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

81508 

Vol. 75, No. 248 

Tuesday, December 28, 2010 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1205; Directorate 

Identifier 2010–NM–146–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 777–200, –200LR, 

–300, and –300ER Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for certain 

Model 777–200, –200LR, –300, and 

–300ER series airplanes. This proposed 

AD would require, for certain airplanes, 

replacing certain boost pump relays 

with ground fault interrupter (GFI) 

relays. For certain other airplanes, this 

proposed AD would require installing 

new panels in the main equipment 

center, making certain wiring changes, 

installing new GFI relays in the new 

panels, and installing new electrical 

load management system (ELMS) 

software. For certain other airplanes, 

this proposed AD would require doing 

certain bond resistance measurements, 

and corrective actions if necessary. This 

proposed AD results from fuel system 

reviews conducted by the manufacturer. 

We are proposing this AD to prevent the 

potential of ignition sources inside fuel 

tanks, which, in combination with 

flammable fuel vapors, could result in a 

fuel tank explosion and consequent loss 

of the airplane. 

DATES: We must receive comments on 

this proposed AD by February 11, 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 Boeing 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. 

For Smiths and GE Aviation service 

information identified in this proposed 

AD, contact GE Aviation, Customer 

Services—Clearwater, P.O. Box 9013, 

Clearwater, Florida 33758; telephone 

727–539–1631; fax 727–539–0680; 

e-mail cs.support@ge.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: 

Georgios Roussos, Aerospace Engineer, 

Systems and Equipment Branch, ANM– 

130S, FAA, Seattle Aircraft Certification 

Office, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 917–6482; 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–2010–1205; Directorate Identifier 

2010–NM–146–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 

The FAA has examined the 

underlying safety issues involved in fuel 

tank explosions on several large 

transport airplanes, including the 

adequacy of existing regulations, the 

service history of airplanes subject to 

those regulations, and existing 

maintenance practices for fuel tank 

systems. As a result of those findings, 

we issued a regulation titled ‘‘Transport 

Airplane Fuel Tank System Design 

Review, Flammability Reduction and 

Maintenance and Inspection 

Requirements’’ (66 FR 23086, May 7, 

2001). In addition to new airworthiness 

standards for transport airplanes and 

new maintenance requirements, this 

rule included Special Federal Aviation 

Regulation No. 88 (‘‘SFAR 88,’’ 

Amendment 21–78, and subsequent 

Amendments 21–82 and 21–83). 

Among other actions, SFAR 88 

requires certain type design (i.e., type 

certificate (TC) and supplemental type 

certificate (STC)) holders to substantiate 

that their fuel tank systems can prevent 

ignition sources in the fuel tanks. This 

requirement applies to type design 

holders for large turbine-powered 

transport airplanes and for subsequent 

modifications to those airplanes. It 

requires them to perform design reviews 

and to develop design changes and 

maintenance procedures if their designs 

do not meet the new fuel tank safety 

standards. As explained in the preamble 

to the rule, we intended to adopt 

airworthiness directives to mandate any 

changes found necessary to address 


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Federal Register / Vol. 75, No. 248 / Tuesday, December 28, 2010 / Proposed Rules 81509 

unsafe conditions identified as a result 

of these reviews. 

In evaluating these design reviews, we 

have established four criteria intended 

to define the unsafe conditions 

associated with fuel tank systems that 

require corrective actions. The 

percentage of operating time during 

which fuel tanks are exposed to 

flammable conditions is one of these 

criteria. The other three criteria address 

the failure types under evaluation: 

single failures, single failures in 

combination with a latent condition(s), 

and in-service failure experience. For all 

four criteria, the evaluations included 

consideration of previous actions taken 

that may mitigate the need for further 

action. 

We have determined that the actions 

identified in this AD are necessary to 

reduce the potential of ignition sources 

inside fuel tanks, which, in combination 

with flammable fuel vapors, could result 

in a fuel tank explosion and consequent 

loss of the airplane. 

As part of the SFAR 88 analysis, 

Boeing found indications of wiring 

deterioration that could cause electrical 

faults in the main tank boost pumps, 

main tank jettison pumps, or center tank 

override/jettison pumps could result in 

an overheat or electrical arc condition 

that could provide an ignition source in 

the fuel tanks. Also, uncommanded dry 

operation of the main tank jettison 

pumps or the center tank override/ 

jettison pumps could result from 

electrical faults or a single failure in the 

pump switch or the electrical load 

control unit (ELCU). Extended dry 

operation of the pump could cause an 

overheat condition, electrical arc, or 

frictional sparks, providing an ignition 

source in the fuel tanks. These ignition 

sources, in combination with flammable 

fuel vapors, could result in a fuel tank 

explosion and consequent loss of the 

airplane. 

Relevant Service Information 

We have reviewed Boeing Service 

Bulletin 777–28A0038, Revision 1, 

dated September 20, 2010. That service 

bulletin describes procedures for 

replacing 4 main tank boost pump 

relays in electrical load management 

system (ELMS) panels P110, P210, and 

P320, with new ground fault interrupter 

(GFI) relays. 

Boeing Service Bulletin 777– 

28A0038, Revision 1, dated September 

20, 2010, references the service bulletins 

identified in the following table as 

additional sources of guidance for 

replacing the main tank boost pump 

relays. 

TABLE—SERVICE BULLETINS FOR BOEING SERVICE BULLETIN 777–28A0038 

Service bulletin Revision level Date 

GE Aviation Service Bulletin 4000ELM–28– 

448.

1 .......................................................... January 7, 2010. 

GE Aviation Service Bulletin 4000ELM–28– 

451.

1 .......................................................... January 7, 2010. 

GE Aviation Service Bulletin 5000ELM–28– 

446.

1 .......................................................... January 7, 2010. 

GE Aviation Service Bulletin 5000ELM–28– 

449.

1 .......................................................... January 7, 2010. 

Smiths Service Bulletin 4000ELM–28–445 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 4000ELM–28–465 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 5000ELM–28–443 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 5000ELM–28–463 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 6000ELM–28–444 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 6000ELM–28–447 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 6000ELM–28–450 .... Original ............................................... August 8, 2007. 

Smiths Service Bulletin 6000ELM–28–464 .... Original ............................................... August 8, 2007. 

We have also reviewed Boeing Service 

Bulletin 777–28A0037, Revision 2, 

dated September 20, 2010. That service 

bulletin describes procedures for certain 

airplanes, for installing new panels, 

P301 and P302, in the main equipment 

center; making certain wiring changes; 

installing new GFI relays in the P301 

and P302 panels; and installing new 

ELMS software. For certain airplanes, 

that service bulletin describes 

procedures for measuring the bond 

resistance between the terminal lugs on 

certain studs and a ground bracket 

assembly, and corrective action if 

necessary. The corrective actions 

include repairing (cleaning of applicable 

components with solvent) or replacing 

(replacing applicable components with 

new components) affected components. 

Boeing Service Bulletin 777– 

28A0039, Revision 2, dated September 

20, 2010, is an additional source of 

guidance for installing ELMS software. 

Smiths Service Bulletin 5000ELM– 

28–454, dated August 13, 2007; and GE 

Aviation Service Bulletin 6000ELM–28– 

455, Revision 1, dated February 1, 2010; 

are additional sources of guidance for 

making wiring changes in the P110 and 

P210 panels. 

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 130 airplanes of U.S. 

registry. The following table provides 

the estimated costs for U.S. operators to 

comply with this proposed AD. 


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81510 Federal Register / Vol. 75, No. 248 / Tuesday, December 28, 2010 / Proposed Rules 

TABLE—ESTIMATED

COSTS

Action Work hours Average labor rate per hour Parts Cost per product Number of U.S.-reg- istered airplanes Fleet cost 

Replacements: Group 1 airplanes 

identified in Boeing Service Bulletin 777–28A0038.

3 $85 $25,577 $25,832 126 $3,254,832. 

Replacements: Group 2 airplanes 

identified in Boeing Service Bulletin 777–28A0038.

3 85 52,545 52,800 0 No airplanes currently on 

U.S. Register. 

Replacements: Group 3 airplanes 

identified in Boeing Service Bulletin 777–28A0038.

4 85 37,257 37,597 4 150,388. 

Replacements: Group 4 airplanes 

identified in Boeing Service Bulletin 777–28A0038.

4 85 17,816 18,156 0 No airplanes currently on 

U.S. Register. 

Installations and Measurement: 

Boeing Service Bulletin 777– 28A0037.

76 85 29,934 36,394 130 4,731,220. 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
Federal Register / Vol. 75, No. 248 / Tuesday, December 28, 2010 / Proposed Rules 81511 

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– 

2010–1205; Directorate Identifier 2010– 

NM–146–AD. 

Comments Due Date 

(a) We must receive comments by February 

11, 2011. 

Affected ADs 

(b) AD 2008–11–13, Amendment 

39–15536, affects this AD. 

Applicability 

(c) This AD applies to The Boeing 

Company Model 777–200, –200LR, –300, and 

–300ER series airplanes, certificated in any 

category; as identified in the service 

information specified in paragraphs (c)(1) 

and (c)(2) of this AD. 

(1) Boeing Service Bulletin 777–28A0038, 

Revision 1, dated September 20, 2010. 

(2) Boeing Service Bulletin 777–28A0037, 

Revision 2, dated September 20, 2010. 

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 the potential of ignition 

sources inside fuel tanks, which, in 

combination with flammable fuel vapors, 

could result in a 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. 

Related Airworthiness Limitation 

Note 1: AD 2008–11–13 requires a revision 

of the Airworthiness Limitations (AWLs) 

section of the Instructions for Continued 

Airworthiness to include limitations for the 

fuel tank systems. One of the limitations, 

AWL 28–AWL–18, requires a repetitive 

inspection of the ground fault interrupter 

(GFI) functions. 

Installations and Software Changes 

(g) For Group 1 and 2 airplanes identified 

as Configuration 2 in Boeing Service Bulletin 

777–28A0037, Revision 2, dated September 

20, 2010: Within 36 months after the effective 

date of this AD, install new panels, P301 and 

P302, in the main equipment center; make 

certain wiring changes; install new GFI relays 

in the P301 and P302 panels; and install new 

electrical load management system (ELMS) 

software; as applicable. Do the applicable 

actions in accordance with the 

Accomplishment Instructions of Boeing 

Service Bulletin 777–28A0037, Revision 2, 

dated September 20, 2010. 

Note 2: Boeing Service Bulletin 777– 

28A0039, Revision 2, dated September 20, 

2010, is an additional source of guidance for 

installing ELMS software. 

Note 3: Smiths Service Bulletin 5000ELM– 

28–454, dated August 13, 2007; and GE 

Aviation Service Bulletin 6000ELM–28–455, 

Revision 1, dated February 1, 2010; are 

additional sources of guidance for making a 

wiring change in the P110 and P210 panels, 

respectively. 

(h) For Group 1 and 2 airplanes identified 

as Configuration 1 in Boeing Service Bulletin 

777–28A0037, Revision 2, dated September 

20, 2010: Within 36 months after the effective 

date of this AD, do bonding resistance 

measurements to verify bonding 

requirements as specified in Boeing Service 

Bulletin 777–28A0037, Revision 2, dated 

September 20, 2010, are met, in accordance 

with the Accomplishment Instructions of 

Boeing Service Bulletin 777–28A0037, 

Revision 2, dated September 20, 2010. 

Replacement of GFI Relays 

(i) For airplanes identified in Boeing 

Service Bulletin 777–28A0038, Revision 1, 

dated September 20, 2010: Within 60 months 

after the effective date of this AD, replace 4 

main tank boost pump relays in electrical 

load management system panels P110, P210, 

and P320 with new GFI relays, in accordance 

with the Accomplishment Instructions of 

Boeing Service Bulletin 777–28A0038, 

Revision 1, dated September 20, 2010. 

Note 4: Boeing Service Bulletin 777– 

28A0038, Revision 1, dated September 20, 

2010, references the service bulletins 

identified in Table 1 of this AD as additional 

sources of guidance for replacing the main 

tank boost pump relays. 

TABLE 1—ADDITIONAL SOURCES OF GUIDANCE FOR REPLACING THE MAIN TANK BOOST PUMP RELAYS

Group No. of airplanes, as 

identified in Boeing Service 

Bulletin 777–28A0038, Revision 1, dated September 

20, 2010 

Panel No. Service bulletin Revision level Date 

Group 1 ............................... P110 Smiths Service Bulletin 

5000ELM–28–443.

Original .............................. August 8, 2007. 


emcdonald on DSK2BSOYB1PROD with PROPOSALS
81512 Federal Register / Vol. 75, No. 248 / Tuesday, December 28, 2010 / Proposed Rules 

TABLE 1—ADDITIONAL SOURCES OF GUIDANCE FOR REPLACING THE MAIN TANK BOOST PUMP RELAYS—Continued 

Group No. of airplanes, as 

identified in Boeing Service 

Bulletin 777–28A0038, Revision 1, dated September 

20, 2010 

Panel No. Service bulletin Revision level Date 

Group 1 ............................... P210 Smiths Service Bulletin 

6000ELM–28–444.

Original .............................. August 8, 2007. 

Group 1 ............................... P320 Smiths Service Bulletin 

4000ELM–28–445.

Original .............................. August 8, 2007. 

Group 2 ............................... P110 GE Aviation Service Bulletin 

5000ELM–28–446.

1 ........................................ January 7, 2010. 

Group 2 ............................... P210 Smiths Service Bulletin 

6000ELM–28–447.

Original .............................. August 8, 2007. 

Group 2 ............................... P320 GE Aviation Service Bulletin 

4000ELM–28–448.

1 ........................................ January 7, 2010. 

Group 3 ............................... P110 GE Aviation Service Bulletin 

5000ELM–28–449.

1 ........................................ January 7, 2010. 

Group 3 ............................... P210 Smiths Service Bulletin 

6000ELM–28–450.

Original .............................. August 8, 2007. 

Group 3 ............................... P320 GE Aviation Service Bulletin 

4000ELM–28–451.

1 ........................................ January 7, 2010. 

Group 4 ............................... P110 Smiths Service Bulletin 

5000ELM–28–463.

Original .............................. August 8, 2007. 

Group 4 ............................... P210 Smiths Service Bulletin 

6000ELM–28–464.

Original .............................. August 8, 2007. 

Group 4 ............................... P320 Smiths Service Bulletin 

4000ELM–28–465.

Original .............................. August 8, 2007. 

Paperwork Reduction Act Burden Statement 

(j) A federal agency may not conduct or 

sponsor, and a person is not required to 

respond to, nor shall a person be subject to 

a penalty for failure to comply with a 

collection of information subject to the 

requirements of the Paperwork Reduction 

Act unless that collection of information 

displays a current valid OMB Control 

Number. The OMB Control Number for this 

information collection is 2120–0056. Public 

reporting for this collection of information is 

estimated to be approximately 5 minutes per 

response, including the time for reviewing 

instructions, completing and reviewing the 

collection of information. All responses to 

this collection of information are mandatory. 

Comments concerning the accuracy of this 

burden and suggestions for reducing the 

burden should be directed to the FAA at: 800 

Independence Ave., SW., Washington, DC 

20591, Attn: Information Collection 

Clearance Officer, AES–200. 

Alternative Methods of Compliance 

(AMOCs) 

(k)(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. 

Send information to Attn: Georgios Roussos, 

Aerospace Engineer, Systems and Equipment 

Branch, ANM–130S, FAA, Seattle Aircraft 

Certification Office, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356; telephone 

(425) 917–6482; 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 

December 17, 2010. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. 2010–32657 Filed 12–27–10; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–1204; Directorate 

Identifier 2010–NM–147–AD] 

RIN 2120–AA64 

Airworthiness Directives; Various 

Aviation Communication & 

Surveillance Systems (ACSS) Traffic 

Alert and Collision Avoidance System 

(TCAS) Units 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for various 

aircraft equipped with certain ACSS 

TCAS units. This proposed AD would 

require upgrading software. This 

proposed AD results from reports of 

anomalies with TCAS units during a 

flight test over a high density airport. 

The TCAS units dropped several 

reduced surveillance aircraft tracks 

because of interference limiting. We are 

proposing this AD to prevent TCAS 

units from dropping tracks, which could 

compromise separation of air traffic and 

lead to subsequent mid-air collisions. 

DATES: We must receive comments on 

this proposed AD by February 11, 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 Aviation 

Communication & Surveillance 

Systems, LLC, 19810 North 7th Avenue, 

Phoenix, Arizona 85027–4741; 

telephone (623) 445–7040; fax (623) 

445–7004; e-mail acss.orderadmin@L3com.com; Internet http:// 

www.acss.com. You may review copies 

of the referenced service information at 


emcdonald on DSK2BSOYB1PROD with PROPOSALS