22116 Federal Register / Vol. 87, No. 72 / Thursday, April 14, 2022 / Rules and Regulations 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2022–0125; Special 

Conditions No. 25–808–SC] 

Special Conditions: Dassault Aviation 

Model Falcon 6X Airplane; Flight 

Envelope Protection: Pitch and Roll 

Limiting Functions 

AGENCY: Federal Aviation 

Administration (FAA), 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 an Electronic Flight Control 

System (EFCS) that limits pitch and roll 

functions to prevent the airplane from 

attaining certain pitch attitudes and roll 

angles. 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 April 14, 2022. Send 

comments on or before May 31, 2022. 

ADDRESSES: Send comments identified 

by Docket No. FAA–2022–0125 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) 

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 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. 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 

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 

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 Aviation 

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 14 CFR 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 noiseVerDate Sep<11>2014 16:17 Apr 13, 2022 Jkt 256001 PO 00000 Frm 00014 Fmt 4700 Sfmt 4700 E:\FR\FM\14APR1.SGM 14APR1

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Federal Register / Vol. 87, No. 72 / Thursday, April 14, 2022 / Rules and Regulations 22117 

certification requirements of 14 CFR 

part 36. 

The FAA issues special conditions, as 

defined in 14 CFR 11.19, in accordance 

with § 11.38, and they become part of 

the type certification basis under 

§ 21.17(a)(2). 

Novel or Unusual Design Features 

The Dassault Aviation Model Falcon 

6X airplane will incorporate the 

following novel or unusual design 

features: 

An Electronic Flight Control System 

(EFCS) that limits pitch and roll 

functions to prevent the airplane from 

attaining certain pitch attitudes and roll 

angles. 

Discussion 

Part 25 of 14 CFR does not 

specifically relate to flight 

characteristics associated with fixedattitude limits. The Dassault Aviation 

Model Falcon 6X airplane will 

incorporate pitch and roll attitudelimiting functions, via the Electronic 

Flight Control System (EFCS) normal 

modes, to prevent airplane pitch 

attitudes greater than +30 degrees and 

less than ¥15 degrees, and roll angles 

greater than plus or minus 67 degrees. 

In addition, positive spiral stability is 

introduced for roll angles greater than 

35 degrees at speeds below VMO/MMO. 

At speeds greater than VMO and up to 

VDF, maximum aileron control force is 

limited to only 45 degrees maximum 

bank angle. 

The installed attitude-limiting 

functions are designed such that, at VMO

+ 6 knots or MMO + 0.012, an automatic 

nose-up pitch is applied with phase 

advance in case of high acceleration. 

The speed stabilizes at VD/MD if the 

stick is full forward, or the speed will 

return to VMO/MMO if the stick is 

released. 

The basic envelope-protection 

requirement, historically applied, is to 

not unduly limit the maneuver 

capability of the airplane, nor interfere 

with its ability to perform maneuvers 

required for normal and emergency 

operations. The design details for the 

Dassault Model Falcon 6X support the 

objective of not unduly limiting the 

maneuver capability, while also 

protecting the airplane from adverse 

attitudes. 

These special conditions are in 

addition to the requirements of 14 CFR 

25.143. 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. 

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. 

In addition to § 25.143, the following 

requirements apply: 

1. The pitch-limiting function must 

not impede normal maneuvering for 

pitch angles up to the maximum 

required for normal maneuvering, 

including a normal all-enginesoperating takeoff, plus a suitable margin 

to allow for satisfactory speed control. 

2. The pitch- and roll-limiting 

functions must not restrict, or prevent 

attaining pitch attitudes necessary for, 

emergency maneuvering, or roll angles 

up to 66 degrees with flaps up, or 60 

degrees with flaps down. Spiral 

stability, which is introduced above 35 

degrees roll angle, must not require 

excessive pilot strength to achieve these 

roll angles. Other protections, which 

further limit the roll capability under 

certain extreme angle-of-attack, attitude, 

or high-speed conditions, are 

acceptable, if they allow at least 45 

degrees of roll capability. 

Issued in Kansas City, Missouri, on April 

8, 2022. 

Patrick R. Mullen, 

Manager, Technical Innovation Policy 

Branch, Policy and Innovation Division, 

Aircraft Certification Service. 

[FR Doc. 2022–07932 Filed 4–13–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0663; Project 

Identifier MCAI–2020–01618–T; Amendment 

39–21996; AD 2022–07–08] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2016–17– 

12, which applied to all Airbus SAS 

Model A318 series airplanes; Model 

A319–111, –112, –113, –114, –115, 

–131, –132, and –133 airplanes; Model 

A320–211, –212, –214, –231, –232, and 

–233 airplanes; and Model A321–111, 

–112, –131, –211, –212, –213, –231, and 

–232 airplanes. AD 2016–17–12 

required inspecting certain trimmable 

horizontal stabilizer actuators (THSAs) 

to determine the number of total flight 

cycles the THSA has accumulated, and 

replacing the THSA if necessary. Since 

the FAA issued AD 2016–17–12, the 

FAA has determined that a more 

restrictive airworthiness limitations is 

necessary for carbon friction disks on 

the no-back brake (NBB) of the THSA. 

This AD continues to require the 

inspections of the THSAs and 

replacement if necessary. This AD also 

requires revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations; as 

specified in a European Union Aviation 

Safety Agency (EASA) AD, which is 

incorporated by reference. This AD also 

limits the installation of affected parts 

under certain conditions. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

DATES: This AD is effective May 19, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of May 19, 2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publication listed in 

this AD as of September 30, 2016 (81 FR 

58823, August 26, 2016). 

ADDRESSES: For EASA material 

incorporated by reference (IBR) in this 

AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; 

telephone +49 221 8999 000; email 


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