Special Conditions: Dassault Aviation Model Falcon 6X Airplane; Flight-Envelope Protection: General Limiting Requirements, 8143-8145 [2022-03025]
Download as PDF
jspears on DSK121TN23PROD with RULES1
Federal Register / Vol. 87, No. 30 / Monday, February 14, 2022 / Rules and Regulations
The commentor is concerned the
change to the maturity schedule would
directly affect the imports of this variety
as many importers have been declaring
the Beneke as Guatemalan seedling at
the time of inspection. The commentor
believes this change would negatively
impact the importation of this variety by
reducing its shipment timeframe to that
specified for the Guatemalan seedling.
However, in the comment, the Beneke
is described as a variety which changes
color from green to dark purple.
Sections 915.332 of the Order and
944.31 of the Avocado import maturity
regulation, provide an exemption from
the maturity regulation for varieties
which normally change color to any
shade of red or purple when mature,
except for the Linda variety.
Consequently, varieties that break in
color, such as Beneke, are exempt from
the maturity schedule. As such, this
change will not impact the Beneke
variety.
The commentor also suggests that
Beneke be adopted as the official name
for this variety and asked that
procedures be updated to assist with the
importation of this variety. USDA is
familiar with the Beneke variety and has
been working on ways to facilitate its
entry into the United States. USDA has
requested a United Nations Standard
Products and Services Code for the
Beneke variety. Once obtained, the
codes can be used when presenting this
variety for entry into the United States.
The importer should also identify the
variety as Beneke when submitting the
request for inspection. These steps
should facilitate the importation of this
variety and prevent unnecessary issues
and delays during the inspection
process.
Accordingly, for the reasons
discussed above, no changes will be
made to the rule as proposed based on
the comments received.
A small business guide on complying
with fruit, vegetable, and specialty crop
marketing agreements and orders may
be viewed at: https://
www.ams.usda.gov/rules-regulations/
moa/small-businesses. Any questions
about the compliance guide should be
sent to Richard Lower at the previously
mentioned address in the FOR FURTHER
INFORMATION CONTACT section.
In accordance with section 8e of the
Act, the United States Trade
Representative has concurred with the
issuance of this rule.
After consideration of all relevant
material presented, including the
information and recommendation
submitted by the Committee and other
available information, it is hereby found
VerDate Sep<11>2014
16:05 Feb 11, 2022
Jkt 256001
that this rule will tend to effectuate the
declared policy of the Act.
7 CFR Part 915
Avocados, Marketing agreements,
Reporting and recordkeeping
requirements.
7 CFR Part 944
Avocados, Food grades and standards,
Grapefruit, Grapes, Imports, Kiwifruit,
Limes, Olives, Oranges, Plums, Prunes.
For the reasons set forth in the
preamble, the Agricultural Marketing
Service amends 7 CFR parts 915 and
944 as follows:
PART 915—AVOCADOS GROWN IN
SOUTH FLORIDA
1. The authority citation for part 915
continues to read as follows:
■
Authority: 7 U.S.C. 601–674.
2. Section 915.332 is amended by
adding paragraph (a)(4) to read as
follows:
■
§ 915.332 Florida avocado maturity
regulation.
(a) * * *
(4) The requirements listed in table I
of this section are in effect annually
from April 16 through April 15 of the
following year, with an exception for
the requirements for Guatemalan
seedling which are in effect annually
from June 9 to June 8 of the following
year.
*
*
*
*
*
PART 944—FRUITS; IMPORT
REGULATIONS
3. The authority citation for part 944
continues to read as follows:
■
Authority: 7 U.S.C. 601–674.
4. Section 944.31 is amended by
adding paragraph (a)(4) to read as
follows:
■
§ 944.31 Avocado import maturity
regulation.
(a) * * *
(4) The requirements listed in table I
of this section are in effect annually
from April 16 through April 15 of the
following year, with an exception for
the requirements for Guatemalan
seedling which are in effect annually
from June 9 to June 8 of the following
year.
*
*
*
*
*
Erin Morris,
Associate Administrator, Agricultural
Marketing Service.
[FR Doc. 2022–03110 Filed 2–11–22; 8:45 am]
BILLING CODE P
Frm 00005
Fmt 4700
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
List of Subjects
PO 00000
8143
Sfmt 4700
14 CFR Part 25
[Docket No. FAA–2021–0628; Special
Conditions No. 25–802–SC]
Special Conditions: Dassault Aviation
Model Falcon 6X Airplane; FlightEnvelope Protection: General Limiting
Requirements
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final special conditions; request
for comments.
AGENCY:
These special conditions are
issued for the Dassault Aviation
(Dassault) Model Falcon 6X 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 a new control architecture and
a full digital flight control system that
provides comprehensive flight-envelope
protections. 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
Dassault on February 14, 2022. Send
comments on or before March 31, 2022.
ADDRESSES: Send comments identified
by Docket No. FAA–2021–0628 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.
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)
SUMMARY:
E:\FR\FM\14FER1.SGM
14FER1
8144
Federal Register / Vol. 87, No. 30 / Monday, February 14, 2022 / Rules and Regulations
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 the Information
Contact below. Comments the FAA
receives, which are not specifically
designated as CBI, will be placed in the
public docket for these special
conditions.
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.
Troy
Brown, Performance and Environment
Section, AIR–625, Technical Innovation
Policy Branch, Policy and Innovation
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.
FOR FURTHER INFORMATION CONTACT:
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 § 11.38(b), that new
comments are unlikely, and notice and
comment prior to this publication are
unnecessary.
jspears on DSK121TN23PROD with RULES1
SUPPLEMENTARY INFORMATION:
VerDate Sep<11>2014
16:05 Feb 11, 2022
Jkt 256001
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. The FAA may change these
special conditions based on the
comments received.
Background
On July 1, 2012, Dassault applied for
a type certificate for its new Model
Falcon 5X airplane. However, Dassault
has decided not to release an airplane
under the model designation Falcon 5X,
instead choosing to change that model
designation to Falcon 6X.
In February of 2018, due to engine
supplier issues, Dassault extended the
type certificate application date for its
Model Falcon 5X airplane under new
Model Falcon 6X. This airplane is a
twin-engine business jet with seating for
19 passengers, and has a maximum
takeoff weight of 77,460 pounds.
Type Certification Basis
Under the provisions of 14 CFR 21.17,
Dassault must show that the Model
Falcon 6X airplane meets the applicable
provisions of part 25, as amended by
amendments 25–1 through 25–146.
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 Dassault Model Falcon 6X
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, these special conditions
would also apply to the other model
under § 21.101.
In addition to the applicable
airworthiness regulations and special
conditions, the Dassault Model Falcon
6X airplane must comply with the fuelvent and exhaust-emission requirements
of 14 CFR part 34, and the noisecertification 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
§ 21.17(a)(2).
PO 00000
Frm 00006
Fmt 4700
Sfmt 4700
Novel or Unusual Design Features
The Dassault Model Falcon 6X
airplane will incorporate the following
novel or unusual design features:
New control architecture and a full
digital flight control system that
provides comprehensive flight-envelope
protections.
Discussion
The applicable airworthiness
regulation is § 25.143. The purpose of
§ 25.143 is to verify that operational
maneuvers conducted within the
operational envelope can be
accomplished smoothly with average
piloting skill and without exceeding
structural limits. The pilot should be
able to predict the airplane response to
any control input. During the course of
the flight-test program, the pilot
determines compliance with § 25.143
primarily through qualitative methods.
During flight test, the pilot should
evaluate all of the following:
• The interface between each
protection function;
• Transitions from one mode to
another;
• Airplane response to intentional
dynamic maneuvering, whenever
applicable, through dedicated
maneuvers;
• General controllability assessment;
• High-speed characteristics; and
• High angle-of-attack.
However, the regulations do not
adequately ensure that the novel or
unusual features of the electronic flight
control system will have a level of safety
equivalent to that of existing standards.
The general limiting requirements are
necessary to ensure a smooth transition
from normal flight to the protection
mode and adequate maneuver
capability. The general limiting
requirements also ensure that the
structural limits of the airplane are not
exceeded. Furthermore, failure of the
flight-envelope protection feature must
not create hazardous flight conditions.
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 Dassault
Model Falcon 6X airplane. Should
Dassault apply at a later date for a
change to the type certificate to include
another model incorporating the same
novel or unusual design feature, these
special conditions would apply to that
model as well.
E:\FR\FM\14FER1.SGM
14FER1
Federal Register / Vol. 87, No. 30 / Monday, February 14, 2022 / Rules and Regulations
Conclusion
This action affects only a certain
novel or unusual design feature on one
model of 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:
BILLING CODE 4910–13–P
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 Dassault Aviation
Model Falcon 6X airplanes.
jspears on DSK121TN23PROD with RULES1
General Limiting Requirements
a. Onset characteristics of each flightenvelope protection feature must be
smooth, appropriate to the phase of
flight and type of maneuver, and not in
conflict with the ability of the pilot to
satisfactorily change airplane flight
path, speed, or attitude as needed.
b. Limit values of protected flight
parameters (and, if applicable,
associated warning thresholds) must be
compatible with the following:
1. Airplane structural limits,
2. Required safe and controllable
maneuvering of the airplane, and
3. Margins to critical conditions.
Unsafe flight characteristics/conditions
must not result if dynamic
maneuvering, airframe, and system
tolerances (both manufacturing and
inservice), and non-steady atmospheric
conditions, in any appropriate
combination and phase of flight, can
produce a limited flight parameter
beyond the nominal design limit value.
c. The airplane must be responsive to
intentional dynamic maneuvering to
within a suitable range of the parameter
limit. Dynamic characteristics such as
damping and overshoot must also be
appropriate for the flight-maneuver and
limit parameter in question.
d. When simultaneous envelope
limiting is engaged, adverse coupling or
adverse priority must not result.
Failure States
a. Electronic flight-control system
(EFCS) failures, including sensors, must
not result in a condition where a
parameter is limited to such a reduced
value that safe and controllable
maneuvering is no longer available.
b. The crew must be alerted by
suitable means if any change in
16:05 Feb 11, 2022
Jkt 256001
Issued in Kansas City, Missouri, on
February 8, 2022.
Patrick R. Mullen,
Manager, Technical Innovation Policy
Branch, Policy and Innovation Division,
Aircraft Certification Service.
[FR Doc. 2022–03025 Filed 2–11–22; 8:45 am]
Authority: 49 U.S.C. 106(f), 106(g), 40113,
44701, 44702, 44704.
VerDate Sep<11>2014
envelope limiting or maneuverability is
produced by single or multiple failures
of the EFCS not shown to be extremely
improbable.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA–2020–1039; Special
Conditions No. 25–807–SC]
Special Conditions: Dassault Aviation
Model Falcon 6X Airplane; Electronic
Flight-Control System: LateralDirectional and Longitudinal Stability
and Low-Energy Awareness
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final special conditions; request
for comments.
AGENCY:
These special conditions are
issued for the Dassault Aviation
(Dassault) Model Falcon 6X 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 an electronic flight-control
system (EFCS) associated with lateraldirectional and longitudinal stability,
and low-energy awareness. 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
Dassault on February 14, 2022. Send
comments on or before March 31, 2022.
ADDRESSES: Send comments identified
by Docket No. FAA–2020–1039 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
SUMMARY:
PO 00000
Frm 00007
Fmt 4700
Sfmt 4700
8145
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.
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 the Information
Contact below. Comments the FAA
receives, which are not specifically
designated as CBI, will be placed in the
public docket for this rulemaking.
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
Section, AIR–625, Technical Innovation
Policy Branch, Policy and Innovation
Division, Aircraft Certification Service,
E:\FR\FM\14FER1.SGM
14FER1
Agencies
[Federal Register Volume 87, Number 30 (Monday, February 14, 2022)]
[Rules and Regulations]
[Pages 8143-8145]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-03025]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 25
[Docket No. FAA-2021-0628; Special Conditions No. 25-802-SC]
Special Conditions: Dassault Aviation Model Falcon 6X Airplane;
Flight-Envelope Protection: General Limiting Requirements
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final special conditions; request for comments.
-----------------------------------------------------------------------
SUMMARY: These special conditions are issued for the Dassault Aviation
(Dassault) Model Falcon 6X 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 a new control architecture and a full
digital flight control system that provides comprehensive flight-
envelope protections. 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 Dassault on February 14, 2022. Send
comments on or before March 31, 2022.
ADDRESSES: Send comments identified by Docket No. FAA-2021-0628 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.
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)
[[Page 8144]]
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
the Information Contact below. Comments the FAA receives, which are not
specifically designated as CBI, will be placed in the public docket for
these special conditions.
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 Section, AIR-625, Technical Innovation Policy Branch,
Policy and Innovation 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 Sec. 11.38(b), that new comments
are unlikely, and notice and comment prior to this publication are
unnecessary.
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. The FAA may change these special conditions based on the
comments received.
Background
On July 1, 2012, Dassault applied for a type certificate for its
new Model Falcon 5X airplane. However, Dassault has decided not to
release an airplane under the model designation Falcon 5X, instead
choosing to change that model designation to Falcon 6X.
In February of 2018, due to engine supplier issues, Dassault
extended the type certificate application date for its Model Falcon 5X
airplane under new Model Falcon 6X. This airplane is a twin-engine
business jet with seating for 19 passengers, and has a maximum takeoff
weight of 77,460 pounds.
Type Certification Basis
Under the provisions of 14 CFR 21.17, Dassault must show that the
Model Falcon 6X airplane meets the applicable provisions of part 25, as
amended by amendments 25-1 through 25-146.
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 Dassault Model Falcon 6X airplane
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, 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 Dassault Model Falcon 6X airplane 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 Sec. 11.38, and they become part of the type
certification basis under Sec. 21.17(a)(2).
Novel or Unusual Design Features
The Dassault Model Falcon 6X airplane will incorporate the
following novel or unusual design features:
New control architecture and a full digital flight control system
that provides comprehensive flight-envelope protections.
Discussion
The applicable airworthiness regulation is Sec. 25.143. The
purpose of Sec. 25.143 is to verify that operational maneuvers
conducted within the operational envelope can be accomplished smoothly
with average piloting skill and without exceeding structural limits.
The pilot should be able to predict the airplane response to any
control input. During the course of the flight-test program, the pilot
determines compliance with Sec. 25.143 primarily through qualitative
methods. During flight test, the pilot should evaluate all of the
following:
The interface between each protection function;
Transitions from one mode to another;
Airplane response to intentional dynamic maneuvering,
whenever applicable, through dedicated maneuvers;
General controllability assessment;
High-speed characteristics; and
High angle-of-attack.
However, the regulations do not adequately ensure that the novel or
unusual features of the electronic flight control system will have a
level of safety equivalent to that of existing standards. The general
limiting requirements are necessary to ensure a smooth transition from
normal flight to the protection mode and adequate maneuver capability.
The general limiting requirements also ensure that the structural
limits of the airplane are not exceeded. Furthermore, failure of the
flight-envelope protection feature must not create hazardous flight
conditions.
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
Dassault Model Falcon 6X airplane. Should Dassault apply at a later
date for a change to the type certificate to include another model
incorporating the same novel or unusual design feature, these special
conditions would apply to that model as well.
[[Page 8145]]
Conclusion
This action affects only a certain novel or unusual design feature
on one model of 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, 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 Dassault Aviation Model Falcon 6X
airplanes.
General Limiting Requirements
a. Onset characteristics of each flight-envelope protection feature
must be smooth, appropriate to the phase of flight and type of
maneuver, and not in conflict with the ability of the pilot to
satisfactorily change airplane flight path, speed, or attitude as
needed.
b. Limit values of protected flight parameters (and, if applicable,
associated warning thresholds) must be compatible with the following:
1. Airplane structural limits,
2. Required safe and controllable maneuvering of the airplane, and
3. Margins to critical conditions. Unsafe flight characteristics/
conditions must not result if dynamic maneuvering, airframe, and system
tolerances (both manufacturing and inservice), and non-steady
atmospheric conditions, in any appropriate combination and phase of
flight, can produce a limited flight parameter beyond the nominal
design limit value.
c. The airplane must be responsive to intentional dynamic
maneuvering to within a suitable range of the parameter limit. Dynamic
characteristics such as damping and overshoot must also be appropriate
for the flight-maneuver and limit parameter in question.
d. When simultaneous envelope limiting is engaged, adverse coupling
or adverse priority must not result.
Failure States
a. Electronic flight-control system (EFCS) failures, including
sensors, must not result in a condition where a parameter is limited to
such a reduced value that safe and controllable maneuvering is no
longer available.
b. The crew must be alerted by suitable means if any change in
envelope limiting or maneuverability is produced by single or multiple
failures of the EFCS not shown to be extremely improbable.
Issued in Kansas City, Missouri, on February 8, 2022.
Patrick R. Mullen,
Manager, Technical Innovation Policy Branch, Policy and Innovation
Division, Aircraft Certification Service.
[FR Doc. 2022-03025 Filed 2-11-22; 8:45 am]
BILLING CODE 4910-13-P