Special Conditions: Gulfstream Aerospace Corporation Model GVIII-G700 and GVIII-G800 Series Airplanes; Side Stick Controllers-Controllability and Maneuverability, 4800-4802 [2024-01380]
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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.
khammond on DSKJM1Z7X2PROD with RULES
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–
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15:54 Jan 24, 2024
Jkt 262001
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.
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
Applicability
DEPARTMENT OF TRANSPORTATION
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.
Federal Aviation Administration
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.
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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
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions; request
for comments.
AGENCY:
These special conditions are
issued for the Gulfstream Aerospace
Corporation (Gulfstream) Model GVIII–
G700 and GVIII–G800 series airplanes.
SUMMARY:
E:\FR\FM\25JAR1.SGM
25JAR1
khammond on DSKJM1Z7X2PROD with RULES
Federal Register / Vol. 89, No. 17 / Thursday, January 25, 2024 / Rules and Regulations
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 side-stick controllers
for pitch and roll control. 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–2023–2444 using
any of the following methods:
• Federal eRegulations Portal: Go to
https://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
https://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: Troy
Brown, Performance and Environment
Unit, AIR–621A, Technical Policy
Branch, Policy and Standards Division,
Aircraft Certification Service, Federal
Aviation Administration, 1801 S Airport
Rd., Wichita, KS 67209–2190; telephone
and fax 405–666–1050; email
troy.a.brown@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
VerDate Sep<11>2014
15:54 Jan 24, 2024
Jkt 262001
4801
and comment prior to this publication
are unnecessary.
change these special conditions based
on the comments received.
Privacy
Background
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 https://
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.
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).
Confidential Business Information
Type Certification Basis
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 Troy Brown,
Performance and Environment Unit,
AIR–621A, Technical Policy Branch,
Policy and Standards Division, Aircraft
Certification Service, Federal Aviation
Administration, 1801 S Airport Rd.,
Wichita, KS 67209–2190; telephone and
fax 405–666–1050; email troy.a.brown@
faa.gov. Comments the FAA receives,
which are not specifically designated as
CBI, will be placed in the public docket
for these special conditions.
Under the provisions of 14 CFR
21.101, Gulfstream must show that the
Model GVIII–G700 and GVIII–G800
series airplanes meet the applicable
provisions 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.
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
PO 00000
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Fmt 4700
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Novel or Unusual Design Feature
The Gulfstream Model GVIII–G700
and GVIII–G800 series airplanes will
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25JAR1
4802
Federal Register / Vol. 89, No. 17 / Thursday, January 25, 2024 / Rules and Regulations
incorporate the following novel or
unusual design feature:
Side-stick controllers for pitch and
roll control.
khammond on DSKJM1Z7X2PROD with RULES
Discussion
These special conditions for the
Gulfstream Model GVIII–G700 and
GVIII–G800 series airplanes address the
unique features of the side-stick
controllers. The Model GVIII–G700 and
GVIII–G800 series airplanes will
incorporate side-stick controllers
controlling a fly-by-wire (FBW) flightcontrol system. The FBW control laws
are designed to provide conventional
flying qualities such as positive static
longitudinal and lateral stability as
prescribed in part 25, subpart B.
However, the pilot-control forces
prescribed in the referenced regulations
are not applicable for the side-stick
controller design.
Because current FAA regulations do
not specifically address the use of sidestick controllers for pitch and roll
control, the unique features of the side
stick therefore must be demonstrated,
through flight and simulator tests, to
have suitable handling and control
characteristics when considering the
following:
• The handling qualities tasks and
requirements of the Gulfstream Model
GVIII Special Conditions and other 14
CFR part 25 requirements for stability,
control, and maneuverability, including
the effects of turbulence.
• General ergonomics: Armrest
comfort and support, local freedom of
movement, displacement-angle
suitability, and axis harmony.
• Inadvertent pilot input in
turbulence.
• Inadvertent pitch and roll crosstalk
from pilot inputs on the side-stick
controller.
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 the other
model as well.
VerDate Sep<11>2014
15:54 Jan 24, 2024
Jkt 262001
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 the Gulfstream
Aerospace Corporation Model GVIII–
G700 and GVIII–G800 series airplanes:
(a) Pilot Strength
In lieu of the control-force limits
shown in § 25.143(d) for pitch and roll,
and in lieu of the specific pitch-force
requirements of §§ 25.143(i)(2),
25.145(b), 25.173(c), 25.175(b), and
25.175(d), the applicant must show that
the temporary and maximum prolongedforce levels for the side-stick controllers
are suitable for all expected operating
conditions and configurations, whether
normal or non-normal.
(b) Pilot-Control Authority
The electronic side-stick-controller
coupling design must provide for
corrective and/or overriding control
inputs by either pilot with no unsafe
characteristics. Annunciation of the
controller status must be provided and
must not be confusing to the flightcrew.
(c) Pilot Control
The applicant must show by flight
tests that the use of side-stick
controllers does not produce unsuitable
pilot-in-the-loop control characteristics
when considering precision path control
and tasks, and turbulence. In addition,
pitch and roll control force and
displacement sensitivity must be
compatible, so that normal pilot inputs
on one control axis will not cause
significant unintentional inputs
(crossover) on the other.
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. 2024–01380 Filed 1–24–24; 8:45 am]
BILLING CODE 4910–13–P
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 93
Construction Related Relief
Concerning Operations at Ronald
Reagan Washington National Airport,
John F. Kennedy International Airport,
and LaGuardia Airport, and Newark
Liberty International Airport, March 31,
2024, Through October 26, 2024
Federal Aviation
Administration (FAA), Department of
Transportation.
ACTION: Notification of limited waiver of
the slot usage requirement.
AGENCY:
This action grants a limited,
conditional waiver of the minimum slot
usage requirements at Ronald Reagan
Washington National Airport (DCA) due
to runway construction and closures at
the airport in 2024 and for impacted
flights between DCA and slot-controlled
airports John F. Kennedy International
Airport (JFK) and LaGuardia Airport
(LGA). In addition, the FAA will
provide similar limited, conditional
relief at Newark Liberty International
Airport (EWR) under the FAA’s Level 2
schedule facilitation process.
DATES: The usage waiver and policies in
this notification are effective on January
22, 2024, and apply from March 31,
2024, through October 26, 2024.
ADDRESSES: Requests may be submitted
by mail to the Slot Administration
Office, System Operations Services,
AJR–0, Room 300W, 800 Independence
Avenue SW, Washington, DC 20591, or
by email to: 7-awa-slotadmin@faa.gov.
FOR FURTHER INFORMATION CONTACT: For
questions concerning this notification
contact: Al Meilus, Slot Administration
and Capacity Analysis, FAA ATO
System Operations Services, AJR–G5,
Federal Aviation Administration, 800
Independence Avenue SW, Washington,
DC 20591; telephone 202–267–2822;
email al.meilus@faa.gov.
SUPPLEMENTARY INFORMATION:
SUMMARY:
Background
The Metropolitan Washington
Airports Authority (MWAA) plans
airfield and runway construction at
DCA beginning in April 2024 through
October 2024. The main Runway 1–19
will be closed nightly from
approximately April 15, 2024, through
August 5, 2024,1 from 11 p.m. to 5:59
a.m. Eastern Time on weekdays and
1 Phase 4: RWY 1/19 closure—April 15, thru May
14, 2024 (2300–0600L). Phase 5: RWY 1/19
closure—May 15 thru Aug 5, 2024 (2300–0600L).
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]]>Agencies
[Federal Register Volume 89, Number 17 (Thursday, January 25, 2024)]
[Rules and Regulations]
[Pages 4800-4802]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-01380]
-----------------------------------------------------------------------
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.
[[Page 4801]]
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
side-stick controllers for pitch and roll control. 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-2023-2444 using
any of the following methods:
Federal eRegulations Portal: Go to https://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 https://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: Troy Brown, Performance and
Environment Unit, AIR-621A, Technical Policy Branch, Policy and
Standards Division, Aircraft Certification Service, Federal Aviation
Administration, 1801 S Airport Rd., Wichita, KS 67209-2190; telephone
and fax 405-666-1050; email [email protected].
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 https://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 Troy Brown, Performance and Environment
Unit, AIR-621A, Technical Policy Branch, Policy and Standards Division,
Aircraft Certification Service, Federal Aviation Administration, 1801 S
Airport Rd., Wichita, KS 67209-2190; telephone and fax 405-666-1050;
email [email protected]. 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
twin-engine, 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 14 CFR 21.101, Gulfstream must show that
the Model GVIII-G700 and GVIII-G800 series airplanes meet the
applicable provisions 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
Sec. 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 Sec. 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 Sec. 21.101.
Novel or Unusual Design Feature
The Gulfstream Model GVIII-G700 and GVIII-G800 series airplanes
will
[[Page 4802]]
incorporate the following novel or unusual design feature:
Side-stick controllers for pitch and roll control.
Discussion
These special conditions for the Gulfstream Model GVIII-G700 and
GVIII-G800 series airplanes address the unique features of the side-
stick controllers. The Model GVIII-G700 and GVIII-G800 series airplanes
will incorporate side-stick controllers controlling a fly-by-wire (FBW)
flight-control system. The FBW control laws are designed to provide
conventional flying qualities such as positive static longitudinal and
lateral stability as prescribed in part 25, subpart B. However, the
pilot-control forces prescribed in the referenced regulations are not
applicable for the side-stick controller design.
Because current FAA regulations do not specifically address the use
of side-stick controllers for pitch and roll control, the unique
features of the side stick therefore must be demonstrated, through
flight and simulator tests, to have suitable handling and control
characteristics when considering the following:
The handling qualities tasks and requirements of the
Gulfstream Model GVIII Special Conditions and other 14 CFR part 25
requirements for stability, control, and maneuverability, including the
effects of turbulence.
General ergonomics: Armrest comfort and support, local
freedom of movement, displacement-angle suitability, and axis harmony.
Inadvertent pilot input in turbulence.
Inadvertent pitch and roll crosstalk from pilot inputs on
the side-stick controller.
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 the other 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 the Gulfstream Aerospace Corporation
Model GVIII-G700 and GVIII-G800 series airplanes:
(a) Pilot Strength
In lieu of the control-force limits shown in Sec. 25.143(d) for
pitch and roll, and in lieu of the specific pitch-force requirements of
Sec. Sec. 25.143(i)(2), 25.145(b), 25.173(c), 25.175(b), and
25.175(d), the applicant must show that the temporary and maximum
prolonged-force levels for the side-stick controllers are suitable for
all expected operating conditions and configurations, whether normal or
non-normal.
(b) Pilot-Control Authority
The electronic side-stick-controller coupling design must provide
for corrective and/or overriding control inputs by either pilot with no
unsafe characteristics. Annunciation of the controller status must be
provided and must not be confusing to the flightcrew.
(c) Pilot Control
The applicant must show by flight tests that the use of side-stick
controllers does not produce unsuitable pilot-in-the-loop control
characteristics when considering precision path control and tasks, and
turbulence. In addition, pitch and roll control force and displacement
sensitivity must be compatible, so that normal pilot inputs on one
control axis will not cause significant unintentional inputs
(crossover) on the other.
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. 2024-01380 Filed 1-24-24; 8:45 am]
BILLING CODE 4910-13-P
