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

74663 

Vol. 75, No. 230 

Wednesday, December 1, 2010 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1159; Directorate 

Identifier 2010–NM–006–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 747–400 and –400D 

Series Airplanes 

AGENCY: Federal Aviation 

Administration, DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Model 747–400 and –400D series 

airplanes. This proposed AD would 

require a general visual inspection to 

determine the routing of the wire 

bundles in the number two and number 

three engine pylons near the leading 

edge, and related investigative and 

corrective actions, if necessary. For 

certain airplanes, this proposed AD 

would also require certain concurrent 

actions. This proposed AD results from 

a report of a fuel leak from the drain line 

of the number two engine pylon. We are 

proposing this AD to detect and correct 

chafing of the main fuel feed tube and 

the alternating current motor-driven 

hydraulic pump wire bundle, which 

could lead to arcing from the exposed 

wire to the fuel feed tube, and could 

result in a fire or explosion. 

DATES: We must receive comments on 

this proposed AD by January 18, 2011. 

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 proposed AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.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. 

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: 

Tung Tran, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356, telephone 

(425) 917–6505; fax (425) 917–6590. 

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–2010–1159; Directorate Identifier 

2010–NM–006–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 

We received a report of a Model 747– 

400 airplane arriving at a gate with a 

fuel leak from the drain line of the 

number two engine pylon. An 

investigation revealed that the 

alternating current motor-driven pump 

wire bundle was incorrectly routed and 

touching the fuel feed tube, which 

caused chafing of the fuel feed tube and 

the resultant leak. If not detected and 

corrected, chafing of the main fuel feed 

tube and the alternating current motordriven hydraulic pump wire bundle 

could lead to arcing from the exposed 

wire to the fuel feed tube, and could 

result in a fire or explosion. 

Related AD 

We issued AD 92–27–13, amendment 

39–8448 (58 FR 5920, January 25, 1993), 

on December 17, 1992, for Model 747– 

400 series airplanes. We issued that AD 

to require repetitive inspections to 

detect damage, chafing, and improper 

clearance between the electrical power 

feeder cables and engine fuel supply 

tube, and corrective actions, if 

necessary; and modification of the 

electrical power feeder cable 

installation. 

Relevant Service Information 

We have reviewed Boeing Service 

Bulletin 747–29A2114, Revision 1, 

dated July 15, 2010. The service bulletin 

describes procedures for a general visual 

inspection to determine the routing of 

the wire bundles in the number two and 

number three engine pylons near the 

leading edge, and related investigative 

and corrective actions if necessary. 

Related investigative actions include a 

general visual inspection for damage 

between the wire bundle and the fuel 

feed tube. Corrective actions include 

repairing the wire bundle, repairing or 

replacing the fuel feed tube where the 

wire bundle goes across the tube, and 

changing the routing configuration for 

the wire bundle to above the support 

bracket. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
74664 Federal Register / Vol. 75, No. 230 / Wednesday, December 1, 2010 / Proposed Rules 

Boeing Service Bulletin 747– 

29A2114, Revision 1, dated July 15, 

2010, refers to Boeing Alert Service 

Bulletin 747–24A2168, Revision 1, 

dated December 5, 1991; Boeing Alert 

Service Bulletin 747–24A2168, Revision 

2, dated September 24, 1992; or Boeing 

Service Bulletin 747–24A2168, Revision 

3, dated July 29, 1993; for actions that 

must be done prior to or concurrently 

with the actions specified in Boeing 

Service Bulletin 747–29A2114, Revision 

1, dated July 15, 2010. Boeing Service 

Bulletin 747–24A2168, Revision 3, 

dated July 29, 1993, specifies, for certain 

airplanes, procedures for installing the 

cable support brackets in the number 

two and number three strut, and related 

investigative and corrective actions, if 

necessary. The related investigative 

action is a detailed inspection of the 

clearance between the bracket and an 

adjacent pneumatic duct. The corrective 

action is adjusting the pneumatic duct, 

if necessary. AD 92–27–13 refers to 

Boeing Alert Service Bulletin 747– 

24A2168, Revision 1, dated December 5, 

1991; and Revision 2, dated September 

24, 1992; as appropriate sources of 

service information for doing certain 

actions required by that AD. 

FAA’s Determination and Requirements 

of This Proposed AD 

We are proposing this AD because we 

evaluated all relevant information and 

determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. This proposed AD would 

require accomplishing the actions 

specified in the service information 

described previously. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 15 airplanes of U.S. 

registry. The following table provides 

the estimated costs for U.S. operators to 

comply with this proposed AD. 

TABLE—ESTIMATED COSTS

Action Work hours Average labor 

rate per hour Parts Cost per product 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Inspection ................................................. 1 $85 $0 $85 15 $1,275 

Concurrent Inspection and Bracket Installation ............................................... 6 85 0 510 15 7,650 

The cost estimate figure discussed 

above is based on assumptions that no 

operator has yet accomplished any of 

the actions required by this proposed 

AD, and that no operator would 

accomplish those actions in the future if 

this AD were not adopted. However, we 

have been advised that the concurrent 

inspection and bracket installation have 

already been done on some affected 

airplanes. Therefore, the future 

economic cost impact of this rule on 

U.S. operators is expected to be less 

than the cost impact figure indicated 

above. 

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. 

You can find our regulatory 

evaluation and the estimated costs of 

compliance 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: 

The Boeing Company: Docket No. FAA– 

2010–1159; Directorate Identifier 2010– 

NM–006–AD. 

Comments Due Date 

(a) We must receive comments by January 

18, 2011. 

Affected ADs 

(b) AD 92–27–13, Amendment 39–8448, 

affects this AD. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 747–400 and -400D series 

airplanes, certificated in any category; as 

specified in Boeing Alert Service Bulletin 

747–29A2114, Revision 1, dated July 15, 

2010. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 29: Hydraulic power. 

Unsafe Condition 

(e) This AD results from a report of a fuel 

leak from the drain line of the number two 

engine pylon. The Federal Aviation 

Administration is issuing this AD to detect 

and correct chafing of the main fuel feed tube 

and the alternating current motor-driven 

hydraulic pump wire bundle, which could 

lead to arcing from the exposed wire to the 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 230 / Wednesday, December 1, 2010 / Proposed Rules 74665 

fuel feed tube, and could result in a fire or 

explosion. 

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. 

Inspection 

(g) Within 24 months after the effective 

date of this AD, do a general visual 

inspection to determine the routing of the 

wire bundles in the number two and number 

three engine pylons near the leading edge; 

and do all applicable related investigative 

and corrective actions; in accordance with 

the Accomplishment Instructions of Boeing 

Service Bulletin 747–29A2114, Revision 1, 

dated July 15, 2010. Do all applicable related 

investigative and corrective actions before 

further flight. 

Concurrent Requirements 

(h) For Model 747–400 series airplanes: 

Before or concurrently with accomplishing 

the requirements of paragraph (g) of this AD, 

install all applicable cable support brackets 

in the number two and number three engine 

pylon areas, and do all applicable related 

investigative and corrective actions, in 

accordance with Phase II of Boeing Service 

Bulletin 747–24A2168, Revision 3, dated July 

29, 1993. Do all applicable related 

investigative and corrective actions before 

further flight. Doing the actions required by 

paragraph (c) of AD 92–27–13, Amendment 

39–8488, is an acceptable method of 

compliance with the installation required by 

this paragraph. 

Note 1: For the purposes of this AD, a 

detailed inspection is: ‘‘An intensive 

examination of a specific item, installation, 

or assembly to detect damage, failure, or 

irregularity. Available lighting is normally 

supplemented with a direct source of good 

lighting at an intensity deemed appropriate. 

Inspection aids such as mirror, magnifying 

lenses, etc., may be necessary. Surface 

cleaning and elaborate procedures may be 

required.’’ 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(i) Actions accomplished before the 

effective date of this AD, in accordance with 

the Accomplishment Instructions of Boeing 

Alert Service Bulletin 747–29A2114, dated 

October 1, 2009, are considered acceptable 

for compliance with the corresponding 

actions specified in paragraph (g) of this AD. 

(j) Actions accomplished before the 

effective date of this AD, in accordance with 

the Accomplishment Instructions of Boeing 

Alert Service Bulletin 747–24A2168, 

Revision 1, dated December 5, 1991; or 

Revision 2, dated September 24, 1992; are 

considered acceptable for compliance with 

the corresponding actions specified in 

paragraph (h) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(k)(1) The Manager, Seattle 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: Tung 

Tran, Aerospace Engineer, Propulsion 

Branch, ANM–140S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356, telephone 

(425) 917–6505; fax (425) 917–6590. 

Information may be e-mailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov. 

(2) To request a different method of 

compliance or a different compliance time 

for this AD, follow the procedures in 14 CFR 

39.19. 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. 

Issued in Renton, Washington, on 

November 15, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–30134 Filed 11–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1162; Directorate 

Identifier 2010–NM–099–AD] 

RIN 2120–AA64 

Airworthiness Directives; Airbus Model 

A310 Airplanes, and Airbus Model 

A300 B4–600, B4–600R, and F4–600R 

Series Airplanes, and Model C4–605R 

Variant F Airplanes (Collectively Called 

A300–600 Series Airplanes) 

AGENCY: Federal Aviation 

Administration, DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for the 

products listed above that would 

supersede an existing AD. 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: 

Prompted by a reported in-service event, 

EASA issued AD 2009–0084 to prevent 

unwanted movement of pilot- or co-pilot seat 

in the horizontal direction which is 

considered as potentially unsafe, especially 

during the takeoff phase when the speed of 

the aeroplane is greater than 100 knots and 

until landing gear retraction. 

* * * * * 

Uncommanded movement of the pilot 

and co-pilot seats during takeoff or 

landing could interfere with the 

operation of the airplane and, as a 

result, could cause loss of control of the 

airplane. 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 January 18, 2011. 

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 SAS— 

EAW (Airworthiness Office), 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. 

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: Dan 

Rodina, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–2125; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 


jlentini on DSKJ8SOYB1PROD with PROPOSALS