This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

18597 

Vol. 72, No. 71 

Friday, April 13, 2007 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 25 

[Docket No. NM364 Special Conditions No. 

25–07–01-SC] 

Special Conditions: Boeing Model 787– 

8 Airplane; Systems and Data 

Networks Security—Isolation or 

Protection From Unauthorized 

Passenger Domain Systems Access 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed special 

conditions. 

SUMMARY: This notice proposes special 

conditions for the Boeing Model 787–8 

airplane. This airplane will have novel 

or unusual design features when 

compared to the state of technology 

envisioned in the airworthiness 

standards for transport category 

airplanes. These novel or unusual 

design features are associated with 

connectivity of the passenger domain 

systems to the airplane critical systems 

and data networks. For these design 

features, the applicable airworthiness 

regulations do not contain adequate or 

appropriate safety standards for 

protection and security of airplane 

systems and data networks against 

unauthorized access. These proposed 

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. Additional 

special conditions will be issued for 

other novel or unusual design features 

of the Boeing Model 787–8 airplanes. 

DATES: Comments must be received on 

or before May 29, 2007. 

ADDRESSES: Comments on this proposal 

may be mailed in duplicate to: Federal 

Aviation Administration, Transport 

Airplane Directorate, Attention: Rules 

Docket (ANM–113), Docket No. NM364, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; or delivered in 

duplicate to the Transport Airplane 

Directorate at the above address. All 

comments must be marked Docket No. 

NM364. Comments may be inspected in 

the Rules Docket weekdays, except 

Federal holidays, between 7:30 a.m. and 

4 p.m. 

FOR FURTHER INFORMATION CONTACT: Will 

Struck, FAA, Airplane and Flight Crew 

Interface, ANM–111, Transport Airplane 

Directorate, Aircraft Certification 

Service, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356; 

telephone (425) 227–2764; facsimile 

(425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites interested persons to 

participate in this rulemaking by 

submitting 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 ask that 

you send us two copies of written 

comments. 

We will file in the docket all 

comments we receive as well as a report 

summarizing each substantive public 

contact with FAA personnel concerning 

these proposed special conditions. The 

docket is available for public inspection 

before and after the comment closing 

date. If you wish to review the docket 

in person, go to the address in the 

ADDRESSES section of this notice 

between 7:30 a.m. and 4 p.m., Monday 

through Friday, except Federal holidays. 

We will consider all comments we 

receive on or before the closing date for 

comments. We will consider comments 

filed late if it is possible to do so 

without incurring expense or delay. We 

may change the proposed special 

conditions based on comments we 

receive. 

If you want the FAA to acknowledge 

receipt of your comments on this 

proposal, include with your comments 

a pre-addressed, stamped postcard on 

which the docket number appears. We 

will stamp the date on the postcard and 

mail it back to you. 

Background 

On March 28, 2003, Boeing applied 

for an FAA type certificate for its new 

Boeing Model 787–8 passenger airplane. 

The Boeing Model 787–8 airplane will 

be an all-new, two-engine jet transport 

airplane with a two-aisle cabin. The 

maximum takeoff weight will be 

476,000 pounds, with a maximum 

passenger count of 381 passengers. 

Type Certification Basis 

Under provisions of 14 CFR 21.17, 

Boeing must show that Boeing Model 

787–8 airplanes (hereafter referred to as 

‘‘the 787’’) meet the applicable 

provisions of 14 CFR part 25, as 

amended by Amendments 25–1 through 

25–117, except §§ 25.809(a) and 25.812, 

which will remain at Amendment 25– 

115. If the Administrator finds that the 

applicable airworthiness regulations do 

not contain adequate or appropriate 

safety standards for the 787 because of 

a novel or unusual design feature, 

special conditions are prescribed under 

provisions of 14 CFR 21.16. 

In addition to the applicable 

airworthiness regulations and special 

conditions, the 787 must comply with 

the fuel vent and exhaust emission 

requirements of 14 CFR part 34 and the 

noise certification requirements of part 

36. In addition, the FAA must issue a 

finding of regulatory adequacy pursuant 

to section 611 of Public Law 92–574, the 

‘‘Noise Control Act of 1972.’’ 

Special conditions, as defined in 

§ 11.19, are issued in accordance with 

§ 11.38 and become part of the type 

certification basis in accordance with 

§ 21.17(a)(2). 

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, the special 

conditions would also apply to the other 

model under the provisions of § 21.101. 

Novel or Unusual Design Features 

The digital systems architecture for 

the 787 consists of several networks 

connected by electronics and embedded 

software. This proposed network 

architecture is used for a diverse set of 

functions, including the following. 

1. Flight-safety-related control and 

navigation and required systems 

(Aircraft Control Domain). 

2. Airline business and administrative 

support (Airline Information Services 

Domain). 

3. Passenger entertainment, 

information, and Internet services 


cprice-sewell on PRODPC61 with PROPOSALS
18598 Federal Register / Vol. 72, No. 71 / Friday, April 13, 2007 / Proposed Rules 

(Passenger Information and 

Entertainment Services Domain). 

The proposed architecture of the 787 

is different from that of existing 

production (and retrofitted) airplanes. It 

allows new kinds of passenger 

connectivity to previously isolated data 

networks connected to systems that 

perform functions required for the safe 

operation of the airplane. Because of 

this new passenger connectivity, the 

proposed data network design and 

integration may result in security 

vulnerabilities from intentional or 

unintentional corruption of data and 

systems critical to the safety and 

maintenance of the airplane. The 

existing regulations and guidance 

material did not anticipate this type of 

system architecture or electronic access 

to aircraft systems that provide flight 

critical functions. Furthermore, 14 CFR 

regulations and current system safety 

assessment policy and techniques do 

not address potential security 

vulnerabilities that could be caused by 

unauthorized access to aircraft data 

buses and servers. Therefore, a special 

condition is proposed to ensure that 

security, integrity, and availability of 

the aircraft systems and data networks 

are not compromised by certain wired 

or wireless electronic connections 

between airplane data buses and 

networks. 

Applicability 

As discussed above, these proposed 

special conditions are applicable to the 

787. Should Boeing apply at a later date 

for a change to the type certificate to 

include another model incorporating the 

same novel or unusual design features, 

these proposed special conditions 

would apply to that model as well 

under the provisions of § 21.101. 

Conclusion 

This action affects only certain novel 

or unusual design features of the 787. It 

is not a rule of general applicability, and 

it affects only the applicant that applied 

to the FAA for approval of these features 

on the airplane. 

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 Proposed Special Conditions 

Accordingly, the Administrator of the 

Federal Aviation Administration (FAA) 

proposes the following special 

conditions as part of the type 

certification basis for the Boeing Model 

787–8 airplane. 

The design shall prevent all inadvertent or 

malicious changes to, and all adverse impacts 

upon, all systems, networks, hardware, 

software, and data in the Aircraft Control 

Domain and in the Airline Information 

Domain from all points within the Passenger 

Information and Entertainment Domain. 

Issued in Renton, Washington, on April 5, 

2007. 

Stephen P. Boyd, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. E7–7065 Filed 4–12–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27533; Directorate 

Identifier 2007–CE–022–AD] 

RIN 2120–AA64 

Airworthiness Directives; Diamond 

Aircraft Industries GmbH Model DA 42 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above. This proposed 

AD results from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

Shortly after an engine change, the 

aluminium fitting attached to the engine 

gearbox holding lines and fittings of the 

propeller control system was found to be 

cracked. This led to a pressure loss in the 

propeller control system following a control 

system malfunction and led to an in-flight 

engine shutdown. 

The broken fitting is part of the engine 

installation and was initially a steel part. It 

was later modified by the engine 

manufacturer to an aluminium design. 

Investigation determined that the area is 

critical for cracks due to combination of 

mass, material and installation torque values. 

Diamond Aircraft Industries incorporated 

with Design Change MA ̈ M 42–184 an 

additional bracket into production airplanes 

to improve the installations and prevent 

vibration cracks. 

The proposed AD would require 

actions that are intended to address the 

unsafe condition described in the MCAI. 

DATES: We must receive comments on 

this proposed AD by May 14, 2007. 

ADDRESSES: You may send comments by 

any of the following methods: 

• DOT Docket Web site: Go to http:// 

dms.dot.gov and follow the instructions 

for sending your comments 

electronically. 

• Fax: (202) 493–2251. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov; or in 

person at the Docket Management 

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

Monday through Friday, except Federal 

holidays. The AD docket contains this 

proposed AD, the regulatory evaluation, 

any comments received, and other 

information. The street address for the 

Docket Office (telephone (800) 647–

5227) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: 

Sarjapur Nagarajan, Aerospace Engineer, 

FAA, Small Airplane Directorate, 901 

Locust, Room 301, Kansas City, 

Missouri 64106; telephone: (816) 329–

4145; fax: (816) 329–4090. 

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. This streamlined 

process will allow us to adopt MCAI 

safety requirements in a more efficient 

manner and will reduce safety risks to 

the public. This process continues to 

follow all FAA AD issuance processes to 

meet legal, economic, Administrative 

Procedure Act, and Federal Register 

requirements. We also continue to meet 

our technical decision-making 

responsibilities to identify and correct 

unsafe conditions on U.S.-certificated 

products. 

This proposed AD references the 

MCAI and related service information 

that we considered in forming the 

engineering basis to correct the unsafe 

condition. The proposed AD contains 

text copied from the MCAI and for this 

reason might not follow our plain 

language principles. 


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