Federal Register / Vol. 75, No. 35 / Tuesday, February 23, 2010 / Proposed Rules 8003 

Actions Compliance Procedures 

(1) Inspect the essential bus lightning strike 

protection for proper installation of MOV and 

spark gap wiring.

Within the next 200 hours time-in-service after 

the effective date of this AD or within the 

next 12 months after the effective date of 

this AD, whichever occurs first.

Follow Hawker Mandatory Service Bulletin SB 

24–3995, issued September 2009. 

(2) Where improper wiring installation is found, 

rework the essential bus lightning strike wiring installation for the MOV and spark gap.

Before further flight after the inspection in 

paragraph (f)(1) of this AD.

Follow Hawker Mandatory Service Bulletin SB 

24–3995, issued September 2009. 

Alternative Methods of Compliance 

(AMOCs) 

(g) The Manager, Wichita Aircraft 

Certification Office (ACO), 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: Kevin 

Schwemmer, Aerospace Engineer, FAA, 

Wichita Aircraft Certification Office (ACO), 

1801 Airport Road, Room 100, Wichita, 

Kansas 67209; telephone: (316) 946–4174; 

fax: (316) 946–4107; e-mail: 

kevin.schwemmer@faa.gov. 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. 

Related Information 

(h) To get copies of the service information 

referenced in this AD, contact Hawker 

Beechcraft Corporation, 9709 East Central, 

Wichita, Kansas 67201; telephone: (316) 676– 

5034; fax: (316) 676–6614; Internet: https:// 

www.hawkerbeechcraft.com/service_support/ 

pubs/. To view the AD docket, go to U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building Ground 

Floor, Room W12–140, 1200 New Jersey 

Avenue, SE., Washington, DC 20590, or on 

the Internet at http://www.regulations.gov. 

Issued in Kansas City, Missouri, on 

February 16, 2010. 

Kim Smith, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. 2010–3538 Filed 2–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0129; Directorate 

Identifier 2009–NM–245–AD] 

RIN 2120–AA64 

Airworthiness Directives; Airbus A318, 

A319, A320, A321 Series 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: Several occurrences of loss 

of the AC [alternating current] BUS 1 

have been reported which led in some 

instances to the loss of the AC ESS 

[essential] BUS and DC [direct current] 

ESS BUS and connected systems. The 

affected systems include multiple flight 

deck Display Units (Primary Flight 

Display, Navigation Display and Upper 

Electronic Centralised Aircraft 

Monitoring display). The loss of 

multiple display units, if not corrected 

expediently during a high workload 

period, potentially affects the capability 

of the flight crew and could contribute 

to a loss of situational awareness and 

consequent control of the aeroplane, 

which would constitute an unsafe 

condition. 

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 April 9, 2010. 

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. 

For service information identified in 

this proposed AD, contact Airbus, 

Airworthiness Office—EAS, 1 Rond 

Point Maurice Bellonte, 31707 Blagnac 

Cedex, France; telephone +33 5 61 93 36 

96; fax +33 5 61 93 44 51; e-mail: 

account.airworth-eas@airbus.com; 

Internet http://www.airbus.com. You 

may review copies of the referenced 

service information at the FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington. 

For information on the availability of 

this material at the FAA, call 425–227– 

1221 or 425–227–1152. 

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: Tim 

Dulin, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–2141; 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–2010–0129; Directorate Identifier 

2009–NM–245–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 have lengthened the 30-day 

comment period for proposed ADs that 

address MCAI originated by aviation 

authorities of other countries to provide 

adequate time for interested parties to 

submit comments. The comment period 

for these proposed ADs is now typically 

45 days, which is consistent with the 

comment period for domestic transport 

ADs. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

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8004 Federal Register / Vol. 75, No. 35 / Tuesday, February 23, 2010 / Proposed Rules 

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 EASA 

Airworthiness Directive 2009–0235, 

dated October 29, 2009 (referred to after 

this as ‘‘the MCAI’’), to correct an unsafe 

condition for the specified products. 

The MCAI states: 

Several occurrences of loss of the AC 

[alternating current] BUS 1 have been 

reported which led in some instances to the 

loss of the AC ESS [essential] BUS and DC 

[direct current] ESS BUS and connected 

systems. The affected systems include 

multiple flight deck Display Units (Primary 

Flight Display, Navigation Display and Upper 

Electronic Centralised Aircraft Monitoring 

display). 

The reasons for these events have been 

investigated but have not been fully 

established for all cases. 

Due to the range of system losses some 

crews reported difficulty in establishing the 

failure cause during the events and, 

consequently, the appropriate actions to be 

taken may not be completed in a timely 

manner. 

The loss of multiple display units, if not 

corrected expediently during a high 

workload period, potentially affects the 

capability of the flight crew and could 

contribute to a loss of situational awareness 

and consequent control of the aeroplane, 

which would constitute an unsafe condition. 

This AD therefore mandates the 

modification of the electrical network 

configuration management logic consisting in 

adding an automatic switching of the AC and 

DC ESS BUS power supply such that upon 

the loss of the AC BUS 1, the AC BUS 2 will 

automatically take over the power supply. On 

pre-MOD aeroplanes, this power supply 

switching can only be accomplished 

manually from the cockpit and is covered by 

an Electronic Centralized Aircraft Monitoring 

(ECAM) procedure. 

The modification of the electrical 

power distribution system includes, 

depending on the configuration, adding 

a new circuit breaker and new relay to 

the AC/DC ESS BUS circuit, and adding 

a diode between a certain relay and 

terminal block. You may obtain further 

information by examining the MCAI in 

the AD docket. 

Relevant Service Information 

Airbus has issued Service Bulletin 

A320–24–1120, Revision 03, dated July 

10, 2009. 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 633 products of U.S. 

registry. We also estimate that it would 

take about 46 work-hours per product to 

comply with the basic requirements of 

this proposed AD. The average labor 

rate is $85 per work-hour. Required 

parts would cost about $2,200 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 

$3,867,630, or $6,110 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, Incorporation by reference, 

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: 

Airbus: Docket No. FAA–2010–0129; 

Directorate Identifier 2009–NM–245–AD. 

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Federal Register / Vol. 75, No. 35 / Tuesday, February 23, 2010 / Proposed Rules 8005 

Comments Due Date 

(a) We must receive comments by April 9, 

2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Airbus Model A318– 

111, –112, –121, and –122 airplanes; Model 

A319–111, –112, –113, –114, –115, –131, 

–132, and –133 airplanes; Model A320–111, 

–211, –212, –214, –231, –232, and –233 

airplanes; and Model A321–111, –112, –131, 

–211, –212, –213, –231, and –232 airplanes; 

certificated in any category; all manufacturer 

serial numbers; except airplanes that have 

received Airbus modification 37317 in 

production. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 24: Electrical power. 

Reason 

(e) The mandatory continuing 

airworthiness information (MCAI) states: 

‘‘Several occurrences of loss of the AC 

[alternating current] BUS 1 have been 

reported which led in some instances to the 

loss of the AC ESS [essential] BUS and DC 

[direct current] ESS BUS and connected 

systems. The affected systems include 

multiple flight deck Display Units (Primary 

Flight Display, Navigation Display and Upper 

Electronic Centralised Aircraft Monitoring 

display). 

‘‘The reasons for these events have been 

investigated but have not been fully 

established for all cases. 

‘‘Due to the range of system losses some 

crews reported difficulty in establishing the 

failure cause during the events and, 

consequently, the appropriate actions to be 

taken may not be completed in a timely 

manner. 

‘‘The loss of multiple display units, if not 

corrected expediently during a high 

workload period, potentially affects the 

capability of the flight crew and could 

contribute to a loss of situational awareness 

and consequent control of the aeroplane, 

which would constitute an unsafe condition. 

‘‘This AD therefore mandates the 

modification of the electrical network 

configuration management logic consisting in 

adding an automatic switching of the AC and 

DC ESS BUS power supply such that upon 

the loss of the AC BUS 1, the AC BUS 2 will 

automatically take over the power supply. On 

pre-MOD aeroplanes, this power supply 

switching can only be accomplished 

manually from the cockpit and is covered by 

an Electronic Centralized Aircraft Monitoring 

(ECAM) procedure.’’ 

The modification of the electrical power 

distribution system includes, depending on 

the configuration, adding a new circuit 

breaker and new relay to the AC/DC ESS BUS 

circuit, and adding a diode between a certain 

relay and terminal block. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Actions 

(g) Within 48 months after the effective 

date of this AD, modify the electrical power 

distribution system, in accordance with the 

Accomplishment Instructions of Airbus 

Service Bulletin A320–24–1120, Revision 03, 

dated July 10, 2009. 

(h) Actions accomplished before the 

effective date of this AD, in accordance with 

a service bulletin identified in Table 1 of this 

AD, are considered acceptable for 

compliance with the corresponding actions 

specified in this AD. 

TABLE 1—CREDIT SERVICE INFORMATION

Airbus Service Bulletin— Revision— Dated— 

A320–24–1120 .................................................. Original ............................................................. May 31, 2007. 

A320–24–1120 .................................................. 01 ...................................................................... December 19, 2007. 

A320–24–1120 .................................................. 02 ...................................................................... July 8, 2008. 

FAA AD Differences 

Note 1: This AD differs from the MCAI 

and/or service information as follows: No 

differences. 

Other FAA AD Provisions 

(i) 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: Tim Dulin, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue SW., Renton, 

Washington 98057–3356; telephone (425) 

227–2141; fax (425) 227–1149. Before using 

any approved AMOC on any airplane to 

which the AMOC applies, notify your 

principal maintenance inspector (PMI) or 

principal avionics inspector (PAI), as 

appropriate, or lacking a principal inspector, 

your local Flight Standards District Office. 

The AMOC approval letter must specifically 

reference this AD. 

(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 FAA-approved 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 

(j) Refer to MCAI European Aviation Safety 

Agency (EASA) Airworthiness Directive 

2009–0235, dated October 29, 2009; and 

Airbus Service Bulletin A320–24–1120, 

Revision 03, dated July 10, 2009; for related 

information. 

Issued in Renton, Washington, on February 

16, 2010. 

Stephen P. Boyd, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2010–3442 Filed 2–22–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF HOMELAND 

SECURITY 

Coast Guard 

33 CFR Part 165 

[Docket No. USCG–2010–0023] 

RIN 1625–AA00 

Safety Zone; Wicomico Community 

Fireworks, Great Wicomico River, Mila, 

VA 

AGENCY: Coast Guard, DHS. 

ACTION: Notice of proposed rulemaking. 

SUMMARY: The Coast Guard proposes 

establishing a safety zone on the Great 

Wicomico River in the vicinity of Mila, 

VA in support of the Wicomico 

Community Fireworks event. This 

action is intended to restrict vessel 

traffic movement on the Great Wicomico 

River to protect mariners from the 

hazards associated with fireworks 

displays. 

DATES: Comments and related material 

must be received by the Coast Guard on 

or before April 26, 2010. 

ADDRESSES: You may submit comments 

identified by docket number USCG– 

mstockstill on DSKH9S0YB1PROD with PROPOSALS