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

4799 

Vol. 89, No. 17 

Thursday, January 25, 2024 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2023–2436; Special 

Conditions No. 25–851–SC] 

Special Conditions: Gulfstream 

Aerospace Corporation Model GVIII– 

G700 and GVIII–G800 Series Airplanes; 

Installation of Therapeutic Oxygen 

System 

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 GVIII– 

G700 and GVIII–G800 series airplanes. 

These airplanes 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 system for medical 

use. 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 January 25, 2024. Send 

comments on or before March 11, 2024. 

ADDRESSES: Send comments identified 

by Docket No. FAA–2023–2436 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, Washington 98198; 

telephone and fax 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 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 above. 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 December 31, 2019, Gulfstream 

applied for an amendment to Type 

Certificate No. T00015AT to include the 

new Model GVIII–G700 and GVIII–G800 

series airplanes. These airplanes, which 

are derivatives of the Model GVI 

currently approved under Type 

Certificate No. T00015AT, are twinengine, transport-category airplanes, 

with a maximum seating for 19 

passengers, and a maximum take-off 

weight of 107,600 pounds (GVIII–G700) 

and 105,600 pounds (GVIII–G800). 

Type Certification Basis 

Under the provisions of title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

Gulfstream must show that the Model 

GVIII–G700 and GVIII–G800 series 

airplanes meet the applicable provisions 


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4800 Federal Register / Vol. 89, No. 17 / Thursday, January 25, 2024 / Rules and Regulations 

of the regulations listed in Type 

Certificate No. T00015AT, 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 GVIII–G700 

and GVIII–G800 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, the Gulfstream Model 

GVIII–G700 and GVIII–G800 series 

airplanes 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 GVIII–G700 

and GVIII–G800 series airplanes 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 

No specific regulations 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 

Aerospace Corporation Model GVIII– 

G700 and GVIII–G800 airplanes’ 

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 the 

Gulfstream Model GVIII–G700 and 

GVIII–G800 series airplanes. Should 

Gulfstream apply at a later date for a 

change to the type certificate to include 

another 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 apply to that model as 

well. 

Conclusion 

This action affects only a certain 

novel or unusual design feature on 

Gulfstream model GVIII–G700 and 

GVIII–G800 series airplanes. 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 Model 

GVIII–G700 and GVIII–G800 series 

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 Kansas City, Missouri, on January 

19, 2024. 

Patrick R. Mullen, 

Manager, Technical Innovation Policy 

Branch, Policy and Innovation Division, 

Aircraft Certification Service. 

[FR Doc. 2024–01379 Filed 1–24–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2023–2444; Special 

Conditions No. 25–849–SC] 

Special Conditions: Gulfstream 

Aerospace Corporation Model GVIII– 

G700 and GVIII–G800 Series Airplanes; 

Side Stick Controllers—Controllability 

and Maneuverability 

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 GVIII– 

G700 and GVIII–G800 series airplanes. 


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