 

incorporating into the MEL the dispatch 

restrictions listed in paragraph (g)(1) of this 

AD as a required operation or maintenance 

procedure. Specific alternative MEL wording 

to accomplish the actions specified in 

paragraph (g)(1) of this AD can be approved 

by the operator’s principal operations or 

maintenance inspector. 

(h) Retained Actions From AD 2021–15–05 

(1) Within the following compliance times 

after September 13, 2021 (the effective date 

of AD 2021–15–05), replace the FADEC MN4 

microprocessor using an approved overhaul 

procedure: 

(i) For a FADEC MN4 microprocessor with 

10,500 or more cycles since new (CSN), 

replace the FADEC MN4 microprocessor 

before accumulating 500 additional cycles on 

the FADEC MN4 microprocessor. 

(ii) For a FADEC MN4 microprocessor with 

5,000 CSN or more, but fewer than 10,500 

CSN, replace the FADEC MN4 

microprocessor at the next FADEC 

component shop visit or before accumulating 

11,000 CSN on the FADEC MN4 

microprocessor, whichever occurs first. 

(2) Thereafter, repeat the replacement of 

the FADEC MN4 microprocessor at the first 

FADEC component shop visit after 

accumulating 5,000 cycles since the last 

replacement but before accumulating 11,000 

cycles since the last replacement. 

(i) Retained Definitions From AD 2021–15– 

05 

For the purpose of this AD: 

(1) An ‘‘approved overhaul procedure’’ is 

one of the following: 

(i) Replacement of the FADEC MN4 

microprocessor using FADEC Internationalapproved maintenance procedures; or 

(ii) Replacement of the FADEC MN4 

microprocessor using the Accomplishment 

Instructions, paragraph 3.A., of GE GE90–100 

Service Bulletin 73–0118, Revision 01, dated 

April 27, 2021. 

(2) A ‘‘FADEC component shop visit’’ is 

the induction of the FADEC into a repair 

facility to perform internal maintenance on 

the FADEC. 

(j) New Required Actions 

Within 180 days after the effective date of 

this AD, replace any EEC FADEC software 

version that is earlier than A.0.8.6 with an 

EEC FADEC software version that is eligible 

for installation. 

(k) Terminating Action 

The actions specified in paragraph (j) of 

this AD constitute terminating action for all 

the requirements of paragraphs (g) and (h) of 

this AD. 

(l) Installation Prohibition 

As of the effective date of this AD, no 

person may install on any engine, an EEC 

FADEC software version that is earlier than 

A.0.8.6. 

(m) Definition 

For the purpose of this AD, an ‘‘EEC 

FADEC software version that is eligible for 

installation’’ is any software version that is 

A.0.8.6 or later. 

(n) 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 local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the AIR–520 Continued 

Operational Safety Branch, send it to the 

attention of the person identified in 

paragraph (o) of this AD and email to: 

AMOC@faa.gov. 

(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. 

(o) Additional Information 

For more information about this AD, 

contact Alexander Thickstun, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (202) 267–8292; 

email: alexander.m.thickstun@faa.gov. 

(p) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) 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. 

(3) The following material was approved 

for IBR on October 23, 2020 (85 FR 63443, 

October 8, 2020). 

(i) General Electric Company (GE) GE90– 

100 Service Bulletin 73–0117 R01, dated 

August 5, 2020. 

(ii) [Reserved] 

(4) The following material was approved 

for IBR on September 13, 2021 (86 FR 43409, 

August 9, 2021). 

(i) GE GE90–100 Service Bulletin 73–0118, 

Revision 01, dated April 27, 2021. 

(ii) [Reserved] 

(5) For GE material identified in this AD, 

contact GE, 1 Neumann Way, Cincinnati, OH 

45215; phone: (513) 552–3272; email: 

aviation.fleetsupport@ge.com; website: 

ge.com. 

(6) You may view this material at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 1200 District Avenue, 

Burlington, MA 01803. For information on 

the availability of this material at the FAA, 

call (817) 222–5110. 

(7) 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-locations or email fr.inspection@nara.gov. 

Issued on October 25, 2024. 

Suzanne Masterson, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–25377 Filed 10–31–24; 8:45 am] 

BILLING CODE 4910–13–P 

POSTAL REGULATORY COMMISSION 

39 CFR Part 3050 

[Docket No. RM2025–2; Order No. 7831] 

Periodic Reporting 

AGENCY: Postal Regulatory Commission. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Commission is 

acknowledging a recent Postal Service 

filing requesting the Commission 

initiate a rulemaking proceeding to 

consider changes to analytical 

principles relating to periodic reports. 

This document informs the public of the 

filing, invites public comment, and 

takes other administrative steps. 

DATES: Comments are due: November 

27, 2024. 


khammond on DSKJM1Z7X2PROD with PROPOSALS
87320 Federal Register / Vol. 89, No. 212 / Friday, November 1, 2024 / Proposed Rules 

1Petition of the United States Postal Service to 

Initiate a Proceeding to Change Analytical 

Principles and Notice of Filing Non-Public 

Materials, October 22, 2024 (Petition). The 

proposed change is attached to the Petition 

(Proposal). 

ADDRESSES: Submit comments 

electronically via the Commission’s 

Filing Online system at http://

www.prc.gov. Those who cannot submit 

comments electronically should contact 

the person identified in the FOR FURTHER

INFORMATION CONTACT section by 

telephone for advice on filing 

alternatives. 

FOR FURTHER INFORMATION CONTACT: 

David A. Trissell, General Counsel, at 

202–789–6820. 

SUPPLEMENTARY INFORMATION: 

Table of Contents 

I. Introduction 

II. Proposal 

III. Notice and Comment 

IV. Ordering Paragraphs 

I. Introduction 

On October 22, 2024, the Postal 

Service filed a petition pursuant to 39 

CFR 3050.11 requesting that the 

Commission initiate a rulemaking 

proceeding to consider changes to 

analytical principles relating to periodic 

reports.1 The Petition identifies the 

proposed analytical changes filed in this 

docket as modifications to the mail 

processing cost model for Parcel Select 

and Parcel Return Service. Petition, 

Proposal at 1. 

II. Proposal 

Background. The Postal Service states 

that, in Order No. 6536, the Commission 

approved structural changes designed to 

simplify the Parcel Select price 

structure. See id. at 1, n.3. The Postal 

Service further states that, in Order No. 

6798, the Commission approved 

conforming changes to the Parcel Select 

and Parcel Return Service (PRS) mail 

processing and transportation cost 

models. See id. at 2, n.4. The Postal 

Service notes that in Fiscal Year (FY) 

2024, the Commission approved several 

Negotiated Service Agreements (NSAs) 

that include a provision for DHubentered packages, whose supporting 

workpapers ‘‘utilized the DSCF–SCF 

mail processing cost as a proxy for the 

DHub non-presort cost[.]’’ See id. at 2. 

The Postal Service states that in its 

requests it declared the intention to 

propose a DHub non-presort mail flow 

model and corresponding mail 

processing cost for Commission review. 

Id. 

Proposal. For purposes of reporting 

costs for NSAs under which ‘‘the 

customer will be able to enter 

machinable non-presorted DHub 

packages at specific designated Sorting 

& Delivery Centers (S&DCs) that contain 

parcel sorting equipment[,]’’ the Postal 

Service proposes that the Parcel Select 

and PRS mail processing cost model be 

modified to ‘‘include a non-presort 

machinable mail flow (DHub) and 

corresponding mail processing cost 

estimates for DHub-entered packages.’’ 

See id. at 2–3. This new flow and 

corresponding cost estimate would be in 

addition to existing flows and cost 

estimates for 5-digit presorted DHubentered packages and non-presorted 

DSCF-entered packages. See id. 

The Postal Service filed under seal the 

proposed modified mail processing cost 

model with the Petition. Id. at 3. The 

proposed cost model includes DHub 

cost estimates for non-presort 

machinable Parcel Select Heavy Weight 

(PSHW) and non-presort machinable 

Parcel Select Light Weight (PSLW) 

mailpieces. Id. The corresponding new 

mail flow includes ‘‘differing hub 

container movement costs and 

additional sortation’’ and has ‘‘only 

pallet container unloading costs, as well 

as additional costs for parcel machine 

processing and manual processing’’ 

along with ‘‘[c]osts for the loading and 

unloading of Postal Service hampers of 

sorted parcels[.]’’ Id. The new mail flow 

uses the same delivery unit cost for 

secondary parcel sortation as the 

existing 5-digit presorted DHub mail 

flow. Id. A second, similar new mail 

flow is included in the proposed cost 

model for DHub non-presort PSLW 

which uses delivery unit costs specific 

to PSLW. See id. 

Impact. The Postal Service 

emphasizes that existing mail 

processing unit costs are, in general, not 

impacted by the Proposal, which 

instead introduces two new cost 

estimates. Id. at 4. The Postal Service 

notes that adoption of the Proposal 

would not have had any effect on FY 

2023 costs at the Cost and Revenue 

Analysis (CRA) level, and that the 

approved NSAs that include a provision 

for DHub-entered packages had no such 

volume in FY 2024. Id. 

III. Notice and Comment 

The Commission establishes Docket 

No. RM2025–2 for consideration of 

matters raised by the Petition. More 

information on the Petition may be 

accessed via the Commission’s website 

at http://www.prc.gov. Interested 

persons may submit comments on the 

Petition and the Proposal no later than 

November 27, 2024. Pursuant to 39 

U.S.C. 505, Arif Hafiz is designated as 

an officer of the Commission (Public 

Representative) to represent the 

interests of the general public in this 

proceeding. 

IV. Ordering Paragraphs 

It is ordered: 

1. The Commission establishes Docket 

No. RM2025–2 for consideration of the 

matters raised by the Petition of the 

United States Postal Service to Initiate 

a Proceeding to Change Analytical 

Principles and Notice of Filing NonPublic Materials, filed October 22, 2024. 

2. Comments by interested persons in 

this proceeding are due no later than 

November 27, 2024. 

3. Pursuant to 39 U.S.C. 505, the 

Commission appoints Arif Hafiz to serve 

as an officer of the Commission (Public 

Representative) to represent the 

interests of the general public in this 

docket. 

4. The Secretary shall arrange for the 

publication of this order in the Federal 

Register. 

By the Commission. 

Erica A. Barker, 

Secretary. 

[FR Doc. 2024–25401 Filed 10–31–24; 8:45 am] 

BILLING CODE 7710–FW–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 52 

[EPA–R06–OAR–2021–0539; FRL–12282– 

03–R6] 

Air Quality State Implementation 

Plans; Partial Approval, Partial 

Disapproval and Promulgation; Texas; 

Regional Haze; Extension of Comment 

Period 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Proposed rule; extension of 

comment period. 

SUMMARY: The Environmental Protection 

Agency (EPA) is extending the comment 

period for the proposed rule ‘‘Air 

Quality State Implementation Plans; 

Partial Approval, Partial Disapproval 

and Promulgation; Texas; Regional 

Haze’’ that was published on October 

15, 2024. The proposal provided for a 

public comment period ending 

November 14, 2024. In response to 

requests for additional time to develop 

and submit comments on the proposed 

rulemaking, the EPA is extending the 

comment period to December 3, 2024. 

DATES: The comment period for the 

proposed rule published on October 15, 

2024, at 89 FR 83338 is extended. 

Comments must be received on or 

before December 3, 2024. 

ADDRESSES: Submit your comments, 

identified by Docket No. EPA–R06– 


khammond on DSKJM1Z7X2PROD with PROPOSALS