6620 Federal Register / Vol. 73, No. 24 / Tuesday, February 5, 2008 / Proposed Rules 

Other FAA AD Provisions 

(g) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Branch, ANM–116, Transport Airplane 

Directorate, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Tom Rodriguez, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone (425) 

227–1137; fax (425) 227–1149. 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, 

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) Airworthiness 

Directive 2006–0276, dated September 6, 

2006; and Zodiac Service Bulletins 5035–30–

001 and 5035–30–002, both dated April 15, 

2002; for related information. 

Issued in Renton, Washington, on January 

24, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–1984 Filed 2–4–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0118; Directorate 

Identifier 2007–NM–289–AD] 

RIN 2120–AA64 

Airworthiness Directives; Dassault 

Model Mystere-Falcon 50 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), 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: 

This Airworthiness Directive (AD) is 

issued following the discovery of a risk of 

chafing between an electrical feeder bundle 

and a bus bar under the circuit breaker panel. 

Most of the time, this possible chafing would 

be dormant and would lead to an uneventful 

loss of segregation within the different 

electrical system components. However, 

missing segregation combined with 

additional electrical failures may impair 

flight safety. 

* * * * * 

Chafing between an electrical feeder 

bundle and a bus bar under the circuit 

breaker panel could lead to electrical 

arcing, which could result in smoke and 

fire in the cockpit. 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 March 6, 2008. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M–

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M–

30, West Building Ground Floor, Room 

W12–40, 1200 New Jersey Avenue, SE., 

Washington, DC, between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Operations office 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 Operations 

office (telephone (800) 647–5527) is in 

the ADDRESSES section. Comments will 

be available in the AD docket shortly 

after receipt. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–1137; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

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–2008–0118; Directorate Identifier 

2007–NM–289–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 based on those comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.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 Airworthiness 

Directive 2007–0175, dated June 28, 

2007 (referred to after this as ‘‘the 

MCAI’’), to correct an unsafe condition 

for the specified products. The MCAI 

states: 

This Airworthiness Directive (AD) is 

issued following the discovery of a risk of 

chafing between an electrical feeder bundle 

and a bus bar under the circuit breaker panel. 

Most of the time, this possible chafing would 

be dormant and would lead to an uneventful 

loss of segregation within the different 

electrical system components. However, 

missing segregation combined with 

additional electrical failures may impair 

flight safety. 

This AD mandates inspection of the 

electrical feeder bundle, and modification of 

its routing under the circuit breaker panel 

through implementation of modification 

M3093. 

Chafing between an electrical feeder 

bundle and a bus bar under the circuit 

breaker panel could lead to electrical 

arcing, which could result in smoke and 

fire in the cockpit. 

The corrective action includes 

repairing or replacing damaged wiring; 

re-routing the feeder cables above the 

wiring of the ‘‘Avionic Master’’ and 

‘‘Aux Bat’’ relays; installing a protective 

sheath on the feeder cables; adding 

spacers to separate the bus bar wiring 

assemblies from the feeder cables; and 

adding Teflon protection on the feeder 

cables and securing the feeder cables 


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Federal Register / Vol. 73, No. 24 / Tuesday, February 5, 2008 / Proposed Rules 6621 

with wiring retaining strips. You may 

obtain further information by examining 

the MCAI in the AD docket. 

Relevant Service Information 

Dassault has issued Service Bulletin 

F50–483, dated June 6, 2007, including 

Erratum dated July 2007. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This 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 the State of 

Design Authority, we have been notified 

of the unsafe condition described in the 

MCAI and service information 

referenced above. We are proposing this 

AD because we evaluated all pertinent 

information and determined an unsafe 

condition exists and is likely to exist or 

develop on other products of the same 

type design. 

Differences Between This 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 76 products of U.S. registry. 

We also estimate that it would take 

about 12 work-hours 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 $0 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 $72,960, or $960 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: 

Dassault Aviation: Docket No. FAA–2008–

0118; Directorate Identifier 2007–NM–

289–AD. 

Comments Due Date 

(a) We must receive comments by March 6, 

2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Dassault Model 

Mystere-Falcon 50 airplanes, certificated in 

any category, serial number (S/N) 251 and 

S/N 253 and subsequent, without 

modification M3093 implemented. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 24: Electrical power. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

This Airworthiness Directive (AD) is 

issued following the discovery of a risk of 

chafing between an electrical feeder bundle 

and a bus bar under the circuit breaker panel. 

Most of the time, this possible chafing would 

be dormant and would lead to an uneventful 

loss of segregation within the different 

electrical system components. However, 

missing segregation combined with 

additional electrical failures may impair 

flight safety. 

This AD mandates inspection of the 

electrical feeder bundle, and modification of 

its routing under the circuit breaker panel 

through implementation of modification 

M3093. 

Chafing between an electrical feeder bundle 

and a bus bar under the circuit breaker panel 

could lead to electrical arcing, which could 

result in smoke and fire in the cockpit. The 

corrective action includes repairing or 

replacing damaged wiring; re-routing the 

feeder cables above the wiring of the 

‘‘Avionic Master’’ and ‘‘Aux Bat’’ relays; 

installing a protective sheath on the feeder 

cables; adding spacers to separate the bus bar 

wiring assemblies from the feeder cables; and 

adding Teflon protection on the feeder cables 

and securing the feeder cables with wiring 

retaining strips. 

Actions and Compliance 

(f) Unless already done: Within 13 months 

after the effective date of this AD, inspect for 

damage of the electrical feeder bundle; repair 

or replace wiring, as applicable; and modify 

its routing as detailed in the accomplishment 

instructions paragraph of Dassault Service 

Bulletin F50–483, dated June 6, 2007, 

including Erratum dated July 2007. 


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6622 Federal Register / Vol. 73, No. 24 / Tuesday, February 5, 2008 / Proposed Rules 

FAA AD Differences 

Note: 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, International 

Branch, ANM–116, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

Send information to ATTN: Tom Rodriguez, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone (425) 

227–1137; fax (425) 227–1149. 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, 

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 EASA Airworthiness 

Directive 2007–0175, dated June 28, 2007; 

and Dassault Service Bulletin F50–483, dated 

June 6, 2007, including Erratum dated July 

2007, for related information. 

Issued in Renton, Washington, on January 

24, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–1985 Filed 2–4–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0123; Directorate 

Identifier 2007–NM–056–AD] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Model DC–8–11, DC–8–12, 

DC–8–21, DC–8–31, DC–8–32, DC–8–

33, DC–8–41, DC–8–42, and DC–8–43 

Airplanes; Model DC–8–51, DC–8–52, 

DC–8–53, and DC–8–55 Airplanes; 

Model DC–8F–54 and DC–8F–55 

Airplanes; Model DC–8–61, DC–8–62, 

and DC–8–63 Airplanes; Model DC–8–

61F, DC–8–62F, and DC–8–63F 

Airplanes; Model DC–8–71, DC–8–72, 

and DC–8–73 Airplanes; and Model 

DC–8–71F, DC–8–72F, and DC–8–73F 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) that applies to 

McDonnell Douglas Model DC–8 

airplanes. The existing AD currently 

requires, among other things, revision of 

an existing program of structural 

inspections. This proposed AD would 

require implementation of a program of 

structural inspections of baseline 

structure to detect and correct fatigue 

cracking in order to ensure the 

continued airworthiness of these 

airplanes as they approach the 

manufacturer’s original fatigue design 

life goal. This proposed AD results from 

a significant number of these airplanes 

approaching or exceeding the design 

service goal on which the initial type 

certification approval was predicated. 

We are proposing this AD to detect and 

correct fatigue cracking that could 

compromise the structural integrity of 

these airplanes. 

DATES: We must receive comments on 

this proposed AD by March 21, 2008. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

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

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M–

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M–

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue, SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Long Beach Division, 3855 

Lakewood Boulevard, Long Beach, 

California 90846, Attention: Data and 

Service Management, Dept. C1–L5A 

(D800–0024). 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.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 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Jon 

Mowery, Aerospace Engineer, Airframe 

Branch, ANM–120L, FAA, Los Angeles 

Aircraft Certification Office, 3960 

Paramount Boulevard, Lakewood, 

California 90712–4137; telephone (562) 

627–5322; fax (562) 627–5210. 

SUPPLEMENTARY INFORMATION: 

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–2008–0123; Directorate Identifier 

2007-NM–056-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:// 

www.regulations.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 

On January 11, 1993, we issued AD 

93–01–15, amendment 39–8469 (58 FR 

5576, January 22, 1993), for McDonnell 

Douglas Model DC–8 airplanes. That AD 

requires structural inspections to detect 

fatigue cracking, reporting of the 

inspection results, and repair, as 


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