Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 41931 

FOR FURTHER INFORMATION CONTACT

section of this document, and marked as 

proprietary or confidential. If submitting 

information on a disk or CD–ROM, mark 

the outside of the disk or CD ROM, and 

identify electronically within the disk or 

CD–ROM the specific information that 

is proprietary or confidential. 

Under 14 CFR 11.35(b), if the FAA is 

aware of proprietary information filed 

with a comment, the agency does not 

place it in the docket. It is held in a 

separate file to which the public does 

not have access, and the FAA places a 

note in the docket that it has received 

it. If the FAA receives a request to 

examine or copy this information, it 

treats it as any other request under the 

Freedom of Information Act (5 U.S.C. 

552). The FAA processes such a request 

under Department of Transportation 

procedures found in 49 CFR part 7. 

Issued in Washington, DC, on July 6, 2012. 

Wendell L. Griffin, 

Deputy Director, Office of Accident 

Investigation and Prevention. 

[FR Doc. 2012–17368 Filed 7–16–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0032; Directorate 

Identifier 2010–NM–236–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (NPRM); 

reopening of comment period. 

SUMMARY: We are revising an earlier 

proposed airworthiness directive (AD) 

for certain The Boeing Company Model 

737–600, –700, –700C, –800, and –900 

series airplanes. That NPRM proposed 

to require inspecting the orientation of 

both sides of the coil cord connector 

keyways of the number 2 windows on 

the flight deck; re-clocking the 

connector keyways to 12 o’clock, if 

necessary; and replacing the coil cord 

assemblies on both number 2 windows 

on the flight deck. That NPRM was 

prompted by reports of arcing and 

smoke at the left number 2 window in 

the flight deck. This action revises that 

NPRM by changing the keyway position 

of certain receptacle connectors and 

adding airplanes to the applicability. 

We are proposing this supplemental 

NPRM (SNPRM) to prevent arcing, 

smoke, and fire in the flight deck, which 

could lead to injuries to or 

incapacitation of the flightcrew. Since 

these actions impose an additional 

burden over that proposed in the NPRM, 

we are reopening the comment period to 

allow the public the chance to comment 

on these proposed changes. 

DATES: We must receive comments on 

this supplemental NPRM by August 31, 

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: 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, WA 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, WA. 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: 

Louis Natsiopoulos, Aerospace 

Engineer, Systems and Equipment 

Branch, ANM–130S, FAA, Seattle 

Aircraft Certification Office (ACO), 1601 

Lind Avenue SW., Renton, WA 98057– 

3356; phone: 425–917–6478; fax: 425– 

917–6590; email: 

Elias.Natsiopoulos@faa.gov. 

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–2011–0032; Directorate Identifier 

2010–NM–236–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 issued an NPRM to amend 14 CFR 

part 39 to include an AD that would 

apply to The Boeing Company Model 

737–600, –700, –700C, –800, and –900 

series airplanes, as identified in Boeing 

Special Attention Service Bulletin 737– 

30–1058, Revision 3, dated July 7, 2010. 

That NPRM published in the Federal 

Register on January 26, 2011 (76 FR 

4567). That NPRM proposed to require 

inspecting the orientation of both sides 

of the coil cord connector keyways of 

the number 2 windows on the flight 

deck; re-clocking the connector keyways 

to 12 o’clock, if necessary; and replacing 

the coil cord assemblies on both number 

2 windows on the flight deck. 

Actions Since Previous NPRM (76 FR 

4567, January 26, 2011) Was Issued 

Since we issued the previous NPRM 

(76 FR 4567, January 26, 2011), we have 

received three reports by operators of 

wire connectors at the two ends of the 

coil cord rubbing each other. These 

operators had accomplished the actions 

described in Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 

3, dated July 7, 2010 (or earlier 

revisions), which was referred to in the 

previous NPRM as the appropriate 

source of service information. The rub 

condition occurs when the window 

opens or is in the fully open position. 

The rub condition can possibly cause 

damage to the wire connector and the 

coil cord and cause arcing, smoke, and 

fire in the flight deck, which could lead 

to injuries to or incapacitation of the 

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41932 Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 

flightcrew. As a result of these findings, 

Boeing has issued Special Attention 

Service Bulletin 737–30–1058, Revision 

4, dated November 3, 2011, to correct 

the rubbing condition. The SNPRM will 

specify Special Attention Service 

Bulletin 737–30–1058, Revision 4, dated 

November 3, 2011 as the appropriate 

source of service information for 

accomplishing the proposed actions. 

This SNPRM also adds airplanes to 

the applicability, which includes Model 

737–900ER airplanes and airplanes that 

have accomplished the actions of 

Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated 

July 7, 2010, in production. 

Comments 

We gave the public the opportunity to 

comment on the previous NPRM (76 FR 

4567, January 26, 2011). The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Support for Previous NPRM (76 FR 

4567, January 26, 2011) 

American Airlines (American) and 

Delta Airlines (Delta) stated they have 

no objections to the previous NPRM (76 

FR 4567, January 26, 2011). 

Request To Use Revised Clocking 

Positions 

Boeing requested that clocking of the 

connectors for the left window be 

changed to the 9 o’clock position, and 

the 3 o’clock position for the right 

window. Boeing stated that this will 

provide better separation between the 

two ends of the coiled cord when the 

windows are in the open position. 

Boeing stated that Special Attention 

Service Bulletin 737–30–1058, Revision 

3, dated July 7, 2010, will be revised to 

reflect this change. 

We agree. The proposed change 

prevents coil cord damage resulting 

from the close proximity of the two ends 

of the cord when the windows are in the 

open position. Without this change, the 

unsafe condition that originally 

prompted the previous NPRM (76 FR 

4567, January 26, 2011) would not be 

corrected. We have changed the SNPRM 

to reference the actions specified in 

Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 4, dated 

November 3, 2011. 

Request To Revise Certain Service 

Information 

American stated that Paragraph 1.K.1. 

of Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated 

July 7, 2010, states that the only affected 

publication is the Boeing Model 737 

illustrated parts catalog (IPC). But 

American pointed out that the wiring 

diagram manual (WDM) also needs to be 

revised, because Figures 2 and 7 of 

Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated 

July 7, 2010, show the new wiring 

diagram after the installation of the new 

coil cord assembly. 

We agree that the WDM is affected by 

wiring changes shown in Figures 2 and 

7 of Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated 

July 7, 2010. As previously described, 

we have updated this supplemental 

NPRM to refer to Boeing Special 

Attention Service Bulletin 737–30– 

1058, Revision 4, dated November 3, 

2011. Paragraph 1.K.1. of that service 

bulletin does include the WDM as an 

affected reference. 

Request To Revise Service Information 

Reference 

American stated that, in Figures 4 and 

9 of Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated 

July 7, 2010, Section 20–10–11 of the 

standard wiring practices manual 

(SWPM) is referenced as an accepted 

procedure for adjusting the connector 

keyway if it needs to be re-clocked. 

American pointed out that this SWPM 

section does mention connectors, but 

does not reference clocking of keyways. 

Therefore, the more appropriate 

reference would be Section 20–60–06 of 

the SWPM, which covers the 

installation of electrical connectors. 

We agree that Section 20–10–11 of the 

SWPM does not provide instructions for 

setting the keyway or re-clocking the 

connectors. Those instructions are 

included in Section 20–60–06 of the 

SWPM. However, re-clocking or 

resetting the connector keyway is a 

misnomer of the intended action. 

According to Boeing, the intended 

action in Figures 4 and 9 of Boeing 

Special Attention Service Bulletin 737– 

30–1058, Revision 3, dated July 7, 2010, 

is the repositioning of the connector, not 

re-clocking or resetting the connector 

keyway. Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 

4, dated November 3, 2011, deletes the 

wording ‘‘re-clocking or resetting the 

connector keyway,’’ and replaces it with 

text more clearly describing the 

intended action. As explained 

previously, we have changed the 

SNPRM to reference Boeing Special 

Attention Service Bulletin 737–30– 

1058, Revision 4, dated November 3, 

2011. 

FAA’s Determination 

We are proposing this SNPRM 

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. Certain changes 

described above expand the scope of the 

previous NPRM (76 FR 4567, January 

26, 2011). As a result, we have 

determined that it is necessary to reopen 

the comment period to provide 

additional opportunity for the public to 

comment on this SNPRM. 

Costs of Compliance 

We estimate that this proposed AD 

will affect 712 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 

Number of 

airplanes 

Cost on U.S. 

operators 

Keyway inspection and installation of new cord 

assemblies on both sides of the flight deck 

(Group 1, Configuration 1 airplanes).

6 work-hours × $85 per 

hour = $510.

$1,608 $2,118 712 $1,508,016 

Adjustment of receptacles on both sides of the 

flight deck (Group 1, Configuration 1, and 

Group 2 airplanes).

4 work-hours × $85 per 

hour = $340.

0 340 404 137,360 

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 

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Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 41933 

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): 

The Boeing Company: Docket No. FAA– 

2011–0032; Directorate Identifier 2010– 

NM–236–AD. 

(a) Comments Due Date 

We must receive comments by August 31, 

2012. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–600, –700, –700C, –800, –900, 

and –900ER series airplanes, certificated in 

any category, as identified in Boeing Special 

Attention Service Bulletin 737–30–1058, 

Revision 4, dated November 3, 2011. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 30, Ice and Rain Protection. 

(e) Unsafe Condition 

This AD was prompted by reports of arcing 

and smoke at the left number 2 window in 

the flight deck. We are issuing this AD to 

prevent arcing, smoke, and fire in the flight 

deck, which could lead to injuries to or 

incapacitation of the flightcrew. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Inspection and Replacement for Group 1, 

Configuration 1 Airplanes 

For Group 1, Configuration 1 airplanes, as 

identified in Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 4, 

dated November 3, 2011: Within 48 months 

after the effective date of this AD, do the 

actions in paragraphs (g)(1) and (g)(2) of this 

AD. 

(1) Do a general visual inspection of the 

orientation of the coil cord connector 

keyways on the captain’s and first officer’s 

sides of the flight compartment, in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 4, 

dated November 3, 2011. If the orientation is 

not at the specified position, before further 

flight, turn the receptacle connector to the 

correct position, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 737–30– 

1058, Revision 4, dated November 3, 2011. 

(2) Replace the coil cords with new coil 

cords on both sides of the flight deck, in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 4, 

dated November 3, 2011. 

(h) Inspection and Replacement for Group 1, 

Configuration 2, and Group 2 Airplanes 

For Group 1, Configuration 2, and Group 

2 airplanes, as identified in Boeing Special 

Attention Service Bulletin 737–30–1058, 

Revision 4, dated November 3, 2011: Within 

48 months after the effective date of this AD, 

install the receptacle connector with changed 

keyway position on both sides of the flight 

deck, in accordance with the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 737–30– 

1058, Revision 4, dated November 3, 2011. 

(i) Credit for Previous Actions 

This paragraph provides credit for the 

replacement required by paragraph (g)(2) of 

this AD, if the replacement was performed 

before the effective date of this AD using the 

service information specified in paragraph 

(i)(1), (i)(2), (i)(3), or (i)(4) of this AD, 

provided that the actions required by 

paragraph (h) of this AD are done in 

accordance with Boeing Special Attention 

Service Bulletin 737–30–1058, Revision 4, 

dated November 3, 2011, for Group 1, 

Configuration 2, and Group 2 airplanes. 

(1) Boeing Service Bulletin 737–30–1058, 

dated July 27, 2006, which is not 

incorporated by reference. 

(2) Boeing Service Bulletin 737–30–1058, 

Revision 1, dated June 18, 2007, which is not 

incorporated by reference. 

(3) Boeing Service Bulletin 737–30–1058, 

Revision 2, dated February 13, 2009, which 

is not incorporated by reference. 

(4) Boeing Special Attention Service 

Bulletin 737–30–1058, Revision 3, dated July 

7, 2010, which is not incorporated by 

reference. 

(j) 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. 

(k) Related Information 

(1) For more information about this AD, 

contact Louis Natsiopoulos, Aerospace 

Engineer, Systems and Equipment Branch, 

ANM–130S, FAA, Seattle Aircraft 

Certification Office (ACO), 1601 Lind Avenue 

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

917–6478; fax: 425–917–6590; email: 

Elias.Natsiopoulos@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, WA 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, 

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41934 Federal Register / Vol. 77, No. 137 / Tuesday, July 17, 2012 / Proposed Rules 

WA. For information on the availability of 

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

Issued in Renton, Washington, on July 6, 

2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–17391 Filed 7–16–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0619; Directorate 

Identifier 2007–NM–356–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Supplemental notice of 

proposed rulemaking (NPRM); 

reopening of comment period. 

SUMMARY: We are revising an earlier 

proposed airworthiness directive (AD) 

for all The Boeing Company Model 747– 

100, 747–100B, 747–100B SUD, 747– 

200B, 747–200C, 747–200F, 747–300, 

747SR, and 747SP series airplanes. That 

NPRM proposed to require performing 

repetitive operational tests of the engine 

fuel suction feed of the fuel system, and 

other related testing if necessary. That 

NPRM was prompted by reports of two 

in-service occurrences on Model 737– 

400 airplanes of total loss of boost pump 

pressure of the fuel feed system, 

followed by loss of fuel system suction 

feed capability on one engine, and inflight shutdown of the engine. This 

action revises that NPRM by proposing 

to require repetitive operational tests, 

and corrective actions if necessary. We 

are proposing this supplemental NPRM 

to detect and correct loss of the engine 

fuel suction feed capability of the fuel 

system, which in the event of total loss 

of the fuel boost pumps could result in 

dual engine flameout, inability to restart 

the engines, and consequent forced 

landing of the airplane. Since these 

actions impose an additional burden 

over that proposed in the previous 

NPRM, we are reopening the comment 

period to allow the public the chance to 

comment on these proposed changes. 

DATES: We must receive comments on 

this supplemental NPRM by August 31, 

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: 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, WA 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: Sue 

Lucier, Aerospace Engineer, Propulsion 

Branch, ANM–140S, 1601 Lind Avenue 

SW., Renton, Washington 98057–3356; 

phone: 425–917–6438; fax: 425–917– 

6590; email: suzanne.lucier@faa.gov. 

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–2008–0619; Directorate Identifier 

2007–NM–356–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 issued an NPRM to amend 14 CFR 

part 39 to include an AD that would 

apply to all The Boeing Company Model 

747–100, 747–100B, 747–100B SUD, 

747–200B, 747–200C, 747–200F, 747– 

300, 747SR, and 747SP series airplanes. 

That NPRM published in the Federal 

Register on June 6, 2008 (73 FR 32245). 

That NPRM proposed to require 

performing repetitive operational tests 

of the engine fuel suction feed of the 

fuel system, and other related testing if 

necessary. 

Actions Since Previous NPRM (73 FR 

32245, June 6, 2008) Was Issued 

Since we issued the previous NPRM 

(73 FR 32245, June 6, 2008), we have 

received comments from operators 

indicating a high level of difficulty 

performing the actions in the previous 

NPRM during maintenance operations. 

Relevant Service Information 

We reviewed Boeing Alert Service 

Bulletin 747–28A2331, dated April 2, 

2012. This service information describes 

procedures for repetitive operational 

tests of the engine fuel suction feed of 

the fuel system, and corrective actions 

if necessary. The corrective actions 

include isolating the cause of any 

leakage and repairing the leak. 

Comments 

We gave the public the opportunity to 

comment on the previous NPRM (73 FR 

32245, June 6, 2008). The following 

presents the comments received on the 

previous NPRM and the FAA’s response 

to each comment. 

Requests To Clarify the Reason for the 

Unsafe Condition/Define Risk 

Assessment 

Boeing and Northwest Airlines 

(NWA) asked that we clarify the reason 

for the unsafe condition identified in 

the previous NPRM (73 FR 32245, June 

6, 2008) by including all relevant 

information. 

Boeing stated that the description of 

a report of in-service occurrences of loss 

of fuel system suction feed capability 

results from reports of two in-service 

engine flameout events while operating 

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