32640 Federal Register / Vol. 79, No. 109 / Friday, June 6, 2014 / Rules and Regulations 

certification basis for the Bombardier 

Aerospace Models BD–500–1A10 and 

BD–500–1A11 series airplanes. 

Flight Envelope Protection—HighSpeed Limiting 

■ 1. In addition to § 25.143, the 

following requirements apply: 

Operation of the high-speed limiter 

during all routine and descent 

procedure flight must not impede 

normal attainment of speeds up to 

overspeed warning. 

Issued in Renton, Washington, on April 22, 

2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–13243 Filed 6–5–14; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. FAA–2014–0301; Special 

Conditions No. 25–550–SC] 

Special Conditions: The Boeing 

Company, Models 737–700, –700C, 

–800, –900ER, –7, –8, and –9 Series 

Airplanes; Airplane Electronic Systems 

Security Protection From Unauthorized 

External Access 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final Special Condition; 

Request for Comments. 

SUMMARY: These special conditions are 

issued for the Boeing Company Models 

737–700, –700C, –800, –900ER, –7, –8, 

and –9 series airplanes. These airplanes 

will have novel or unusual design 

features associated with the architecture 

and connectivity capabilities of the 

airplanes’ computer systems and 

networks, which may allow access to or 

by external computer systems and 

networks and may result in security 

vulnerabilities to the airplanes’ systems. 

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: The effective date of these 

special conditions is June 6, 2014. We 

must receive your comments by July 21, 

2014. 

ADDRESSES: Send comments identified 

by docket number FAA–2014–0301 

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: The FAA will post all 

comments it receives, without change, 

to http://www.regulations.gov/, 

including any personal information the 

commenter provides. Using the search 

function of the docket Web site, anyone 

can find and read the electronic form of 

all comments received into any FAA 

docket, including the name of the 

individual sending the comment (or 

signing the comment for an association, 

business, labor union, etc.). DOT’s 

complete Privacy Act Statement can be 

found in the Federal Register published 

on April 11, 2000 (65 FR 19477–19478), 

as well as at http://DocketsInfo.dot. 

gov/. 

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 the 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, FAA, Airplane and 

Flight Crew Interface Branch, ANM– 

111, Transport Airplane Directorate, 

Aircraft Certification Service, 1601 Lind 

Avenue SW., Renton, Washington 

98057–3356; telephone 425–227–1298; 

facsimile 425–227–1149. 

SUPPLEMENTARY INFORMATION: The FAA 

has determined that notice of, and 

opportunity for prior public comment 

on, these special conditions is 

impracticable because these procedures 

would significantly delay issuance of 

the design approval and thus delivery of 

the affected aircraft. In addition, the 

substance of these special conditions 

has been subject to the public comment 

process in several prior instances with 

no substantive comments received. The 

FAA therefore finds that good cause 

exists for making these special 

conditions effective upon publication in 

the Federal Register. 

Comments Invited 

We invite 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. 

We will consider all comments we 

receive by the closing date for 

comments. We may change these special 

conditions based on the comments we 

receive. 

Background 

On January 27, 2012, the Boeing 

Company applied for an amendment to 

Type Certificate No. A16WE to include 

new minor models, 737–7, –8, and –9. 

The Models 737–7, –8, and –9, which 

are derivatives of the 737–700, –800, 

–900ER currently approved under Type 

Certificate No. A16WE, are passenger 

series airplanes designed to 

substantially reduce fuel burn and 

community noise. In addition, the 

design will include a new CFM LEAP– 

1B engine with a 68.4-inch diameter fan, 

8-inch longer nose gear to accommodate 

the larger engine, a relofted tailcone 

(which requires the elevator to be 

trimmed and the elevator tab to be 

relocated outboard to accommodate the 

new contours), new horizontal stabilizer 

strakelets, a retractable auxiliary power 

unit inlet door, fly-by-wire spoilers, 

strengthened flight deck bulkhead, and 

a new winglet design. 

Type Certification Basis 

Under the provisions of Title 14, Code 

of Federal Regulations (14 CFR) 21.101, 

The Boeing Company must show that 

the Models 737–700, –700C, –800, 

–900ER, –7, –8, and –9 series airplanes 

meet the applicable provisions of the 

regulations incorporated by reference in 

Type Certificate No. A16WE or the 

applicable regulations in effect on the 

date of application for the change to the 

type certificate. The regulations 

incorporated by reference in the type 

certificate are commonly referred to as 

the ‘‘original type certification basis.’’ In 

addition, the certification basis includes 

certain special conditions, exemptions, 

or later amended sections of the 

applicable part that are not relevant to 

these special conditions. 

If the Administrator finds that the 

applicable airworthiness regulations 

(i.e., 14 CFR part 25) do not contain 

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Federal Register / Vol. 79, No. 109 / Friday, June 6, 2014 / Rules and Regulations 32641 

adequate or appropriate safety standards 

for the 737–700, –700C, –800, –900ER, 

–7, –8, and –9 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 or similar 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, the special conditions 

would also apply to the other model. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the 737–700, –700C, –800, 

–900ER, –7, –8, and –9 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 Features 

The Boeing Models 737–700, –700C, 

–800, –900ER, –7, –8, and –9 series 

airplanes will incorporate the following 

novel or unusual design features: Digital 

systems architecture composed of 

several connected networks. This 

network architecture and network 

configuration may be used for or 

interfaced with a diverse set of 

functions, including: 

• Flight safety related control, 

communication, and navigation systems 

(aircraft control domain); 

• Operator business and 

administrative support (operator 

information domain); and 

• Passenger information and 

entertainment systems (passenger 

entertainment domain), and the 

capability to allow access to or by 

external network sources. 

Discussion 

The proposed architecture and 

network configuration of the Models 

737–700, –700C, –800, –900ER, –7, –8, 

and –9 series airplanes may allow 

increased connectivity to and access 

from external network sources and 

operations and maintenance networks to 

the aircraft control domain and operator 

information domain. The airplane 

control domain and operator 

information domain perform functions 

required for the safe operation and 

maintenance of the airplane. Previously 

these domains had very limited 

connectivity with external network 

sources. 

The architecture and network 

configuration may allow the 

exploitation of network security 

vulnerabilities resulting in intentional 

or unintentional destruction, disruption, 

degradation, or exploitation of data, 

systems, and networks critical to the 

safety and maintenance of the airplane. 

The existing regulations and guidance 

material did not anticipate these types 

of airplane system architectures. 

Furthermore, 14 CFR regulations and 

current system safety assessment policy 

and techniques do not address potential 

security vulnerabilities, which could be 

exploited by unauthorized access to 

airplane networks, data buses, and 

servers. Therefore, these special 

conditions and a means of compliance 

are proposed to ensure that the security 

(i.e., confidentiality, integrity, and 

availability) of airplane systems is not 

compromised by unauthorized wired or 

wireless electronic connections. 

Applicability 

As discussed above, these special 

conditions are applicable to the Models 

737–700, –700C, –800, –900ER, –7, –8, 

and –9 series airplanes. Should The 

Boeing Company apply at a later date 

for a change to the type certificate to 

include another model incorporating the 

same novel or unusual design feature, 

the special conditions would apply to 

that model as well. 

Conclusion 

This action affects only certain novel 

or unusual design features on certain 

model series of airplanes. It is not a rule 

of general applicability. 

The substance of these special 

conditions has been subjected to the 

notice and comment period in several 

prior instances and has been derived 

without substantive change from those 

previously issued. It is unlikely that 

prior public comment would result in a 

significant change from the substance 

contained herein. Therefore, because a 

delay would significantly affect the 

certification of the airplane, the FAA 

has determined that prior public notice 

and comment are unnecessary and 

impracticable, and good cause exists for 

adopting these special conditions upon 

issuance. The FAA is requesting 

comments to allow interested persons to 

submit views that may not have been 

submitted in response to the prior 

opportunities for comment described 

above. 

List of Subjects in 14 CFR Part 25 

Aircraft, Aviation safety, Reporting 

and recordkeeping requirements. 

The authority citation for these 

special conditions is as follows: 

Authority: 49 U.S.C. 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 The Boeing 

Company Models 737–700, –700C, 

–800, –900ER, –7, –8, and –9 series 

airplanes. 

Airplane Electronic Systems Security 

Protection From Unauthorized External 

Access 

1. The applicant must ensure that the 

airplanes’ electronic systems are 

protected from access by unauthorized 

sources external to the airplane, 

including those possibly caused by 

maintenance activity. 

2. 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. 

3. The applicant must establish 

appropriate procedures to allow the 

operator to ensure that continued 

airworthiness of the airplane is 

maintained, including all post type 

certification modifications that may 

have an impact on the approved 

electronic system security safeguards. 

Issued in Renton, Washington, on May 5, 

2014. 

Jeffrey E. Duven, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2014–13244 Filed 6–5–14; 8:45 am] 

BILLING CODE 4910–13–P 

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