40832 Federal Register / Vol. 77, No. 133 / Wednesday, July 11, 2012 / Proposed Rules 

(2) If the functional ground test of the RAT, 

as required by paragraph (g)(1) of this AD, is 

not successful (as defined by the 

Accomplishment Instructions of the 

applicable service bulletin specified in 

paragraph (g)(1)(i) or (g)(1)(ii) of this AD): 

Before further flight, replace the RAT pump 

or the RAT assembly with a serviceable part, 

in accordance with the Accomplishment 

Instructions of the applicable service bulletin 

specified in paragraph (g)(1)(i) or (g)(1)(ii) of 

this AD. 

(3) Any airplane equipped with a RAT 

hydraulic pump marked with an ‘‘X’’ or a 

date (month/year) in the amendment cell C 

of the identification plate, which has been 

successfully tested (as defined by the 

Accomplishment Instructions of the 

applicable service bulletin specified in 

paragraph (g)(1)(i) or (g)(1)(ii) of this AD) in 

accordance with the Accomplishment 

Instructions of the applicable service bulletin 

specified in paragraph (g)(1)(i) or (g)(1)(ii) of 

this AD prior to the effective date of this AD, 

is considered compliant with the 

requirements of paragraphs (g)(1) and (g)(2) 

of this AD. 

(h) Parts Installation 

As of the effective date of this AD, no 

person may install any RAT hydraulic pump 

or RAT assembly unless it has been 

inspected, corrected, and successfully tested 

(as defined by the Accomplishment 

Instructions of the applicable service bulletin 

specified in paragraph (g)(1)(i) or (g)(1)(ii) of 

this AD) in accordance with the requirements 

of paragraph (g) of this AD, on any airplane. 

(i) Definition 

A serviceable part is a RAT hydraulic 

pump or RAT assembly that has been 

inspected, corrected, and successfully tested 

(as defined by the Accomplishment 

Instructions of the applicable service bulletin 

specified in paragraph (g)(1)(i) or (g)(1)(ii) of 

this AD), in accordance with the 

Accomplishment Instructions of the 

applicable service bulletin specified in 

paragraph (g)(1)(i) or (g)(1)(ii) of this AD. 

(j) Other FAA AD Provisions 

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. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the International Branch, send it to ATTN: 

Vladimir Ulyanov, Aerospace Engineer, 

International Branch, ANM–116, Transport 

Airplane Directorate, FAA 1601 Lind Avenue 

SW., Renton, Washington 98057–3356; 

telephone (425) 227–1138; fax (425) 227– 

1149. Information may be emailed to: 

9-ANM-116-AMOC-REQUESTS@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the local flight standards district office/ 

certificate holding 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 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. 

(k) Related Information 

(1) Refer to MCAI European Aviation 

Safety Agency Airworthiness Directive 

2011–0197, dated October 10, 2011, and 

the service bulletins specified in paragraphs 

(k)(1)(i) and (k)(1)(ii) of this AD, for related 

information. 

(i) Airbus Mandatory Service Bulletin 

A330–29–3117, dated July 19, 2011. 

(ii) Airbus Mandatory Service Bulletin 

A340–29–4090, dated July 19, 2011. 

(2) For service information identified in 

this AD, contact Airbus SAS—Airworthiness 

Office—EAL, 1 Rond Point Maurice Bellonte, 

31707 Blagnac Cedex, France; telephone +33 

5 61 93 36 96; fax +33 5 61 93 45 80; email 

airworthiness.A330-A340@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, 

WA. For information on the availability of 

this material at the FAA, call 425–227–1221. 

Issued in Renton, Washington, on July 5, 

2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–16966 Filed 7–10–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–0678; Directorate 

Identifier 2011–NM–285–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 747–400, 

and –400F series airplanes. This 

proposed AD was prompted by multiple 

reports of integrated display unit (IDU) 

malfunctions and mode control panel 

(MCP) malfunctions. This proposed AD 

would require installing new software, 

replacing the duct assembly with a new 

duct assembly, making wiring changes, 

and routing certain wire bundles. We 

are proposing this AD to prevent IDU 

malfunctions, which could affect the 

ability of the flight crew to read primary 

displays for airplane attitude, altitude, 

or airspeed, and consequently reduce 

the ability of the flight crew to maintain 

control of the airplane. 

DATES: We must receive comments on 

this proposed AD by August 27, 2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, 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: Deliver to Mail 

address above 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; 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 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: Ana 

Martinez Hueto, Aerospace Engineer, 

Cabin Safety and Environmental 

Systems Branch, ANM–150S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue SW., Renton, 

WA 98057–3356; phone: 425–917–6592; 

fax: 425–917–6591; email: 

ana.m.hueto@faa.gov. 

SUPPLEMENTARY INFORMATION: 


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Federal Register / Vol. 77, No. 133 / Wednesday, July 11, 2012 / Proposed Rules 40833 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposal. Send your comments to 

an address listed under the ADDRESSES

section. Include ‘‘Docket No. FAA– 

2012–0678; Directorate Identifier 2011– 

NM–285–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 have received reports of IDU 

malfunctions and MCP malfunctions on 

Model 747–400, and –400F series 

airplanes. The reports range from a 

single display malfunction to all six 

primary IDUs going blank with an MCP 

malfunction, during various flight 

phases. Moisture in the flight deck 

cooling supply air could cause the IDU 

to blink, lose focus, or display in 

monochrome and the MCP to go blank. 

This condition, if not corrected, could 

affect the ability of the flight crew to 

read primary displays for airplane 

attitude, altitude, or airspeed, and 

consequently reduce the ability of the 

flight crew to maintain control of the 

airplane. 

Relevant Service Information 

We reviewed Boeing Alert Service 

Bulletin 747–21A2523, Revision 1, 

dated October 3, 2011. This service 

information specifies installing new 

integrated display system (IDS) 

software, replacing the duct assembly 

with a new duct assembly, making 

wiring changes, and routing certain wire 

bundles. 

Boeing Alert Service Bulletin 747– 

21A2523, Revision 1, dated October 3, 

2011, refers to Boeing Service Bulletin 

747–31–2426, dated July 29, 2010 (for 

airplanes with Rolls-Royce engines); 

Boeing Service Bulletin 747–31–2427, 

dated July 29, 2010 (for airplanes with 

General Electric engines); and Boeing 

Service Bulletin 747–31–2428, dated 

July 29, 2010 (for airplanes with Pratt & 

Whitney engines); as additional sources 

of guidance for installing certain IDS 

508 software in each of the six IDUs and 

in each of the three EFIS/EICAS 

interface units (EIUs) 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would require 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

We estimate that this proposed AD 

affects 33 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Replace duct assembly and do wiring 

changes.

41 work-hours × $85 per hour = $3,485 ........ $20,121 $23,606 $778,998 

Software change ............................................. 3 work-hours × $85 per hour = $255 ............. 0 255 8,415 

According to the manufacturer, some 

of the costs of this proposed AD may be 

covered under warranty, thereby 

reducing the cost impact on affected 

individuals. We do not control warranty 

coverage for affected individuals. As a 

result, we have included all costs in our 

cost estimate. 

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), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) 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. 

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 airworthiness 

directive (AD): 


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40834 Federal Register / Vol. 77, No. 133 / Wednesday, July 11, 2012 / Proposed Rules 

The Boeing Company: Docket No. FAA– 

2012–0678; Directorate Identifier 2011– 

NM–285–AD. 

(a) Comments Due Date 

We must receive comments by August 27, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–400 and –400F series airplanes; 

certificated in any category; as identified in 

Boeing Alert Service Bulletin 747–21A2523, 

Revision 1, dated October 3, 2011. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 21, Air Conditioning. 

(e) Unsafe Condition 

This AD was prompted by multiple reports 

of integrated display unit (IDU) malfunctions 

and mode control panel (MCP) malfunctions. 

We are issuing this AD to prevent integrated 

display unit (IDU) malfunctions, which could 

affect the ability of the flight crew to read 

primary displays for airplane attitude, 

altitude, or airspeed, and consequently 

reduce the ability of the flight crew to 

maintain control of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Software Update 

Within 12 months after the effective date 

of this AD: Install integrated display system 

software, in accordance with the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 747–21A2523, Revision 1, 

dated October 3, 2011. 

Note 1 to paragraph (g) of this AD: Boeing 

Alert Service Bulletin 747–21A2523, 

Revision 1, dated October 3, 2011, refers to 

Boeing Service Bulletin 747–31–2426, dated 

July 29, 2010 (for airplanes with Rolls-Royce 

engines); Boeing Service Bulletin 747–31– 

2427, dated July 29, 2010 (for airplanes with 

General Electric engines); and Boeing Service 

Bulletin 747–31–2428, dated July 29, 2010 

(for airplanes with Pratt & Whitney engines); 

as additional sources of guidance for the 

software installation specified by paragraph 

(g) of this AD. 

(h) Replacement of Duct Assembly and 

Wiring Changes 

Within 60 months after the effective date 

of this AD: Replace the duct assembly with 

a new duct assembly, do wiring changes, and 

route certain wire bundles, in accordance 

with the Accomplishment Instructions of 

Boeing Alert Service Bulletin 747–21A2523, 

Revision 1, dated October 3, 2011. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle Aircraft 

Certification Office, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

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

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(j) Related Information 

(1) For more information about this AD, 

Ana Martinez Hueto, Aerospace Engineer, 

Cabin Safety and Environmental Systems 

Branch, ANM–150S, FAA, Seattle Aircraft 

Certification Office (ACO), 1601 Lind Avenue 

SW., Renton, WA 98057–3356; phone: 425– 

917–6592; fax: 425–917–6591; email: 

ana.m.hueto@faa.gov. 

(2) For service information identified in 

this 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; 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. 

Issued in Renton, Washington, on June 29, 

2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–16962 Filed 7–10–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2011–1213; Airspace 

Docket No. 11–ANM–23] 

Proposed Amendment of Class E 

Airspace; Dillon, MT 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (SNPRM). 

SUMMARY: The FAA is issuing a SNPRM 

for the notice of proposed rulemaking 

(NPRM) published on March 15, 2012, 

in order to elicit comments addressing 

the proposed amendment to create Class 

E surface airspace and further expand 

the previous proposed amendment of 

Class E airspace extending upward from 

700 feet above the surface at Dillon 

Airport, Dillon, MT, to accommodate 

aircraft using new Area Navigation 

(RNAV) Global Positioning System 

(GPS) standard instrument approach 

procedures. The original NPRM only 

proposed an amendment of Class E 

airspace extending upward from 700 

feet above the surface. 

DATES: Comments must be received on 

or before August 27, 2012. 

ADDRESSES: Send comments on this 

proposal to the U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC, 20590; telephone (202) 

366–9826. You must identify FAA 

Docket No. FAA–2011–1213; Airspace 

Docket No. 11–ANM–23, at the 

beginning of your comments. You may 

also submit comments through the 

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

FOR FURTHER INFORMATION CONTACT: 

Eldon Taylor, Federal Aviation 

Administration, Operations Support 

Group, Western Service Center, 1601 

Lind Avenue SW., Renton, WA 98057; 

telephone (425) 203–4537. 

SUPPLEMENTARY INFORMATION: 

History 

On March 15, 2012, the FAA 

published a NPRM to modify Class E 

airspace, extending upward from 700 

feet or more above the surface, at Dillon 

Airport, Dillon, MT (77 FR 15295). The 

comment period closed April 30, 2012. 

One comment was received. 

The commenter recommended 

establishing Class E surface airspace, 

and also expand the Class E airspace 

extending upward from 700 feet above 

the surface for aircraft safety. The FAA 

found merit in this comment, and, 

therefore, proposes the additional 

creation of Class E surface airspace, and 

modification of existing Class E airspace 

extending upward from 700 feet above 

the surface. The FAA seeks comments 

on this SNPRM. 

Comments Invited 

Interested parties are invited to 

participate in this proposed rulemaking 

by submitting such written data, views, 

or arguments, as they may desire. 

Comments that provide the factual basis 

supporting the views and suggestions 

presented are particularly helpful in 

developing reasoned regulatory 

decisions on the proposal. Comments 

are specifically invited on the overall 

regulatory, aeronautical, economic, 

environmental, and energy-related 

aspects of the proposal. 

Communications should identify both 

docket numbers (FAA Docket No. FAA 

2011–1213 and Airspace Docket No. 11– 

ANM–23) and be submitted in triplicate 

to the Docket Management System (see 


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