This section of the FEDERAL REGISTER
contains regulatory documents having generalapplicability and legal effect, most of whichare keyed to and codified in the Code ofFederal Regulations, which is published under50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by
the Superintendent of Documents.Rules and RegulationsFederal Register73215 
Vol. 88, No. 205 
Wednesday, October 25, 2023 
DEPARTMENT OF ENERGY 
10 CFR Parts 429 and 431 
[EERE–2017–BT–TP–0010] 
RIN 1904–AD78 
Energy Conservation Program: Test 
Procedure for Walk-In Coolers and Walk-In Freezers; Correction 
AGENCY : Office of Energy Efficiency and 
Renewable Energy, Department of Energy. 
ACTION : Final rule; correcting 
amendments. 
SUMMARY : On May 4, 2023, the U.S. 
Department of Energy (‘‘DOE’’) published a final rule adopting test procedures for walk-in coolers and walk-in freezers. This document corrects errors and omissions in that final rule. Neither the errors and omissions nor the corrections affect the substance of the rulemaking or any conclusions reached in support of the final rule. 
DATES : Effective October 25, 2023. 
FOR FURTHER INFORMATION CONTACT : 
Mr. Troy Watson, U.S. Department of 
Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Office, EE–5B, 1000 Independence Avenue SW, Washington, DC 20585–0121. Telephone: (240) 449– 9387. Email: ApplianceStandardsQuestions@ee.doe.gov. 
Mr. Matthew Schneider, U.S. 
Department of Energy, Office of the General Counsel, GC–33, 1000 Independence Avenue SW, Washington, DC 20585–0121. Telephone: (240) 597– 6265. Email: matthew.schneider@hq.doe.gov. 
SUPPLEMENTARY INFORMATION : 
I. Background 
On May 4, 2023, DOE published a 
final rule (‘‘May 2023 Final Rule’’) amending the test procedures for walk- in coolers and freezers (‘‘walk-ins’’) at title 10 of the Code of Federal Regulations (‘‘CFR’’) part 431, subpart R, appendices A, B, C, and C1 (hereafter referred to as ‘‘appendix A’’, ‘‘appendix B’’, ‘‘appendix C’’, and ‘‘appendix C1’’, respectively). 88 FR 28780. Since publication of the May 2023 Final Rule, DOE has identified errors and omissions in the regulatory text established by that final rule. DOE is issuing this rule to correct certain errors and omissions in the May 2023 Final Rule, specifically in 10 CFR 429.70 and appendices A, B, C, and C1, and to assist regulated entities with compliance efforts. The corrections are described in the following paragraphs. 
In 10 CFR 429.70(f)(5)(vi), Table 7 of 
the regulatory text in the May 2023 Final Rule was erroneously labeled as ‘‘Table 7 to Paragraph (f)(5)(iv),’’ whereas it should have been labeled as ‘‘Table 7 to Paragraph (f)(5)(vi)’’. 88 FR 28780, 28837. This document corrects the typographical error. 
Section 5.2.1 of appendix A as 
finalized by the May 2023 Final Rule erroneously instructs the reader to determine standardized thermal transmittance per section 5.1.1 of appendix A. 88 FR 28780, 28840. However, there is no section 5.1.1 of appendix A; this should instead reference section 5.1 of appendix A. This document corrects this typographical error. 
In the May 2023 Final Rule preamble 
text, DOE states that it is maintaining the current requirement that testing be completed within 24 hours of cutting a test specimen from the envelope components. 88 FR 28780, 28800. However, this requirement was erroneously omitted from the regulatory text in appendix B. Section 5.3 of appendix B should instruct the reader that ‘‘Testing must be completed within 24 hours of samples being cut for testing per section 5.2.5 of this appendix’’. This document corrects this inadvertent omission. 
Section 5.2.5.7 of appendix B as 
finalized by May 2023 Final Rule erroneously instructs the reader ‘‘To determine the parallelism of the specimen for side 2, repeat section’’ while omitting which section to repeat. 88 FR 28780, 28845. Section 5.2.5.7 should state ‘‘To determine the parallelism of the specimen for side 2, repeat section 5.2.5.6 of this appendix’’. This document corrects this inadvertent omission. 
In the May 2023 Final Rule regulatory 
text, the seventh column of table 17 in appendix C and table 5 in appendix C1 erroneously specify that the compressor capacity or operating mode of the ‘‘Off- Cycle Power’’ test shall be ‘‘Compressor On’’ and that the compressor capacity or operating mode of ‘‘Refrigeration Capacity, Ambient Condition A’’ test shall be ‘‘Compressor Off’’. 88 FR 28780, 28846, 28851–28852. These labels in the seventh column should be switched such that the ‘‘Off-Cycle Power’’ test is labeled as ‘‘Compressor Off’’ and the ‘‘Refrigeration Capacity, Ambient Condition A’’ test is labeled as ‘‘Compressor On’’. This document corrects these typographical errors. 
In the May 2023 Final Rule regulatory 
text, the table for Test Operating Conditions for Medium-Temperature CO
2Unit Coolers in appendix C is 
erroneously labeled as Table 17. 88 FR 28780, 28846. In appendix C, Table 15 and Table 16 provide modifications to Table 15 and Table 16 included in the referenced industry standard, AHRI 1250–2009 ‘‘Standard for Performance Rating of Walk-in Coolers and Freezers.’’ Because these tables do not represent table numbering within appendix C, subsequent tables only included in appendix C (i.e., Tables 17 
through 19 and the final Table 1, discussed in the following paragraphs) should not continue with the AHRI 1250–2009 table numbering approach and should provide distinct table labels. To address this error and to avoid confusion with the table numbering referencing AHRI 1250–2009, Table 17 as well as the references thereto should instead be labeled as Table C.1. This document corrects this typographical error. 
Similarly, in the May 2023 Final Rule 
regulatory text, the table for Test Operating Conditions for Low- Temperature CO
2Unit Coolers in 
appendix C is erroneously labeled as Table 18. Id. This table as well as the 
references thereto should instead be labeled as Table C.2. This document corrects this typographical error. 
In the May 2023 Final Rule regulatory 
text, the table for Test Operating Conditions for High-Temperature Unit Coolers in appendix C is erroneously labeled as Table 19. Id. This table as 
well as the references thereto should 
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instead be labeled as Table C.3. This 
document corrects this typographical error. 
In the May 2023 Final Rule regulatory 
text, the table for Test Condition Tolerances and Hierarchy for Refrigerant Charging and Setting of Refrigerant Conditions is erroneously labeled as Table 1. 88 FR 28780, 28847– 28848. This table should instead be labeled as Table C.4. This document corrects this typographical error. 
In the May 2023 Final Rule regulatory 
text, in the first column from the left of table 3 to appendix C1, rows three, five, and seven erroneously included a table note numbered five at the end of each ‘‘Test description’’. 88 FR 28780, 28851. There is no table note that corresponds to note five in this table, however. This document corrects this error. 
In the May 2023 Final Rule regulatory 
text, in the sixth column from the left of table 9 to appendix C1, row nine has ‘‘Compressor operating mode’’ erroneously specified as ‘‘Maximum Capacity, k=2’’. 88 FR 28780, 28853. This label should instead read ‘‘High Capacity, k=2’’. This document corrects this error. 
In the May 2023 Final Rule regulatory 
text, in the sixth column from the left of table 13 to appendix C1, rows three, seven, and eleven have ‘‘Compressor operating mode’’ erroneously specified as ‘‘Minimum Capacity, k=i’’. 88 FR 28780, 28854. These labels should instead read ‘‘Intermediate Capacity, k=i’’. This document corrects this error. 
In the May 2023 Final Rule regulatory 
text, in the sixth column of table 14 to appendix C1, row 2 has ‘‘Compressor operating mode’’ erroneously specified as ‘‘Minimum Capacity, k=i’’. Id. This 
label should instead read ‘‘Intermediate Capacity, k=i’’. This document corrects this error. 
II. Need for Correction 
As published, the regulatory text in 
May 2023 Final Rule may lead to 
confusion in the execution of the DOE test procedure for walk-ins due to incorrect table labeling, omitted section references, and extraneous footnotes. Because this final rule would simply correct errors and omissions in the text without making substantive changes to test procedures adopted in the May 2023 Final Rule, the changes addressed in this document are technical in nature. 
III. Procedural Issues and Regulatory 
Review 
DOE has concluded that the 
determinations made pursuant to the various procedural requirements applicable to the May 2023 Final Rule remain unchanged for these final rule technical corrections. These determinations are set forth in the May 2023 Final Rule. 88 FR 28780, 28827– 28834. 
Pursuant to the Administrative 
Procedure Act, 5 U.S.C. 553(b), DOE finds that there is good cause to not issue a separate notice to solicit public comment on those technical corrections contained in this document. Issuing a separate notice to solicit public comment would be impracticable, unnecessary, and contrary to the public interest. As explained previously, the corrections in this document do not affect the substance of or any of the conclusions reached in support of the May 2023 Final Rule. Additionally, given the May 2023 Final Rule is a product of an extensive administrative record with numerous opportunities for public comment, DOE finds additional comment on the technical corrections is unnecessary. Therefore, providing prior notice and an opportunity for public comment on correcting objective errors and omissions that do not change the substance of the test procedure serves no useful purpose. 
Further, this rule correcting errors and 
omissions makes non-substantive changes to the test procedure in the May 2023 Final Rule. As such, this rule is not subject to the 30-day delay in effective date requirement of 5 U.S.C. 553(d) otherwise applicable to rules that make substantive changes. 
List of Subjects 10 CFR Part 429 
Administrative practice and 
procedure, Confidential business 
information, Energy conservation, Household appliances, Imports, Intergovernmental relations, Reporting and recordkeeping requirements, Small businesses. 
10 CFR Part 431 
Administrative practice and 
procedure, Confidential business 
information, Energy conservation test procedures, Incorporation by reference, and Reporting and recordkeeping requirements. 
Signing Authority 
This document of the Department of 
Energy was signed on August 23, 2023, 
by Francisco Alejandro Moreno, Acting Assistant Secretary for Energy Efficiency and Renewable Energy, U.S. Department of Energy, pursuant to delegated authority from the Secretary of Energy. That document with the original signature and date is maintained by DOE. For administrative purposes only, and in compliance with requirements of the Office of the Federal Register, the undersigned DOE Federal Register Liaison Officer has been authorized to sign and submit the document in electronic format for publication, as an official document of the Department of Energy. This administrative process in no way alters the legal effect of this document upon publication in the Federal Register. 
Signed in Washington, DC, on August 23, 
2023. 
Treena V. Garrett, Federal Register Liaison Officer, U.S. 
Department of Energy. 
For the reasons stated in the 
preamble, DOE corrects part 429 and 
431 of chapter II of title 10 of the Code of Federal Regulations by making the following correcting amendments: 
PART 429—CERTIFICATION, 
COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT 
■1. The authority citation for part 429 
continues to read as follows: 
Authority: 42 U.S.C. 6291–6317; 28 U.S.C. 
2461 note. 
■2. Amend § 429.70 by revising the 
heading for the table in paragraph (f)(5)(vi) to read as follows: 
§ 429.70 Alternative methods for 
determining energy efficiency and energy use. 
* * * * * 
(f) * * * 
(5) * * * (vi) * * * 
Table 7 to Paragraph (f)(5)(vi) 
* * * * * 
PART 431—ENERGY EFFICIENCY 
PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT 
■3. The authority citation for part 431 
continues to read as follows: 
Authority: 42 U.S.C. 6291–6317; 28 U.S.C. 
2461 note. 
■4. Appendix A to subpart R of part 
431 is amended by revising section 5.2.1 to read as follows: 
Appendix A to Subpart R of Part 431— 
Uniform Test Method for the Measurement of Energy Consumption of the Components of Envelopes of Walk- In Coolers and Walk-In Freezers 
* * * * * 
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5. * * * 
5.2 * * * 
5.2.1 For display doors and display 
panels, thermal transmittance, U ddor U dp, 
respectively, shall be the standardized 
thermal transmittance, U ST, determined per 
section 5.1 of this appendix. 
* * * * * 
■5. Appendix B to subpart R of part 431 
is amended by revising sections 5.2.5.7 
and 5.3 to read as follows: 
Appendix B to Subpart R of Part 431— 
Uniform Test Method for the Measurement of R-Value of Insulation for Envelope Components of Walk-In Coolers and Walk-In Freezers 
* * * * * 
5. * * * 
5.2 * * * 
5.2.5 * * * 5.2.5.7 To determine the parallelism of 
the specimen for side 2, repeat section 5.2.5.6 
of this appendix. 
* * * * * 
5.3 K-factor Test. Determine the thermal 
conductivity, or K-factor, of the 1-inch-thick specimen in accordance with the specified sections of ASTM C518–17. Testing must be completed within 24 hours of the specimen being cut for testing per section 5.2.5 of this appendix. 
* * * * * 
■6. Appendix C to subpart R of part 431 
is amended by: 
■a. In section 3.1.6: 
■i. Removing the words ‘‘table 17’’ and 
adding in its place, the words ‘‘table 
C.1’’ wherever they appear; 
■ii. Revising the newly designated table 
C.1; 
■iii. Removing the words ‘‘table 18’’ 
and adding in its place, the words ‘‘table C.2’’ wherever they appear; ■b. In section 3.1.7, removing the 
words ‘‘table 19’’ and adding in its 
place, the words ‘‘table C.3’’ wherever they appear; 
■c. In section 3.2.7.1, removing the 
words ‘‘table 1’’ and adding in its place, 
the words ‘‘table C.4’’ wherever they appear. 
The revision reads as follows: 
Appendix C to Subpart R of Part 431— 
Uniform Test Method for the Measurement of Net Capacity and AWEF of Walk-In Cooler and Walk-In Freezer Refrigeration Systems 
* * * * * 
3. * * * 
3.1. * * * 
3.1.6 * * * 
TABLE C.1—T ESTOPERATING CONDITIONS FOR MEDIUM -TEMPERATURE CO 2UNITCOOLERS  
Test description Unit cooler 
air entering 
dry-bulb, 
°F Unit cooler 
air entering 
relative 
humidity, 
% Suction 
dew 
point 
temp, 
°F Liquid 
inlet 
bubble point 
temperature 
°F Liquid 
inlet 
subcooling, 
°F Compressor 
capacity Test objective 
Off-Cycle Power ............ 35 <50 .................... ...................... ...................... Compressor Off ... Measure fan input power during com-
pressor off-cycle. 
Refrigeration Capacity, 
Ambient Condition A.35 <50 25 38 5 Compressor On ... Determine Net Refrigeration Capacity of 
Unit Cooler. 
Notes: 
1Superheat shall be set as indicated in the installation instructions. If no superheat specification is given a default superheat value of 6.5 °F shall be used. 
■7. Appendix C1 to subpart R of part 
431 is amended by: 
■a. In section 3.2.1, revising table 3; 
■b. In section 3.2.2, revising table 5; 
■c. In section 3.2.3, revising table 9; 
and 
■d. In section 3.2.4, revising tables 13 
and 14. The revisions read as follows: 
Appendix C1 to Subpart R of Part 431— 
Uniform Test Method for the Measurement of Net Capacity and AWEF2 of Walk-In Cooler and Walk-In Freezer Refrigeration Systems 
* * * * * 3. * * * 
3.2. * * * 
3.2.1. * * * 
TABLE 3—T ESTOPERATING CONDITIONS FOR FIXED-CAPACITY HIGH-TEMPERATURE OUTDOOR MATCHED -PAIR OR  
SINGLE -PACKAGED REFRIGERATION SYSTEMS  
Test 
description Unit cooler 
air entering 
dry-bulb, 
°F Unit cooler 
air entering 
relative 
humidity, 
%1 Condenser 
air entering 
dry-bulb, 
°F Condenser 
air entering 
wet-bulb, 
°F Compressor 
status Test objective 
Refrigeration Capacity A .......... 55 55 95 375, 468 Compressor On ... Determine Net Refrigeration Capacity of Unit Cool-
er, input power, and EER at Test Condition. 
Off-Cycle Power, Capacity A ... 55 55 95 375, 468 Compressor Off ... Measure total input wattage during compressor off- 
cycle, ( E ˙cu,off + E˙Fcomp,off )2. 
Refrigeration Capacity B .......... 55 55 59 354, 446 Compressor On ... Determine Net Refrigeration Capacity of Unit Cool-
er and system input power at moderate condi-
tion. 
Off-Cycle Power, Capacity B ... 55 55 59 354, 446 Compressor Off ... Measure total input wattage during compressor off- 
cycle, (E ˙cu,off + E˙Fcomp,off )2. 
Refrigeration Capacity C .......... 55 55 35 334, 429 Compressor On ... Determine Net Refrigeration Capacity of Unit Cool-
er and system input power at cold condition. 
Off-Cycle Power, Capacity C ... 55 55 35 334, 429 Compressor Off ... Measure total input wattage during compressor off- 
cycle, (E ˙cu,off + E˙Fcomp,off )2. 
Notes: 
1The test condition tolerance (maximum permissible variation of the average value of the measurement from the specified test condition) for relative humidity is 3%. 
2Measure off-cycle power as described in sections C3 and C4.2 of AHRI 1250–2020. 
3Required only for evaporative condensing units (e.g., incorporates a slinger ring). 
4Maximum allowable value for Single-Packaged Systems that do not use evaporative Dedicated Condensing Units, where all or part of the equipment is located in 
the outdoor room. 
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* * * * * 
3.2.2 * * * 3.2.2 * * * 
TABLE 5—T ESTOPERATING CONDITIONS1FORMEDIUM -TEMPERATURE CO 2UNITCOOLERS  
Test title Unit cooler 
air entering 
dry-bulb, 
°F Unit cooler 
air entering 
relative 
humidity, 
% Suction 
dew point 
temp,3 
°F Liquid inlet 
bubble point 
temperature, 
°F Liquid inlet 
subcooling, 
°F Compressor 
operating mode Test objective 
Off-Cycle Power ............ 35 <50 .................... ........................ .................... Compressor Off ... Measure unit cooler input wattage during 
compressor off-cycle, E ˙Fcomp,off2. 
Refrigeration Capacity, 
Ambient Condition A.35 <50 25 38 5 Compressor On ... Determine Net Refrigeration Capacity of 
Unit Cooler, q ˙mix,rack  
Notes: 
1Superheat shall be set as indicated in the installation instructions. If no superheat specification is given a default superheat value of 6.5 °F shall be used. 
2Measure off-cycle power as described in sections C3 and C4.2 of AHRI 1250–2020. 
3Suction Dew Point shall be measured at the Unit Cooler Exit conditions. 
* * * * * 3.2.3 * * * 
TABLE 9—T ESTOPERATING CONDITIONS FOR TWO-CAPACITY LOW-TEMPERATURE OUTDOOR DEDICATED CONDENSING  
UNITS 
Test title Suction 
dew point, 
°F Return gas, 
°F Condenser 
air entering 
dry-bulb, 
°F Condenser 
air entering 
wet-bulb, 
°F1 Compressor operating mode 
Capacity, Condition A, Low Capacity ¥22 5 95 75 Low Capacity, k=1. 
Capacity, Condition A, High Capacity ¥22 5 95 75 High Capacity, k=2. 
Off-Cycle, Condition A ...................... ........................ ........................ 95 75 Compressor Off. 
Capacity, Condition B, Low Capacity ¥22 5 59 54 Low Capacity, k=1. 
Capacity, Condition B, High Capacity ¥22 5 59 54 High Capacity, k=2. 
Off-Cycle, Condition B ...................... ........................ ........................ 59 54 Compressor Off. 
Capacity, Condition C, Low Capacity ¥22 5 35 34 Low Capacity, k=1. 
Capacity, Condition C, High Capac-
ity.¥22 5 35 34 High Capacity, k=2. 
Off-Cycle, Condition C ...................... ........................ ........................ 35 34 Compressor Off. 
Notes: 
1Required only for evaporative condensing units (e.g., incorporates a slinger ring). 
* * * * * 3.2.4 * * * 
TABLE 13—T ESTOPERATING CONDITIONS FOR VARIABLE - ORMULTIPLE -CAPACITY LOW-TEMPERATURE OUTDOOR  
DEDICATED CONDENSING UNITS 
Test title Suction 
dew point, 
°F Return gas, 
°F Condenser 
air entering 
dry-bulb, 
°F Condenser 
air entering 
wet-bulb, 
°F1 Compressor operating mode 
Capacity, Condition A, Minimum Ca-
pacity.¥22 5 95 75 Minimum Capacity, k=1. 
Capacity, Condition A, Intermediate 
Capacity.¥22 5 95 75 Intermediate Capacity, k=i. 
Capacity, Condition A, Maximum Ca-
pacity.¥22 5 95 75 Maximum Capacity, k=2. 
Off-Cycle, Condition A ...................... ........................ ........................ 95 75 Compressor Off. 
Capacity, Condition B, Minimum Ca-
pacity.¥22 5 59 54 Minimum Capacity, k=1. 
Capacity, Condition B, Intermediate 
Capacity.¥22 5 59 54 Intermediate Capacity, k=i. 
Capacity, Condition B, Maximum Ca-
pacity.¥22 5 59 54 Maximum Capacity, k=2. 
Off-Cycle, Condition B ...................... ........................ ........................ 59 54 Compressor Off. 
Capacity, Condition C, Minimum Ca-
pacity.¥22 5 35 34 Minimum Capacity, k=1. 
Capacity, Condition C, Intermediate 
Capacity.¥22 5 35 34 Intermediate Capacity, k=i. 
Capacity, Condition C, Maximum 
Capacity.¥22 5 35 34 Maximum Capacity, k=2. 
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TABLE 13—T ESTOPERATING CONDITIONS FOR VARIABLE - ORMULTIPLE -CAPACITY LOW-TEMPERATURE OUTDOOR  
DEDICATED CONDENSING UNITS—Continued 
Test title Suction 
dew point, 
°F Return gas, 
°F Condenser 
air entering 
dry-bulb, 
°F Condenser 
air entering 
wet-bulb, 
°F1 Compressor operating mode 
Off-Cycle, Condition C ...................... ........................ ........................ 35 34 Compressor Off. 
Notes: 
1Required only for evaporative condensing units (e.g., incorporates a slinger ring). 
TABLE 14—T ESTOPERATING CONDITIONS FOR VARIABLE - ORMULTIPLE -CAPACITY LOW-TEMPERATURE INDOOR  
DEDICATED CONDENSING UNITS 
Test title Suction 
dew point, 
°F Return gas, 
°F Condenser 
air entering 
dry-bulb, 
°F Condenser 
air entering 
wet-bulb, 
°F1 Compressor operating mode 
Capacity, Condition A, Minimum Ca-
pacity.¥22 5 90 75 Minimum Capacity, k=1. 
Capacity, Condition A, Intermediate 
Capacity.¥22 5 90 75 Intermediate Capacity, k=i. 
Capacity, Condition A, Maximum Ca-
pacity.¥22 5 90 75 Maximum Capacity, k=2. 
Off-Cycle, Condition A ...................... ........................ ........................ 90 75 Compressor Off. 
Notes: 
1Required only for evaporative condensing units (e.g., incorporates a slinger ring). 
* * * * * 
[FR Doc. 2023–18531 Filed 10–24–23; 8:45 am] 
BILLING CODE 6450–01–P 
DEPARTMENT OF TRANSPORTATION 
Federal Aviation Administration 
14 CFR Part 25 
[Docket No. FAA–2022–1740; Special 
Conditions No. 25–841–SC] 
Special Conditions: The Boeing 
Company Model 777 Series Airplanes; Passenger Seats With Pretensioner Restraint Systems 
AGENCY : Federal Aviation 
Administration (FAA), DOT. 
ACTION : Final special conditions. 
SUMMARY : These special conditions are 
issued for The Boeing Company (Boeing) Model 777 series airplanes. These airplanes have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. This design feature is pretensioner restraint systems installed on passenger seats. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards. 
DATES : Effective November 24, 2023. 
FOR FURTHER INFORMATION CONTACT : 
Shannon Lennon, Cabin Safety, AIR– 624, Technical Policy Branch, Policy and Standards Division, Aircraft Certification Service, Federal Aviation Administration, 2200 South 216th Street, Des Moines, Washington 98198; telephone and fax 206–231–3209; email shannon.lennon@faa.gov. 
SUPPLEMENTARY INFORMATION : 
Background 
On September 30, 2021, Boeing 
applied for an amendment to Type Certificate No. T00001SE for Boeing Model 777 series airplanes. These airplanes, currently approved under Type Certificate No. T00001SE, are twin-engine, transport-category airplanes with maximum seating for 495 passengers and a maximum takeoff weight of 775,000 pounds. 
Type Certification Basis 
Under the provisions of 14 CFR 
21.101, Boeing must show that Model 
777 series airplanes meet the applicable provisions of the regulations listed in Type Certificate No. T00001SE, or the applicable regulations in effect on the date of application for the change, except for earlier amendments as agreed upon by the FAA. 
If the Administrator finds that the 
applicable airworthiness regulations (e.g., 14 CFR part 25) do not contain adequate or appropriate safety standards for Boeing Model 777 series airplanes because of a novel or unusual design feature, special conditions are prescribed under the provisions of § 21.16. 
Special conditions are initially 
applicable to the model for which they are issued. Should the type certificate for that model be amended later to include any other model that incorporates the same novel or unusual design feature, or should any other model already included on the same type certificate be modified to incorporate the same novel or unusual design feature, these special conditions would also apply to the other model under § 21.101. 
In addition to the applicable 
airworthiness regulations and special conditions, Boeing Model 777 series airplanes must comply with the fuel- vent and exhaust-emission requirements of 14 CFR part 34, and the noise- certification requirements of 14 CFR part 36. 
The FAA issues special conditions, as 
defined in 14 CFR 11.19, in accordance with § 11.38, and they become part of the type certification basis under § 21.101. 
Novel or Unusual Design Features 
Boeing Model 777 series airplanes 
will incorporate the following novel or 
unusual design feature: 
Forward-facing seats incorporating a 
shoulder harness with pretensioner 
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