Federal Register / Vol. 86, No. 132 / Wednesday, July 14, 2021 / Rules and Regulations 37015 

conditions are issued as part of the type 

certification basis for Boeing Model 

777–200/–200LR/–300/–300ER series 

airplanes, as modified by Archeion 

Holdings, LLC, for airplane electronicsystem security protection from 

unauthorized external access. 

(a) The applicant must ensure 

airplane electronic-system security 

protection from access by unauthorized 

sources external to the airplane, 

including those possibly caused by 

maintenance activity. 

(b) The applicant must ensure that 

electronic-system security threats are 

identified and assessed, and that 

effective electronic-system security 

protection strategies are implemented to 

protect the airplane from all adverse 

impacts on safety, functionality, and 

continued airworthiness. 

(c) The applicant must establish 

appropriate procedures to allow the 

operator to ensure that continued 

airworthiness of the airplane is 

maintained, including all post-typecertification modifications that may 

have an impact on the approved 

electronic-system security safeguards. 

Issued in Des Moines, Washington, on July 

7, 2021. 

Mary A. Schooley, 

Acting Manager, Technical Innovation Policy 

Branch, Policy and Innovation Division, 

Aircraft Certification Service. 

[FR Doc. 2021–14974 Filed 7–13–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–FAA–2021–0583; Special 

Conditions No. FAA–2021–0583–F] 

Special Conditions: Archeion 

Holdings, LLC, Boeing Model No. 777– 

200/–200LR/–300/–300ER Series 

Airplanes; Electronic-System Security 

Protection From Unauthorized Internal 

Access 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final special conditions; request 

for comments. 

SUMMARY: These special conditions are 

issued for the Boeing Model No. 777– 

200/–200LR/–300/–300ER series 

airplanes. These airplanes, as modified 

by Archeion Holdings, LLC (Archeion), 

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 digital systems architecture for the 

installation of a system with wireless 

network and hosted application 

functionality that allows access, from 

sources internal to the airplane, to the 

airplane’s internal electronic 

components. 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 

Archeion on July 14, 2021. Send 

comments on or before August 30, 2021. 

ADDRESSES: Send comments identified 

by Docket No. FAA–2021–0583 using 

any of the following methods: 

• Federal eRegulations Portal: Go to 

http://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 14 CFR 

11.35, the FAA will post all comments 

received without change to http://

www.regulations.gov/, including any 

personal information you provide. The 

FAA will also post a report 

summarizing each substantive verbal 

contact received about this proposal. 

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 this Notice contain 

commercial or financial information 

that is customarily treated as private, 

that you actually treat as private, and 

that is relevant or responsive to this 

Notice, 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 this Notice. 

Submissions containing CBI should be 

sent to Varun Khanna, Airplane and 

Flight Crew Interface Section, AIR–622, 

Aircraft Information Systems, Technical 

Innovation Policy Branch, Policy and 

Innovation Division, Aircraft 

Certification Service, Federal Aviation 

Administration, 2200 South 216th 

Street, Des Moines, Washington 98198; 

telephone and fax 206–231–3159; email 

Varun.Khanna@faa.gov. 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 

http://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: 

Varun Khanna, Airplane and Flight 

Crew Interface Section, AIR–622, 

Aircraft Information Systems, Technical 

Innovation Policy Branch, Policy and 

Innovation Division, Aircraft 

Certification Service, Federal Aviation 

Administration, 2200 South 216th 

Street, Des Moines, Washington 98198; 

telephone and fax 206–231–3159; email 

Varun.Khanna@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 prior 

public notice and comment 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 14, 2020, Archeion applied 

for a change to Type Certificate No. 


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37016 Federal Register / Vol. 86, No. 132 / Wednesday, July 14, 2021 / Rules and Regulations 

T00001SE for the installation of an 

Avionica avWIFI system with wireless 

network and hosted application 

functionality in Boeing Model 777–200/ 

–200LR/–300/–300ER series airplanes. 

These airplanes, currently approved 

under Type Certificate No. T00001SE, 

are twin-engine, transport category 

airplanes, with a maximum takeoff 

weight between 535,000 lbs and 775,000 

lbs pounds, and a maximum passenger 

capacity of 550 persons. 

Type Certification Basis 

Under the provisions of title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

Archeion must show that the Boeing 

Model 777–200/–200LR/–300/–300ER 

series airplanes, as changed, continue to 

meet the applicable provisions of the 

regulations listed in Type Certificate No. 

T00001SE 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 Boeing Model 777–200/–200LR/ 

–300/–300ER 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 applicant apply 

for a supplemental type certificate to 

modify any other model included on the 

same type certificate 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 Boeing Model 777–200/ 

–200LR/–300/–300ER series airplanes 

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 § 11.38, and they become part of 

the type certification basis under 

§ 21.101. 

Novel or Unusual Design Feature 

The Boeing Model 777–200/–200LR/– 

300/–300ER series airplanes will 

incorporate the following novel or 

unusual design feature: 

A digital systems architecture for the 

installation of a system with wireless 

network and hosted application 

functionality that allows access, from 

sources internal to the airplane, to the 

airplane’s internal electronic 

components. 

Discussion 

The digital systems architecture for 

the installation of an Avionica avWIFI 

system with wireless network and 

hosted application functionality on 

these Boeing Model 777 airplanes is a 

novel or unusual design feature for 

transport category airplanes because it is 

composed of several connected 

networks. This proposed network 

architecture is used for a diverse set of 

airplane functions, including: 

• Flight-safety related control and 

navigation systems, 

• airline business and administrative 

support, and 

• passenger entertainment. 

The airplane control domain and 

airline information-services domain of 

these networks perform functions 

required for the safe operation and 

maintenance of the airplane. Previously, 

these domains had very limited 

connectivity with other network 

sources. This network architecture 

creates a potential for unauthorized 

persons to access the aircraft control 

domain and airline information-services 

domain from sources internal to the 

airplane, and presents security 

vulnerabilities related to the 

introduction of computer viruses and 

worms, user errors, and intentional 

sabotage of airplane electronic assets 

(networks, systems, and databases) 

critical to the safety and maintenance of 

the airplane. 

The existing FAA regulations did not 

anticipate these networked airplane 

system architectures. Furthermore, these 

regulations and the current guidance 

material do not address potential 

security vulnerabilities, which could be 

exploited by unauthorized access to 

airplane networks, data buses, and 

servers. Therefore, these special 

conditions ensure that the security (i.e., 

confidentiality, integrity, and 

availability) of airplane systems will not 

be compromised by unauthorized wired 

or wireless electronic connections from 

within the airplane. These special 

conditions also require the applicant to 

provide appropriate instructions to the 

operator to maintain all electronicsystem safeguards that have been 

implemented as part of the original 

network design so that this feature does 

not allow or reintroduce security 

threats. 

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 Boeing 

Model 777–200/–200LR/–300/–300ER 

series airplanes. Should Archeion apply 

at a later date for a supplemental type 

certificate to modify any other model 

included on Type Certificate No. 

T00001SE 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 

Boeing Model 777–200/–200LR/–300/– 

300ER series airplanes. It is not a rule 

of general applicability and affects only 

the applicant. 

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 Boeing Model 

777–200/–200LR/–300/–300ER series 

airplanes, as modified by Archeion 

Holdings, LLC, for airplane electronicsystem security protection from 

unauthorized internal access. 

(a) The applicant must ensure that the 

design provides isolation from, or 

airplane electronic-system security 

protection against, access by 

unauthorized sources internal to the 

airplane. The design must prevent 

inadvertent and malicious changes to, 

and all adverse impacts upon, airplane 

equipment, systems, networks, or other 

assets required for safe flight and 

operations. 

(b) The applicant must establish 

appropriate procedures to allow the 

operator to ensure that continued 

airworthiness of the aircraft is 

maintained, including all post type 

certification modifications that may 

have an impact on the approved 

electronic-system security safeguards. 


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Federal Register / Vol. 86, No. 132 / Wednesday, July 14, 2021 / Rules and Regulations 37017 

Issued in Des Moines, Washington, on July 

7, 2021. 

Mary A. Schooley, 

Acting Manager, Technical Innovation Policy 

Branch, Policy and Innovation Division, 

Aircraft Certification Service. 

[FR Doc. 2021–14975 Filed 7–13–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0335; Project 

Identifier MCAI–2020–01665–R; Amendment 

39–21632; AD 2021–14–05] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters Deutschland GmbH 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all 

Airbus Helicopters Deutschland GmbH 

Model MBB–BK 117 A–1, MBB–BK 117 

A–3, MBB–BK 117 A–4, MBB–BK 117 

B–1, MBB–BK 117 B–2, and MBB–BK 

117 C–1 helicopters. This AD was 

prompted by a report of sudden severe 

vibrations and a cracked open blade 

trailing edge caused by a loosened lead 

inner weight. This AD requires 

inspections to determine if any bolted 

main rotor blades are installed, and 

replacement of the affected main rotor 

blades. The FAA is issuing this AD to 

address the unsafe condition on these 

products. 

DATES: This AD is effective August 18, 

2021. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain document listed in this AD 

as of August 18, 2021. 

ADDRESSES: For service information 

identified in this final rule, contact 

Airbus Helicopters, 2701 N Forum 

Drive, Grand Prairie, TX 75052; phone: 

972–641–0000 or 800–232–0323; fax: 

972–641–3775; or at https://

www.airbus.com/helicopters/services/- 

support.html. You may view the 

referenced service information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 

76177. Service information that is 

incorporated by reference is also 

available at https://www.regulations.gov 

by searching for and locating Docket No. 

FAA–2021–0335. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0335; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

final rule, the Luftfahrt-Bundesamt AD, 

any comments received, and other 

information. The street address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, 

M–30, West Building Ground Floor, 

Room W12–140, 1200 New Jersey 

Avenue SE, Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Kathleen Arrigotti, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

phone and fax: 206–231–3218; email: 

kathleen.arrigotti@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all Airbus Helicopters 

Deutschland GmbH Model MBB–BK 117 

A–1, MBB–BK 117 A–3, MBB–BK 117 

A–4, MBB–BK 117 B–1, MBB–BK 117 

B–2, and MBB–BK 117 C–1 helicopters. 

The NPRM published in the Federal 

Register on April 26, 2021 (86 FR 

21965). In the NPRM, the FAA proposed 

to require inspections to determine if 

any bolted main rotor blades are 

installed, and replacement of the 

affected main rotor blades. The NPRM 

was prompted by a report of sudden 

severe vibrations and a cracked open 

blade trailing edge caused by a loosened 

lead inner weight. 

German AD D–2005–115, effective 

March 15, 2005 (German AD D–2005– 

115), issued by Luftfahrt-Bundesamt, 

which is the aviation authority for 

Germany, was issued to correct an 

unsafe condition for Eurocopter 

Deutschland (now Airbus Helicopters 

Deutschland GmbH) Model MBB–BK 

117 A–1, MBB–BK 117 A–3, MBB–BK 

117 A–4, MBB–BK 117 B–1, MBB–BK 

117 B–2, and MBB–BK 117 C–1 

helicopters. Luftfahrt-Bundesamt 

advises that during the flight of a BK117 

severe vibrations suddenly occurred, 

stemming from a cracked open blade 

trailing edge, which was traced to a 

loosened lead inner weight bolt. 

Additional inspection revealed extreme 

cavities of the lead weight resulting 

from the bolting process, which was 

performed as a repair for main rotor 

blades with bulging in the area of the 

lead inner weights. This condition, if 

not addressed, could result in loss of 

control of the helicopter. 

Accordingly, German AD D–2005–115 

requires an inspection and log card 

review to determine if any bolted main 

rotor blades are installed, and 

replacement of the affected main rotor 

blades. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

These helicopters have been approved 

by the aviation authority of Germany 

and are approved for operation in the 

United States. Pursuant to the FAA’s 

bilateral agreement with Germany (now 

a member of the European Union), 

Luftfahrt-Bundesamt, its technical 

representative, has notified the FAA of 

the unsafe condition described in its 

AD. The FAA reviewed the relevant 

data and determined that air safety 

requires adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

helicopters. Except for minor editorial 

changes, this AD is adopted as proposed 

in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Eurocopter Alert 

Service Bulletin No. ASB–MBB–BK117– 

10–125, dated February 14, 2005. This 

service information specifies procedures 

for an inspection (for cracking of the 

paint) and log card review (for a certain 

entry or equivalent) to determine if any 

bolted main rotor blades (i.e., main rotor 

blades with bolted lead inner weights) 

are installed, and replacement of the 

affected main rotor blades. 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in the ADDRESSES section. 

Costs of Compliance 

The FAA estimates that this AD 

affects 44 helicopters of U.S. Registry. 

Labor rates are estimated at $85 per 

work-hour. Based on these numbers, the 

FAA estimates the following costs to 

comply with this AD. 


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