Federal Register / Vol. 87, No. 25 / Monday, February 7, 2022 / Rules and Regulations 6777 

when a debt ratio waiver may be 

granted. The automated underwriting 

system will consider any compensating 

factors in determining when the 

variance is appropriate. Loans 

downgraded in the automated 

underwriting system which must be 

manually underwritten will require the 

lender to document compensating 

factors. The presence of compensating 

factors does not strengthen a ratio 

exception when multiple layers of risk 

are present in the application. 

Acceptable compensating factors, 

supporting documentation, and 

maximum ratio thresholds, will be 

further defined and clarified in the 

handbook. Compensating factors 

include but are not limited to: 

* * * * * 

Joaquin Altoro, 

Administrator, Rural Housing Service. 

[FR Doc. 2022–02467 Filed 2–4–22; 8:45 am] 

BILLING CODE 3410–XV–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0791; Project 

Identifier AD–2021–00716–E; Amendment 

39–21881; AD 2021–26–22] 

RIN 2120–AA64 

Airworthiness Directives; General 

Electric Company Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2020–20– 

13 for certain General Electric Company 

(GE) CF6–80A and CF6–80C model 

turbofan engines. AD 2020–20–13 

required ultrasonic inspection (UI) of 

high-pressure turbine (HPT) stage 1 and 

stage 2 disks and replacement of any 

HPT stage 1 or stage 2 disk that fails the 

inspection. This AD was prompted by 

an uncontained failure of an HPT stage 

2 disk and the manufacturer’s 

subsequent determination to expand the 

population of affected HPT disks 

requiring UI inspection. This AD 

requires UI of HPT stage 1 and stage 2 

disks and replacement of any HPT stage 

1 or stage 2 disk that fails the 

inspection. This AD also expands the 

applicability to include an additional 

population of affected HPT stage 1 and 

2 disks requiring UI inspection. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective March 14, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of March 14, 2022. 

ADDRESSES: For service information 

identified in this final rule, contact 

General Electric Company, 1 Neumann 

Way, Cincinnati, OH 45215; phone: 

(513) 552–3272; email: 

aviation.fleetsupport@ge.com; website: 

www.ge.com. You may view this service 

information at the Airworthiness 

Products Section, Operational Safety 

Branch, FAA, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. It is also 

available at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0791. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0791; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

final rule, any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Sungmo Cho, Aviation Safety Engineer, 

ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: 

(781) 238–7241; fax: (781) 238–7199; 

email: Sungmo.D.Cho@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2020–20–13, 

Amendment 39–21269 (85 FR 63193, 

October 7, 2020), (AD 2020–20–13). AD 

2020–20–13 applied to certain GE CF6– 

80A, CF6–80A1, CF6–80A2, CF6–80A3, 

CF6–80C2A1, CF6–80C2A2, CF6– 

80C2A3, CF6–80C2A5, CF6–80C2A5F, 

CF6–80C2A8, CF6–80C2B1, CF6– 

80C2B1F, CF6–80C2B2, CF6–80C2B2F, 

CF6–80C2B4, CF6–80C2B4F, CF6– 

80C2B5F, CF6–80C2B6, CF6–80C2B6F, 

CF6–80C2B6FA, CF6–80C2B7F, CF6– 

80C2D1F, CF6–80C2L1F, and CF6– 

80C2K1F model turbofan engines. The 

NPRM published in the Federal 

Register on October 6, 2021 (86 FR 

55545). The NPRM was prompted by an 

uncontained failure of an HPT stage 2 

disk and the manufacturer’s 

determination to expand the population 

of affected HPT disks requiring UI 

inspection. After the FAA issued AD 

2020–20–13, the manufacturer 

discovered an error in the service 

information and determined that the 

requirement to perform UI of affected 

HPT stage 1 and 2 disks should be 

expanded to include an additional 

population of HPT stage 1 and stage 2 

disks. GE, therefore, revised its service 

information to include the additional 

affected HPT stage 1 and stage 2 disks. 

In the NPRM, the FAA proposed to 

continue to require UI of HPT stage 1 

and stage 2 disks and replacement of 

any HPT stage 1 or stage 2 disk that fails 

the inspection. In the NPRM, the FAA 

also proposed to expand the 

applicability to include an additional 

population of affected HPT stage 1 and 

2 disks. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

two commenters. Commenters included 

the Air Line Pilots Association, 

International and FedEx Express. All 

commenters supported the NPRM 

without change. 

Conclusion 

The FAA reviewed the relevant data, 

considered the comments received, and 

determined that air safety requires 

adopting the AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, this AD is adopted as proposed 

in the NPRM. None of the changes will 

increase the economic burden on any 

operator. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed GE CF6–80C 

Service Bulletin (SB) 72–1562 R05, 

dated March 19, 2021. This SB specifies 

procedures for UI of CF6–80C2 turbofan 

engine HPT stage 1 and 2 disks. The 

FAA also reviewed GE CF6–80A SB 72– 

0869 R03, dated March 19, 2021. This 

SB specifies procedures for UI of CF6– 

80A turbofan engine HPT stage 2 disks. 

These documents are distinct since they 

apply to different engine models. This 

service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in ADDRESSES. 


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6778 Federal Register / Vol. 87, No. 25 / Monday, February 7, 2022 / Rules and Regulations 

Costs of Compliance 

The FAA estimates that this AD 

affects 1,512 engines installed on 

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 

UI of HPT stage 1 and stage 2 disks ............. 10 work-hours × $85 per hour = $850 ........... $0 $850 $1,285,200 

The FAA estimates the following 

costs to do any necessary replacements 

that would be required based on the 

results of the inspection. The agency has 

no way of determining the number of 

aircraft that might need these 

replacements: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Replace CF6–80C2 HPT stage 1 disk ......................... 0.25 work-hours × $85 per hour = $21.25 ................... $799,700 $799,721.25 

Replace CF6–80C2 HPT stage 2 disk ......................... 0.25 work-hours × $85 per hour = $21.25 ................... 364,600 364,621.25 

Replace CF6–80A HPT stage 2 disk ........................... 0.25 work-hours × $85 per hour = $21.25 ................... 344,000 344,021.25 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

Section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701, General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

The FAA has determined that this AD 

will not have federalism implications 

under Executive Order 13132. This AD 

will not have a substantial direct effect 

on the States, on the relationship 

between the national government and 

the States, or on the distribution of 

power and responsibilities among the 

various levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

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 

2020–20–13, Amendment 39–21269 (85 

FR 63193, October 7, 2020); and 

■ b. Adding the following new 

airworthiness directive: 

2021–26–22 General Electric Company: 

Amendment 39–21881; Docket No. 

FAA–2021–0791; Project Identifier AD– 

2021–00716–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 14, 2022. 

(b) Affected ADs 

This AD replaces AD 2020–20–13, 

Amendment 39–21269 (85 FR 63193, October 

7, 2020). 

(c) Applicability 

This AD applies to General Electric 

Company (GE) CF6–80A, CF6–80A1, CF6– 

80A2, CF6–80A3, CF6–80C2A1, CF6– 

80C2A2, CF6–80C2A3, CF6–80C2A5, CF6– 

80C2A5F, CF6–80C2A8, CF6–80C2B1, CF6– 

80C2B1F, CF6–80C2B2, CF6–80C2B2F, CF6– 

80C2B4, CF6–80C2B4F, CF6–80C2B5F, CF6– 

80C2B6, CF6–80C2B6F, CF6–80C2B6FA, 

CF6–80C2B7F, CF6–80C2D1F, CF6– 

80C2L1F, and CF6–80C2K1F model turbofan 

engines with an installed high-pressure 

turbine (HPT) disk with a serial number (S/ 

N) listed in Table 1 or 2 of Appendix A, 

paragraph 4., in GE CF6–80C2 Service 

Bulletin (SB) 72–1562 R05, dated March 19, 

2021 (GE SB 72–1562), and Table 1 of 

Appendix—A, paragraph 4., in GE CF6–80A 

SB 72–0869 R03, dated March 19, 2021 (GE 

SB 72–0869). 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by an uncontained 

failure of an HPT stage 2 disk and the 

manufacturer’s determination to expand the 

population of affected HPT disks requiring 

ultrasonic inspection (UI). The FAA is 

issuing this AD to prevent failure of the HPT 

stage 1 disk (CF6–80C2 engines) and the HPT 

stage 2 disk (CF6–80C2 and CF6–80A 

engines). The unsafe condition, if not 

addressed, could result in an uncontained 

HPT disk release, damage to the engine, and 

damage to the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

(1) For CF6–80C2 model turbofan engines, 

at each piece-part exposure after the effective 


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Federal Register / Vol. 87, No. 25 / Monday, February 7, 2022 / Rules and Regulations 6779 

date of this AD, perform a UI of affected HPT 

stage 1 and stage 2 disks using the 

Accomplishment Instructions, paragraph 

3.A.(2), of GE SB 72–1562. 

(2) For CF6–80A model turbofan engines, 

at each piece-part exposure after the effective 

date of this AD, perform a UI of affected HPT 

stage 2 disks using the Accomplishment 

Instructions, paragraph 3.A.(2), of GE SB 72– 

0869. 

(3) If any disk fails the inspection required 

by paragraph (g)(1) or (2) of this AD, replace 

the disk with a part eligible for installation 

before further flight. 

(h) No Reporting Requirements 

The reporting requirements specified in the 

Accomplishment Instructions, paragraphs 

3.A.(2)(c) and 3.A.(2)(f), of GE SB 72–1562, 

and paragraph 3.A.(3), of GE SB 72–0869, are 

not required by this AD. 

(i) Definitions 

(1) For the purpose of this AD, a ‘‘part 

eligible for installation’’ is an HPT stage 1 or 

stage 2 disk: 

(i) That has been inspected in accordance 

with paragraph (g)(1) or (2) of this AD and 

a rejectable indication was not found; or 

(ii) With an S/N not listed in Table 1 or 2 

of Appendix A, paragraph 4., in GE SB 72– 

1562, or Table 1 of Appendix—A, paragraph 

4., in GE SB 72–0869. 

(2) For the purpose of this AD, ‘‘piece-part 

exposure’’ of the HPT stage 1 or stage 2 disk 

is the separation of that HPT disk from its 

mating rotor parts within the HPT rotor 

module (thermal shield and HPT stage 1 and 

stage 2 disk, respectively). 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, ECO Branch, FAA, has 

the authority to approve AMOCs for this AD, 

if requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (k) of this AD. 

Information may be emailed to: ANE-ADAMOC@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. 

(k) Related Information 

For more information about this AD, 

contact Sungmo Cho, Aviation Safety 

Engineer, ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: (781) 

238–7241; fax: (781) 238–7199; email: 

Sungmo.D.Cho@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) GE CF6–80C Service Bulletin (SB) 72– 

1562 R05, dated March 19, 2021. 

(ii) GE CF6–80A SB 72–0869 R03, dated 

March 19, 2021. 

(3) For GE service information identified in 

this AD, contact General Electric Company, 

1 Neumann Way, Cincinnati, OH 45215; 

phone: (513) 552–3272; email: 

aviation.fleetsupport@ge.com; website: 

www.ge.com. 

(4) You may view this service information 

at 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. 

(5) You may view this service information 

that is incorporated by reference at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

email: fr.inspection@nara.gov, or go to: 

https://www.archives.gov/federal-register/cfr/ 

ibr-locations.html. 

Issued on December 16, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–02455 Filed 2–4–22; 8:45 am] 

BILLING CODE 4910–13–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 180 

[EPA–HQ–OPP–2017–0541; FRL–9418–01– 

OCSPP] 

2-Isobutyl-2-methyl-1,3-dioxolane-4- 

methanol; Exemption From the 

Requirement of a Tolerance 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Final rule. 

SUMMARY: This regulation establishes an 

exemption from the requirement of a 

tolerance for residues of 2-isobutyl-2- 

methyl-1,3-dioxolane-4-methanol (CAS 

Reg. No. 5660–53–7) when used as an 

inert ingredient (solvent/cosolvent) on 

growing crops and raw agricultural 

commodities after harvest, and in 

antimicrobial formulations applied to 

food-contact surfaces in public eating 

places, dairy-processing equipment, and 

food-processing equipment and utensils. 

SciReg, Inc., on behalf of Solvay USA 

Inc., submitted a petition to EPA under 

the Federal Food, Drug, and Cosmetic 

Act (FFDCA), requesting establishment 

of an exemption from the requirement of 

a tolerance. This regulation eliminates 

the need to establish a maximum 

permissible level for residues of 2- 

isobutyl-2-methyl-1,3-dioxolane-4- 

methanol, when used in accordance 

with the terms of those exemptions. 

DATES: This regulation is effective 

February 7, 2022. Objections and 

requests for hearings must be received 

on or before April 8, 2022, and must be 

filed in accordance with the instructions 

provided in 40 CFR part 178 (see also 

Unit I.C. of the SUPPLEMENTARY

INFORMATION). 

ADDRESSES: The docket for this action, 

identified by docket identification (ID) 

number EPA–HQ–OPP–2017–0541, is 

available at https://www.regulations.gov 

or at the Office of Pesticide Programs 

Regulatory Public Docket (OPP Docket) 

in the Environmental Protection Agency 

Docket Center (EPA/DC), West William 

Jefferson Clinton Bldg., Rm. 3334, 1301 

Constitution Ave. NW, Washington, DC 

20460–0001. The Public Reading Room 

is open from 8:30 a.m. to 4:30 p.m., 

Monday through Friday, excluding legal 

holidays. The telephone number for the 

Public Reading Room is (202) 566–1744, 

and the telephone number for the OPP 

Docket is (703) 305–5805. 

Due to the public health concerns 

related to COVID–19, the EPA Docket 

Center (EPA/DC) and Reading Room is 

closed to visitors with limited 

exceptions. The staff continues to 

provide remote customer service via 

email, phone, and webform. For the 

latest status information on EPA/DC 

services and docket access, visit https:// 

www.epa.gov/dockets. 

FOR FURTHER INFORMATION CONTACT: 

Marietta Echeverria, Registration 

Division (7505P), Office of Pesticide 

Programs, Environmental Protection 

Agency, 1200 Pennsylvania Ave. NW, 

Washington, DC 20460–0001; main 

telephone number: (703) 305–7090; 

email address: RDFRNotices@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. Does this action apply to me? 

You may be potentially affected by 

this action if you are an agricultural 

producer, food manufacturer, or 

pesticide manufacturer. The following 

list of North American Industrial 

Classification System (NAICS) codes is 

not intended to be exhaustive, but rather 

provides a guide to help readers 

determine whether this document 

applies to them. Potentially affected 

entities may include: 

• Crop production (NAICS code 111). 

• Animal production (NAICS code 

112). 

• Food manufacturing (NAICS code 

311). 

• Pesticide manufacturing (NAICS 

code 32532). 


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