This section of the FEDERAL REGISTER

contains regulatory documents having general

applicability and legal effect, most of which

are keyed to and codified in the Code of

Federal Regulations, which is published under

50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by

the Superintendent of Documents.

Rules and Regulations Federal Register

92027 

Vol. 89, No. 225 

Thursday, November 21, 2024 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2024–2388; Special 

Conditions No. 25–871–SC] 

Special Conditions: Gulfstream 

Aerospace Corporation, Model GVII– 

G400 Airplane; Installation of a 

Therapeutic Oxygen System for 

Medical Use 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for the Gulfstream Aerospace 

Corporation (Gulfstream) Model GVII– 

G400 airplane. This airplane will 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 the 

installation of a therapeutic oxygen 

distribution system that provides a 

shared source of oxygen between the 

flightcrew and passengers. 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: This action is effective on 

Gulfstream on November 21, 2024. Send 

comments on or before January 6, 2025. 

ADDRESSES: Send comments identified 

by Docket No. FAA–2024–2388 using 

any of the following methods: 

• Federal eRegulations Portal: Go to 

www.regulations.gov and follow the 

online instructions for sending your 

comments electronically. 

• Mail: Send comments to Docket 

Operations, M–30, U.S. Department of 

Transportation (DOT), 1200 New Jersey 

Avenue SE, Room W12–140, West 

Building Ground Floor, Washington, DC 

20590–0001. 

• Hand Delivery or Courier: Take 

comments to Docket Operations in 

Room W12–140 of the West Building 

Ground Floor at 1200 New Jersey 

Avenue SE, Washington, DC, between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. 

• Fax: Fax comments to Docket 

Operations at 202–493–2251. 

• Docket: Background documents or 

comments received may be read at 

www.regulations.gov at any time. 

Follow the online instructions for 

accessing the docket or go to Docket 

Operations in Room W12–140 of the 

West Building Ground Floor at 1200 

New Jersey Avenue SE, Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

FOR FURTHER INFORMATION CONTACT: 

Robert Hettman, Mechanical Systems, 

AIR–623, Technical Policy Branch, 

Policy and Standards Division, Aircraft 

Certification Service, Federal Aviation 

Administration, 2200 South 216th 

Street, Des Moines, WA 98198; 

telephone 206–231–3171; email 

robert.hettman@faa.gov. 

SUPPLEMENTARY INFORMATION: The 

substance of these special conditions 

has been published in the Federal 

Register for public comment in several 

prior instances with no substantive 

comments received. Therefore, the FAA 

finds, pursuant to title 14, Code of 

Federal Regulations (14 CFR) 11.38(b), 

that new comments are unlikely, and 

notice and comment prior to this 

publication are unnecessary. 

Privacy 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in title 14, 

Code of Federal Regulations (14 CFR) 

11.35, the FAA will post all comments 

received without change to 

www.regulations.gov, including any 

personal information you provide. The 

FAA will also post a report 

summarizing each substantive verbal 

contact received about these special 

conditions. 

Confidential Business Information 

Confidential Business Information 

(CBI) is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to these special 

conditions contain commercial or 

financial information that is customarily 

treated as private, that you actually treat 

as private, and that is relevant or 

responsive to these special conditions, it 

is important that you clearly designate 

the submitted comments as CBI. Please 

mark each page of your submission 

containing CBI as ‘‘PROPIN.’’ The FAA 

will treat such marked submissions as 

confidential under the FOIA, and the 

indicated comments will not be placed 

in the public docket of these special 

conditions. Send submissions 

containing CBI to the individual listed 

in the FOR FURTHER INFORMATION

CONTACT section below. Comments the 

FAA receives, which are not specifically 

designated as CBI, will be placed in the 

public docket for these special 

conditions. 

Comments Invited 

The FAA invites interested people to 

take part in this rulemaking by sending 

written comments, data, or views. The 

most helpful comments reference a 

specific portion of the special 

conditions, explain the reason for any 

recommended change, and include 

supporting data. 

The FAA will consider all comments 

received by the closing date for 

comments, and will consider comments 

filed late if it is possible to do so 

without incurring delay. The FAA may 

change these special conditions based 

on the comments received. 

Background 

On June 30, 2020, Gulfstream applied 

for an amendment to Type Certificate 

No. T00021AT to include the new 

Model GVII–G400 airplane. The 

Gulfstream Model GVII–G400 airplane, 

which is a derivative of the Model GVII– 

G500 airplane currently approved under 

Type Certificate No. T00021AT, is a 

twin-engine, transport-category, 

business jet, with a maximum seating 

for 19 passengers, and a maximum takeoff weight of 73,500 pounds. 

Type Certification Basis 

Under the provisions of title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

Gulfstream must show that the Model 


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92028 Federal Register / Vol. 89, No. 225 / Thursday, November 21, 2024 / Rules and Regulations 

GVII–G400 airplane meets the 

applicable provisions of the regulations 

listed in Type Certificate No. 

T00021AT, 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 the Gulfstream Model GVII–G400 

airplane 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, the Gulfstream Model GVII– 

G400 airplane must comply with the 

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 14 CFR 11.38, and they become 

part of the type certification basis under 

§ 21.101. 

Novel or Unusual Design Features 

The Gulfstream Model GVII–G400 

airplane will incorporate the following 

novel or unusual design feature: 

An oxygen distribution system that 

provides a shared source of oxygen 

between the flightcrew and passengers 

to provide supplemental and 

therapeutic oxygen. 

Discussion 

There are no specific regulations that 

address the design and installation of 

required passenger or crew oxygen 

systems that share a supply source with 

an optional oxygen system used 

specifically for therapeutic applications. 

Therapeutic oxygen systems have been 

previously certified and were generally 

considered an extension of the 

passenger oxygen system for the 

purpose of defining the applicable 

regulations. As a result, existing 

requirements, such as 14 CFR 25.1309, 

25.1441(b) and (c), 25.1451, and 

25.1453, in the Gulfstream GVII–G400 

airplane’s certification basis applicable 

to this project, provide some design 

standards appropriate for oxygen system 

installations. In addition, § 25.1445 

includes standards for oxygen 

distribution systems when oxygen is 

supplied to crew and passengers. If a 

common source of supply is used, 

§ 25.1445(a)(2) requires a means to 

separately reserve the minimum supply 

required by the flight crew. 

Section 25.1445 is intended to protect 

the flightcrew by ensuring that an 

adequate supply of oxygen is available 

to complete a descent and landing 

following a loss of cabin pressure. When 

the regulation was written, the only 

passenger oxygen system designs were 

supplemental oxygen systems intended 

to protect passengers from hypoxia in 

the event of a decompression. Existing 

passenger oxygen systems did not 

include design features that would 

allow the flightcrew to control oxygen to 

passengers during flight. There are no 

similar requirements in § 25.1445 when 

oxygen is supplied from the same 

source to passengers for use during a 

decompression, and for discretionary or 

first-aid use any time during the flight. 

In the design, the crew, passenger, and 

therapeutic oxygen systems use the 

same source of oxygen. These special 

conditions contain additional design 

requirements for the equipment 

involved in this dual therapeutic oxygen 

plus supplemental gaseous oxygen 

installation. 

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. 

Applicability 

As discussed above, these special 

conditions are applicable to Gulfstream 

Model GVII–G400 airplane. Should 

Gulfstream apply at a later date for a 

change to the type certificate to include 

another model incorporating 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 apply to that model as 

well. 

Conclusion 

This action affects only the certain 

novel or unusual design feature on the 

Gulfstream Model GVII–400 airplane. It 

is not a rule of general applicability. 

List of Subjects in 14 CFR Part 25 

Aircraft, Aviation safety, Reporting 

and recordkeeping requirements. 

Authority Citation 

The authority citation for these 

special conditions is as follows: 

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

44701, 44702, and 44704. 

The Special Conditions 

Accordingly, pursuant to the 

authority delegated to me by the 

Administrator, the following special 

conditions are issued as part of the type 

certification basis for Gulfstream 

Aerospace Corporation Model GVII– 

G400 airplanes. 

The distribution system for the 

passenger therapeutic oxygen system 

must be designed and installed to meet 

requirements as follows: 

(1) When oxygen is supplied to 

passengers for both supplemental and 

therapeutic purposes, the distribution 

system must be designed for either— 

(a) A source of supplemental oxygen 

for protection following a loss of cabin 

pressure, and a separate source for 

therapeutic purposes; or 

(b) A common source of supply with 

means to separately reserve the 

minimum supply required by the 

passengers for supplemental use 

following a loss of cabin pressure. 

Issued in Des Moines, Washington, on 

November 15, 2024. 

Paul R. Siegmund, 

Acting Manager, Technical Policy Branch, 

Policy and Standards Division, Aircraft 

Certification Service. 

[FR Doc. 2024–27131 Filed 11–20–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2023–2166; Airspace 

Docket No. 23–ASO–45] 

RIN 2120–AA66 

Amendment of Class E Airspace; Lady 

Lake, FL 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action amends Class E 

airspace extending upward from 700 

feet above the surface for Lady Lake 

Hospital, Lady Lake, FL. This action 

increases the existing radius to 

accommodate a new instrument 

approach procedure for UF Health The 

Villages Hospital Heliport, The Villages, 

FL. Controlled airspace is necessary for 

the safety and management of 


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