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. 


cprice-sewell on PRODPC61 with PROPOSALS
Federal Register / Vol. 72, No. 71 / Friday, April 13, 2007 / Proposed Rules 18599 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2007–27533; Directorate Identifier 

2007–CE–022–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the Technical Agent 

for the Member States of the European 

Community, has issued AD No: 2006–

0277, dated September 06, 2006 

(referred to after this as ‘‘the MCAI’’), to 

correct an unsafe condition for the 

specified products. The MCAI states: 

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 a 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 MCAI requires: 

This airworthiness directive requires the 

retroactive installation of this bracket for all 

airplanes, including the airplanes with steel 

fittings. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Diamond Aircraft Industries GmbH 

has issued Mandatory Service Bulletin 

No. MSB–42–024/3, dated September 

19, 2006. The actions described in this 

service information are intended to 

correct the unsafe condition identified 

in the MCAI. 

FAA’s Determination and Requirements 

of the Proposed AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with this State of 

Design Authority, they have notified us 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all 

information and determined the unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This Proposed AD 

and the MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have proposed 

different actions in this AD from those 

in the MCAI in order to follow FAA 

policies. Any such differences are 

highlighted in a NOTE within the 

proposed AD. 

Costs of Compliance 

Based on the service information, we 

estimate that this proposed AD would 

affect about 70 products of U.S. registry. 

We also estimate that it would take 

about 1 work-hour per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $80 per work-hour. Required 

parts would cost about $208 per 

product. Where the service information 

lists required parts costs that are 

covered under warranty, we have 

assumed that there will be no charge for 

these costs. As we do not control 

warranty coverage for affected parties, 

some parties may incur costs higher 

than estimated here. 

Based on these figures, we estimate 

the cost of the proposed AD on U.S. 

operators to be $20,160, or $288 per 

product. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. ‘‘Subtitle VII: 

Aviation Programs,’’ describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in ‘‘Subtitle VII, 

Part A, Subpart III, Section 44701: 

General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this proposed AD 

would not have federalism implications 

under Executive Order 13132. This 

proposed AD would not have a 

substantial direct effect on the States, on 

the relationship between the national 

Government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify this proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by adding 

the following new AD: 

Diamond Aircraft Industries GmbH: Docket 

No. FAA–2007–27533; Directorate 

Identifier 2007–CE–022–AD. 


cprice-sewell on PRODPC61 with PROPOSALS
18600 Federal Register / Vol. 72, No. 71 / Friday, April 13, 2007 / Proposed Rules 

Comments Due Date 

(a) We must receive comments by May 14, 

2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to DA 42 airplanes, 

serial numbers 42.004 through 42.129, 

42.177, and 42.AC001, certificated in any 

category. 

Subject 

(d) Air Transport Association of America 

(ATA) Code 72: Engine. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

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 a 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. 

Actions and Compliance 

(f) Unless already done, within 50 hours 

time-in-service or 30 days after the effective 

date of this AD, whichever occurs first, 

install the additional steel bracket following 

Diamond Aircraft Industries GmbH 

Mandatory Service Bulletin NO. MSB–42–

024/3, dated September 19, 2006. 

Note 1: If the above action was 

accomplished following the procedures 

described in Diamond Aircraft Industries 

GmbH Mandatory Service Bulletin No. MSB–

42–024/2, dated August 31, 2006, you may 

take ‘‘unless already done’’ credit, and no 

further action per this AD is necessary. 

FAA AD Differences 

Note 2: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Standards Staff, 

FAA, ATTN: Sarjapur Nagarajan, Aerospace 

Engineer, FAA, Small Airplane Directorate, 

901 Locust, Room 301, Kansas City, Missouri 

64106; telephone: (816) 329–4145; fax: (816) 

329–4090, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. Before 

using any approved AMOC on any airplane 

to which the AMOC applies, notify your 

appropriate principal inspector (PI) in the 

FAA Flight Standards District Office (FSDO), 

or lacking a PI, your local FSDO. 

(2) Airworthy Product: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer or other source, 

use these actions if they are FAA-approved. 

Corrective actions are considered FAAapproved if they are approved by the State 

of Design Authority (or their delegated 

agent). You are required to assure the product 

is airworthy before it is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et.seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120–0056. 

Related Information 

(h) Refer to MCAI European Aviation 

Safety Agency (EASA) AD No: 2006–0277, 

dated September 06, 2006; and Diamond 

Aircraft Industries GmbH, Mandatory Service 

Bulletin No. MSB–42–024/3, dated 

September 19, 2006, for related information. 

Issued in Kansas City, Missouri, on April 

6, 2007. 

Kim Smith, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. E7–7050 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–2007–27708; Directorate 

Identifier 2007–CE–027–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: 

From airplanes that have installed the 

Auxiliary Fuel Tank Optional Design Change 

(O–M) No. 42–056, three in-service failures of 

the auxiliary fuel tank venting system have 

been reported. These failures have led to the 

inability to supply the complete auxiliary 

fuel quantity to the main tanks and the 

collapse of the auxiliary tank. It is suspected 

that the vent lines were obstructed either by 

ice accretion under certain climatic 

conditions or by blockage of the vent valves 

because of fuel contaminants. 

Undetected malfunctions of the venting 

system and damaged auxiliary fuel tanks may 

lead to a lower usable fuel quantity, 

subsequent fuel starvation and/or fuel 

spillage into the nacelle. 

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 


cprice-sewell on PRODPC61 with PROPOSALS