Federal Register / Vol. 75, No. 190 / Friday, October 1, 2010 / Proposed Rules 60661 

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 Groves, 

Aerospace Engineer, International Branch, 

ANM–116, Transport Airplane Directorate, 

FAA, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone (425) 

227–1503; 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 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 

(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 

(k) Refer to MCAI European Aviation 

Safety Agency (EASA) Airworthiness 

Directive 2009–0266, dated December 17, 

2009; and 328 Support Services Service 

Bulletins SB–328–27–488 and SB–328J–27– 

237, both dated August 25, 2009; for related 

information. 

Issued in Renton, Washington, on 

September 23, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–24716 Filed 9–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–1098; Directorate 

Identifier 2008–NM–108–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 747–100, 747–100B, 

747–100B SUD, 747–200B, 747–200C, 

747–200F, 747–300, 747SR, and 747SP 

Series 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 Model 747–100, 747–100B, 

747–100B SUD, 747–200B, 747–200C, 

747–200F, 747–300, 747SR, and 747SP 

series airplanes. The original NPRM 

would have required adding two new 

indicator lights on the P10 panel to 

inform the captain and first officer of a 

low pressure condition in the left and 

right override/jettison pumps of the 

center wing tanks. The original NPRM 

would also have required replacing the 

left and right override/jettison switches 

on the M154 fuel control module on the 

P4 panel with improved switches and 

doing the associated wiring changes. 

The original NPRM would have also 

required a revision to the maintenance 

program to incorporate airworthiness 

limitation No. 28–AWL–22. The original 

NPRM resulted from fuel system 

reviews conducted by the manufacturer. 

This action revises the original NPRM 

by adding a revision to the airplane 

flight manual to advise the flightcrew 

what to do in the event that the pump 

low pressure light on the flight 

engineer’s panel does not illuminate 

when the pump is selected off; and 

requiring, for certain airplanes, 

installation of a mounting bracket for 

the new indicator lights. We are 

proposing this supplemental NPRM to 

prevent uncommanded operation of the 

override/jettison pumps of the center 

wing tanks, and failure to manually shut 

off the override/jettison pumps at the 

correct time, either of which could lead 

to an ignition source inside the center 

wing tank. This condition, in 

combination with flammable fuel 

vapors, could result in a center fuel tank 

explosion and consequent loss of the 

airplane. 

DATES: We must receive comments on 

this supplemental NPRM by October 26, 

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 

W12–140, 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: 

Douglas Bryant, 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–2008–1098; Directorate Identifier 

2008–NM–108–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. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
60662 Federal Register / Vol. 75, No. 190 / Friday, October 1, 2010 / Proposed Rules 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) (the ‘‘original 

NPRM’’) to amend 14 CFR part 39 to 

include an airworthiness directive (AD) 

that would apply to certain Model 747– 

100, 747–100B, 747–100B SUD, 747– 

200B, 747–200C, 747–200F, 747–300, 

747SR, and 747SP series airplanes. That 

original NPRM was published in the 

Federal Register on October 16, 2008 

(73 FR 61369). That original NPRM 

proposed to require adding two new 

indicator lights on the P10 panel to 

inform the captain and first officer of a 

low pressure condition in the left and 

right override/jettison pumps of the 

center wing tanks. The original NPRM 

also proposed to require replacing the 

left and right override/jettison switches 

on the M154 fuel control module on the 

P4 panel with improved switches and 

doing the associated wiring changes. 

The original NPRM also proposed to 

require a revision to the maintenance 

program to incorporate airworthiness 

limitation No. 28–AWL–22. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

considered the comments received from 

the two commenters. 

Request To Revise the Airplane Flight 

Manual (AFM) 

Boeing requests that the original 

NPRM be revised to add a requirement 

to revise Section 3, ‘‘Normal 

Procedures,’’ of the AFM to require 

actions by the flight engineer in the 

event that the pump low pressure light 

on the flight engineer’s panel does not 

illuminate when the pump is selected 

off. 

We agree that this supplemental 

NPRM should be revised to require 

including this information in the AFM. 

However, we disagree with the specific 

wording and AFM section proposed by 

Boeing. In evaluating Boeing’s request, 

we found that there are two causes for 

an override/jettison pump to run dry. 

The actions proposed by the original 

NPRM were intended to prevent an 

uncommanded-on event that could 

result in the override/jettison pump 

running dry, which could lead to an 

ignition source in the center wing fuel 

tank. We found that the original 

proposed actions would address events 

where the pumps run dry for extended 

periods of time as might happen when 

the flight engineer does not shut off the 

pump at the appropriate time. 

However, since the cause of the 

uncommanded-on event still exists, we 

find that the AFM must be revised to 

provide instructions to the flightcrew in 

the event of a relay failure which leaves 

the fuel pump powered on after the 

pump has been switched off 

(uncommanded-on). We have 

determined that more precise wording 

must be used in the supplemental 

NPRM and that the wording should be 

added to Section 1, ‘‘Certificate 

Limitations,’’ of the AFM. 

Therefore, we have added a new 

paragraph (i) to this supplemental 

NPRM and re-identified subsequent 

paragraphs. We have also revised the 

Costs of Compliance section of this 

supplemental NPRM to include the 

estimated costs for this new action. In 

addition, we revised the unsafe 

condition statement to include the 

additional cause. 

Request To Reference Later Revision of 

Service Bulletin Cited in Original 

NPRM 

Northwest Airlines (NWA) requests 

that we reference updated service 

information (i.e., Boeing Service 

Bulletin 747–28A2288, Revision 1, 

dated January 21, 2010), instead of 

Boeing Alert Service Bulletin 747– 

28A2288, dated March 20, 2008, which 

was referenced in the original NPRM as 

the appropriate source of service 

information for doing the required 

actions. NWA notes that steps 

3.B.46.b.(1) through 3.B.46.b.(11) of 

Boeing Alert Service Bulletin 747– 

28A2288, dated March 20, 2008, do not 

state when the two new installed LOW 

PRESS lights on the P10 panel come on. 

NWA explains that if the LOW PRESS 

lights on the P10 panel are not wired 

correctly, and those steps are used, the 

lights could be illuminated properly in 

the ‘Test’ mode, but might not 

illuminate in the actual non-‘test’ mode 

with the override/jettison pump switch 

in the ON position. NWA states that 

Boeing responded to this concern and 

stated that the original issue of the alert 

service bulletin would be revised and 

would reference actions that are the 

same as those provided in AWL No. 28– 

AWL–22 for the functional tests. 

Since we published the original 

NPRM, Boeing has published Boeing 

Service Bulletin 747–28A2288, Revision 

1, dated January 21, 2010. We agree to 

reference the updated service bulletin as 

the appropriate source of service 

information for accomplishing the 

installation of indicator lights and 

replacement of switches required by this 

supplemental NPRM. Boeing has 

clarified Steps 3.B.44.b.(1) through 

3.B.44.b.(11) of Boeing Service Bulletin 

747–28A2288, Revision 1, dated January 

21, 2010. 

In addition, Boeing has also included 

installation instructions (which include 

installing a mounting bracket) of the 

LOW PRESS indicator lights for 

airplanes that do not have the warning 

panel (i.e., the P10 panel) installed, and 

revised the airplane groups. 

We have revised paragraphs (c) and 

(g) of this supplemental NPRM to 

reference Boeing Service Bulletin 747– 

28A2288, Revision 1, dated January 21, 

2010. For certain airplanes, we also 

revised paragraph (g) of this 

supplemental NPRM to require adding a 

mounting bracket. 

Request To Revise Summary and 

Discussion Sections of Original NPRM 

Boeing requests that we revise the 

Summary and Discussion sections of the 

original NPRM to add additional detail 

to the description of required actions. 

For the Summary section, Boeing 

suggests that the text be revised to point 

out: 

• The redundancy in functionality 

between the two P4 panel indicator 

lights and the new indicator lights 

added to the P10 panel; 

• The different configurations of the 

P10 panel (which means that for some 

airplanes, a bracket would also be 

installed to provide a mounting surface 

for the new indicator lights); and 

• To explain which flightcrew 

member is responsible for responding to 

indications of a pump uncommandedon event. 

For the Discussion section, Boeing 

also suggests that the text be revised to 

point out the redundancy in 

functionality between the two P4 panel 

indicator lights and the new indicator 

lights added to the P10 panel. Boeing 

suggests that, in addition, the text 

should be revised to provide further 

details on the similarities and 

differences between the indicator lights 

on the P10 and P4 panels; information 

on a switch replacement for the P4 

panel; and further detail on how and 

when the indicator lights turn on and 

off along with a detailed description of 

how a flight engineer should respond to 

the indicator lights. 

We agree that the sections of text need 

to be clarified. The Summary section of 

an AD is intended to provide only a 

brief summary of the AD. Therefore, we 

have not revised the Summary section 

of this supplemental NPRM. Also, while 

the Discussion section is the appropriate 

section for the detailed information that 

Boeing proposes, the Discussion section 

from the original NPRM is not repeated 

in this supplemental NPRM. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 190 / Friday, October 1, 2010 / Proposed Rules 60663 

Request To Revise the Work-Hour 

Estimate 

NWA requests that the work-hour 

estimate to accomplish the original 

NPRM be increased from the 28 workhours estimated in the original NPRM to 

56.75 work-hours. NWA states that 

Boeing Alert Service Bulletin 747– 

28A2288, dated March 20, 2008, does 

not include a work-hour estimate for 

accomplishing access and closeup 

actions provided in BAE Service 

Bulletin 65B46124–28–03, dated March 

28, 2007. NWA points out that the BAE 

service bulletins, referenced in the 

original NPRM (and the following table) 

as additional sources of guidance, 

provide an estimate of 10 work-hours 

for access and closeup actions. 

BAE SYSTEMS SERVICE BULLETINS

BAE Systems Service 

Bulletin— Dated— 

65B46124-28-01 ......... February 16, 2006. 

65B46124-28-02 ......... March 28, 2007. 

65B46124-28-03 ......... March 28, 2007. 

65B46214-28-01 ......... February 16, 2006. 

65B46214-28-02 ......... March 28, 2007. 

65B46214-28-03 ......... March 28, 2007. 

We agree to revise the work-hour 

estimate. However, we do not agree to 

include incidental costs such as access 

and closeup. Boeing Service Bulletin 

747–28A2288, Revision 1, dated January 

21, 2010, provides an estimate of 28 

work-hours to accomplish the proposed 

modification. The BAE service bulletins 

referenced in that Boeing service 

bulletin as additional sources of 

guidance each provide an estimate of 2 

additional work-hours to accomplish 

the modification actions specified in 

Boeing Service Bulletin 747–28A2288, 

Revision 1, dated January 21, 2010. The 

cost analysis in AD rulemaking actions, 

however, typically does not include 

incidental costs such as the time 

required to gain access and closeup, 

time necessary for planning, or time 

necessitated by other administrative 

actions. Those incidental costs, which 

might vary significantly among 

operators, are almost impossible to 

calculate. We cannot provide specific 

information regarding the cost of parts 

from BAE to do the proposed 

modification. The parts costs will likely 

vary depending on the airplane group. 

However, we can reasonably estimate 

that the cost of the parts from BAE will 

be at least between $100 and $200 per 

airplane, depending on airplane group. 

We specifically invite the submission of 

comments and other data regarding the 

costs of this proposed AD. 

We have revised the estimate to 

between 30 and 32 work-hours, 

depending on airplane group. Also, 

Boeing Service Bulletin 747–28A2288, 

Revision 1, dated January 21, 2010, 

revises the parts cost estimate provided 

in the original issue of that service 

bulletin. We have revised the parts costs 

estimate in the Costs of Compliance 

section of this supplemental NPRM 

accordingly. 

Incorrect Numbers 

AWL No. 28–AWL–22 of Section D of 

the Boeing 747–100/200/300/SP 

Airworthiness Limitations (AWLs) and 

Certification Maintenance Requirements 

(CMRs), D6–13747–CMR, Revision 

March 2008, contains an incorrect 

section number. Where the AWL states 

‘‘28–31–00,’’ the correct section number 

is ‘‘28–42–00.’’ Boeing is aware of this 

discrepancy and plans to issue a 

revision. We have included this 

information in paragraph (h) of this AD. 

Boeing Service Bulletin 747– 

28A2288, Revision 1, dated January 21, 

2010, contains an incorrect sub-section 

number and incorrect part numbers. 

Where Boeing Service Bulletin 747– 

28A2288, Revision 1, dated January 21, 

2010, states ‘‘20–60–00,’’ the correct subsection number is ‘‘28–60–06.’’ Where 

Figures 22 through 32 of Boeing Service 

Bulletin 747–28A2288, Revision 1, 

dated January 21, 2010, state certain 

part numbers for a nut, a bolt, and a 

washer (BACN10JC06CD, 

BACS12HN06–10, and NAS1149D0632J 

respectively), the correct part numbers 

are BACN10NW1, BACS12HN04–6 (for 

a screw instead of a bolt), and 

NAS1149DN416J, respectively. Boeing 

is aware of these discrepancies and 

plans to issue a revision. We have 

included this information in paragraph 

(g) of this AD. 

FAA’s Determination and Proposed 

Requirements of the Supplemental 

NPRM 

We are proposing this supplemental 

NPRM 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. Certain changes 

described above expand the scope of the 

original NPRM. 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 supplemental NPRM. 

Costs of Compliance 

We estimate that this proposed AD 

would affect 185 airplanes of U.S. 

registry. The average labor rate per 

work-hour is $85. The following table 

provides the estimated costs for U.S. 

operators to comply with this proposed 

AD. 

ESTIMATED COSTS

Action Work-hours Parts Cost per product 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Boeing Service Bulletin 747– 

28A2288, Revision 1.

Between 30 and 32 .. Between $2,768 and 

$2,868.

Between $5,318 and 

$5,588.

185 Between $983,830 

and $1,033,780. 

AFM revision ............................. 1 ............................... None ......................... $85 185 $15,725 

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 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
60664 Federal Register / Vol. 75, No. 190 / Friday, October 1, 2010 / Proposed Rules 

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– 

2008–1098; Directorate Identifier 2008– 

NM–108–AD. 

Comments Due Date 

(a) We must receive comments by October 

26, 2010. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 747–100, 747–100B, 747– 

100B SUD, 747–200B, 747–200C, 747–200F, 

747–300, 747SR, and 747SP series airplanes, 

certificated in any category; as identified in 

Boeing Service Bulletin 747–28A2288, 

Revision 1, dated January 21, 2010. 

Note 1: This AD requires revisions to 

certain operator maintenance documents to 

include a new inspection. Compliance with 

this inspection is required by 14 CFR 

91.403(c). For airplanes that have been 

previously modified, altered, or repaired in 

the areas addressed by this inspection, the 

operator may not be able to accomplish the 

inspections described in the revisions. In this 

situation, to comply with 14 CFR 91.403(c), 

the operator must request approval for an 

alternative method of compliance (AMOC) 

according to paragraph (1) of this AD. The 

request should include a description of 

changes to the required inspection that will 

ensure the continued operational safety of 

the airplane. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 28: Fuel. 

Unsafe Condition 

(e) This AD results from fuel system 

reviews conducted by the manufacturer. The 

Federal Aviation Administration is issuing 

this AD to prevent uncommanded operation 

of the override/jettison pumps of the center 

wing tanks, and failure to manually shut off 

the override/jettison pumps at the correct 

time, either of which could lead to an 

ignition source inside the center wing tank. 

This condition, in combination with 

flammable fuel vapors, could result in a 

center fuel tank explosion and consequent 

loss of the airplane. 

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. 

Installation of Indicator Lights and 

Replacement of Switches 

(g) Within 36 months after the effective 

date of this AD: Add two new indicator lights 

on the P10 panel to inform the captain and 

first officer of a low pressure condition in the 

left and right override/jettison pumps of the 

center wing tanks; and, for airplanes that do 

not have the warning panel (P10 panel) 

installed, add a mounting bracket; and 

replace the left and right override/jettison 

switches on the M154 fuel control module on 

the P4 panel with improved switches; and do 

the associated wiring changes. Accomplish 

these actions by doing all of the applicable 

actions specified in the Accomplishment 

Instructions of Boeing Service Bulletin 747– 

28A2288, Revision 1, dated January 21, 2010, 

except where that service bulletin states ‘‘20– 

60–00,’’ the correct sub-section number is 

‘‘28–60–06,’’ and as described in Table 1 of 

this AD. 

TABLE 1—PART NUMBER CORRECTION

Part name 

Part number specified in Figures 22 through 32 of Boeing 

Service Bulletin 747–28A2288, Revision 1, dated January 

21, 2010 

Part name of correct part Correct part number 

Nut ......................................... BACN10JC06CD .................................................................. Nut ......................................... BACN10NW1 

Bolt ........................................ BACS12HN06–10 ................................................................. Screw .................................... BACS12HN04–6 

Washer .................................. NAS1149D0632J .................................................................. Washer .................................. NAS1149DN416J 

Note 2: For airplanes equipped with 

certain M154 fuel control modules, 

paragraph 2.C.2 of Boeing Service Bulletin 

747–28A2288, Revision 1, dated January 21, 

2010, refers to the BAE Systems service 

bulletins identified in Table 2 of this AD, as 

applicable, as additional sources of guidance 

for replacing the switches. 

TABLE 2—ADDITIONAL SOURCES OF GUIDANCE

Service bulletin Date 

BAE Systems Service Bulletin 65B46124-28-01 ...................................................................................................................... February 16, 2006. 

BAE Systems Service Bulletin 65B46124-28-02 ...................................................................................................................... March 28, 2007. 

BAE Systems Service Bulletin 65B46124-28-03 ...................................................................................................................... March 28, 2007. 

BAE Systems Service Bulletin 65B46214-28-01 ...................................................................................................................... February 16, 2006. 

BAE Systems Service Bulletin 65B46214-28-02 ...................................................................................................................... March 28, 2007. 

BAE Systems Service Bulletin 65B46214-28-03 ...................................................................................................................... March 28, 2007. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 190 / Friday, October 1, 2010 / Proposed Rules 60665 

Maintenance Program Revision 

(h) Concurrently with accomplishing the 

actions required by paragraph (g) of this AD, 

revise the maintenance program by 

incorporating Airworthiness Limitation 

(AWL) No. 28–AWL–22 of Section D of the 

Boeing 747–100/200/300/SP Airworthiness 

Limitations (AWLs) and Certification 

Maintenance Requirements (CMRs), D6– 

13747–CMR, Revision March 2008. Where 

the AWL states ‘‘28–31–00,’’ the correct 

section number is ‘‘28–42–00.’’ 

Airplane Flight Manual (AFM) Revision 

(i) Concurrently with accomplishing the 

actions required by paragraph (g) of this AD, 

revise Section 1, ‘‘Certificate Limitations,’’ of 

the applicable Boeing 747 AFM to include 

the following statement. This may be done by 

inserting a copy of this AD into the AFM. 

‘‘When the center tank override jettison 

pumps are selected off, the amber pump low 

pressure lights on the Flight Engineer’s panel 

should illuminate and remain on. If a pump 

low pressure light on the Flight Engineer’s 

panel does not illuminate, open the 

associated pump circuit breaker.’’ 

Note 3: When a statement identical to that 

in paragraph (i) of this AD has been included 

in the general revisions of the AFM, the 

general revisions may be inserted into the 

AFM, and the copy of this AD may be 

removed from the AFM. 

No Alternative Inspections or Inspection 

Intervals 

(j) After accomplishing the action specified 

in paragraph (h) of this AD, no alternative 

inspections or inspection intervals may be 

used unless the inspections or inspection 

intervals are approved as an AMOC in 

accordance with the procedures specified in 

paragraph (l) of this AD. 

Terminating Action for Maintenance 

Program Revision 

(k) Incorporating AWL No. 28–AWL–22 

into the maintenance program in accordance 

with paragraph (g) of AD 2008–10–07, 

Amendment 39–15513, or AD 2008–10–07 

R1, Amendment 39–16070, terminates the 

action required by paragraph (h) of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(l)(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: 

Douglas Bryant, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, Seattle 

ACO, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone (425) 

917–6505; fax (425) 917–6590. Information 

may be e-mailed to: 9-ANM-Seattle-ACOAMOC-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 

September 20, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–24717 Filed 9–30–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0953; Directorate 

Identifier 2010–NM–010–AD] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Corporation Model MD–90–30 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for all 

Model MD–90–30 airplanes. This 

proposed AD would require repetitive 

high frequency eddy current inspections 

for cracking on the hinge bearing lugs of 

the left and right sides of the center 

section ribs of the horizontal stabilizer, 

and related investigative and corrective 

actions if necessary. This proposed AD 

results from reports of cracks found on 

either the left or right (or in one case, 

both) sides of the center section ribs of 

the horizontal stabilizer. We are 

proposing this AD to detect and correct 

cracking in the hinge bearing lugs of the 

center section of the left and right ribs, 

which could result in failure of the 

hinge bearing lugs and consequent 

inability of the horizontal stabilizer to 

sustain the required loads. 

DATES: We must receive comments on 

this proposed AD by November 15, 

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 

W12–140, 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, 3855 

Lakewood Boulevard, MC D800–0019, 

Long Beach, California 90846–0001; 

telephone 206–544–5000, extension 2; 

fax 206–766–5683; e-mail 

dse.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: 

Roger Durbin, Aerospace Engineer, 

Airframe Branch, ANM–120L, FAA, Los 

Angeles Aircraft Certification Office 

(ACO), 3960 Paramount Boulevard, 

Lakewood, California 90712–4137; 

telephone (562) 627–5233; 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–2010–0953; Directorate Identifier 

2010–NM–010–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. 


jlentini on DSKJ8SOYB1PROD with PROPOSALS