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

75267

Vol. 69, No. 241

Thursday, December 16, 2004

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39

[Docket No. FAA–2004–19865; Directorate 

Identifier 2003–NM–242–AD] 

RIN 2120–AA64

Airworthiness Directives; Boeing 

Model 747, 757, 767 and 777 Series 

Airplanes

AGENCY: Federal Aviation 

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede an existing airworthiness 

directive (AD) for certain Boeing Model 

747, 757, 767, and 777 series airplanes. 

That AD currently requires modifying 

certain drip shields located on the flight 

deck, and follow-on actions. This 

proposed AD would remove certain 

airplanes that are included in the 

applicability statement of the existing 

AD, and would require modifying 

additional drip shields on the flight 

deck of certain other airplanes. This 

proposed AD is prompted by a 

determination that certain airplanes 

have drip shields that are not 

adequately resistant to fire. We are 

proposing this AD to prevent potential 

ignition of the moisture barrier cover of 

the drip shield, which could propagate 

a small fire that results from an 

electrical arc, leading to a larger fire.

DATES: We must receive comments on 

this proposed AD by January 31, 2005.

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD. 

• DOT Docket Web site: Go to http:/

/dms.dot.gov and follow the instructions 

for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov

and follow the instructions for sending 

your comments electronically. 

• Mail: Docket Management Facility; 

U.S. Department of Transportation, 400 

Seventh Street SW., Nassif Building, 

room PL–401, Washington, DC 20590. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

For service information identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, P.O. Box 3707, 

Seattle, Washington 98124–2207. 

You can examine the contents of this 

AD docket on the Internet at http://

dms.dot.gov, or at the Docket 

Management Facility, U.S. Department 

of Transportation, 400 Seventh Street 

SW., Room PL–401, on the plaza level 

of the Nassif Building, Washington, DC.

FOR FURTHER INFORMATION CONTACT: 

Technical information: Patrick 

Gillespie, Aerospace Engineer, Cabin 

Safety and Environmental Systems 

Branch, ANM–150S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue, SW., Renton, Washington 

98055–4056; telephone (425) 917–6429; 

fax (425) 917–6590. 

Plain language information: Marcia 

Walters, marcia.walters@faa.gov.

SUPPLEMENTARY INFORMATION: 

Docket Management System (DMS) 

The FAA has implemented new 

procedures for maintaining AD dockets 

electronically. As of May 17, 2004, new 

AD actions are posted on DMS and 

assigned a docket number. We track 

each action and assign a corresponding 

directorate identifier. The DMS AD 

docket number is in the form ‘‘Docket 

No. FAA–2004–99999.’’ The Transport 

Airplane Directorate identifier is in the 

form ‘‘Directorate Identifier 2004–NM–

999–AD.’’ Each DMS AD docket also 

lists the directorate identifier (‘‘Old 

Docket Number’’) as a cross-reference 

for searching purposes. 

Comments Invited 

We invite you to submit any relevant 

written data, views, or arguments 

regarding this proposed AD. Send your 

comments to an address listed under 

ADDRESSES. Include ‘‘Docket No. FAA–

2004–19865; Directorate Identifier 

2003–NM–242–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of the proposed AD. We will 

consider all comments received by the 

closing date and may amend the 

proposed AD in light of those 

comments. 

We will post all comments we 

receive, without change, to http://

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this proposed AD. 

Using the search function of our docket 

Web site, anyone can find and read the 

comments in any of our dockets, 

including the name of the individual 

who sent the comment (or signed the 

comment on behalf of an association, 

business, labor union, etc.). You can 

review the DOT’s complete Privacy Act 

Statement in the Federal Register

published on April 11, 2000 (65 FR 

19477–78), or you can visit http://

dms.dot.gov.

We are reviewing the writing style we 

currently use in regulatory documents. 

We are interested in your comments on 

whether the style of this document is 

clear, and your suggestions to improve 

the clarity of our communications that 

affect you. You can get more 

information about plain language at 

http://www.faa.gov/language and http://

www.plainlanguage.gov.

Examining the Docket 

You can examine the AD docket on 

the Internet at http://dms.dot.gov, or in 

person at the Docket Management 

Facility office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket 

Management Facility office (telephone 

(800) 647–5227) is located on the plaza 

level of the Nassif Building at the DOT 

street address stated in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after the DMS 

receives them. 

Discussion 

On December 20, 2000, we issued AD 

2000–26–04, amendment 39–12054 (65 

FR 82901, December 29, 2000), for 

certain Boeing Model 747, 757, 767, and 

777 series airplanes. That AD requires 

modification of certain drip shields 

located on the flight deck, and followon actions. That AD was prompted by 

a report that, on certain Boeing Model 

747, 757, 767, and 777 series airplanes, 

the airplane manufacturer found some 

drip shields assembled with the 

75268 Federal Register / Vol. 69, No. 241 / Thursday, December 16, 2004 / Proposed Rules 

moisture barrier cover bonded to the 

insulation and multiple insulation 

layers bonded together using a nonflame-resistant adhesive. We issued that 

AD to prevent potential ignition of the 

moisture barrier cover of the drip shield, 

which could propagate a small fire that 

results from an electrical arc, leading to 

a larger fire. 

Actions Since Existing AD Was Issued 

Since we issued AD 2000–26–04, the 

airplane manufacturer has determined 

that additional Model 757–200, –200CB, 

and –200PF series airplanes in certain 

configurations have drip shields that 

were not fire-blocked from potential 

ignition sources. 

Also, the airplane manufacturer has 

sampled and tested drip shield material 

on certain Model 747 and 767 series 

airplanes, and has determined that 

airplanes within certain line number 

ranges have compliant drip shields. 

Neither further testing nor installation 

of fire blocks is necessary on airplanes 

within these line number ranges. As a 

result, we estimate that approximately 

550 Model 747 series airplanes and 470 

Model 767 series airplanes, worldwide, 

will no longer be subject to the existing 

requirements.

Relevant Service Information 

We have reviewed Boeing Service 

Bulletin 757–25–0226, Revision 3, dated 

September 2, 2004. (AD 2000–26–04 

refers to the original issue of that service 

bulletin, dated July 3, 2000, as the 

acceptable source of service information 

for doing the required actions on certain 

Model 757–200, –200CB, and –200PF 

series airplanes.) Revision 3 of the 

service bulletin describes procedures for 

modifying certain drip shields on the 

flight deck by installing fire blocks in 

areas where the drip shield is exposed 

to potential ignition sources. The 

procedures in Revision 3 of the service 

bulletin are substantially similar to 

those in Revision 2 of the service 

bulletin, dated October 31, 2002. 

However, Revision 2 differs from the 

original issue of the service bulletin in 

that Revision 2 adds procedures for 

installing fire blocks above windows 

number 2 and 3 on the flight deck on 

certain airplanes. Revision 2 also 

clarifies certain other procedures and 

corrects a part number of a washer that 

is used with a rivet to attach fire blocks 

to the drip shields. We have determined 

that accomplishment of the actions 

specified in Revision 3 of the service 

information will adequately address the 

unsafe condition. 

We have also reviewed Boeing Service 

Bulletins 747–25–3253, Revision 3, 

dated September 4, 2003; and 767–25–

0290, Revision 4, dated October 28, 

2004. (AD 2000–26–04 refers to the 

original issues of these service bulletins, 

both dated June 29, 2000, as the 

acceptable sources of service 

information for doing the required 

actions on affected Model 747 and 767 

series airplanes.) Service bulletins 747–

25–3253, Revision 3, and 767–25–0290, 

Revision 4, describe procedures that are 

similar to those in the original issue of 

those service bulletins. The latest 

revisions include a revised effectivity 

listing (but don’t add any airplanes on 

which work is required) and clarify 

certain procedures. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to exist or 

develop on other products of this same 

type design. Therefore, we are 

proposing this AD, which would 

supersede AD 2000–26–04. This 

proposed AD would continue to require 

modifying certain drip shields on the 

flight deck, and related investigative 

and other specified actions. This 

proposed AD would remove certain 

Model 747 and Model 767 series 

airplanes from the applicability 

statement, and would require modifying 

additional drip shields on the flight 

deck on certain Model 757–200, 

–200CB, and –200PF series airplanes. 

This proposed AD would require you to 

use the service information described 

previously to perform these actions, 

except as discussed under ‘‘Difference 

Between the Proposed AD and Service 

Information.’’

Difference Between the Proposed AD 

and Service Information 

We have revised the applicability 

stated in paragraph (c) of this proposed 

AD to state that the requirements of this 

AD apply to Model 747 series airplanes 

having line numbers (L/Ns) 1 through 

299 inclusive and 951 through 1234 

inclusive (except L/Ns 292, 296, 297, 

1174, and 1216), and Model 767 series 

airplanes having L/Ns 470 through 768 

(except L/N 758). This applicability 

doesn’t directly correspond to the 

effectivity listing of Boeing Service 

Bulletins 747–25–3253, Revision 3, and 

767–25–0290, Revision 4. Those service 

bulletins state that no action is 

necessary on airplanes in Group 3 of 

Boeing Service Bulletin 747–25–3253, 

Revision 3, and in Group 1 of Boeing 

Service Bulletin 767–25–0290, Revision 

4. However, instructions for airplanes in 

those groups have been included in the 

service bulletin for the convenience of 

affected operators, so those airplanes are 

included in the effectivity listing. 

Because no action is necessary for those 

airplanes, we have removed the 

airplanes in those groups from the 

applicability stated in paragraph (c) of 

this AD. 

Changes to Existing AD 

This proposed AD would retain all 

requirements of AD 2000–26–04. Since 

AD 2000–26–04 was issued, the AD 

format has been revised, and certain 

paragraphs have been rearranged. As a 

result, the corresponding paragraph 

identifiers have changed in this 

proposed AD, as listed in the following 

table:

REVISED PARAGRAPH IDENTIFIERS

Requirement in AD

2000–26–04 

Corresponding

requirement in

this proposed

AD 

Paragraph (a) ...................... Paragraph (f). 

Paragraph (b) ...................... Paragraph (g). 

Paragraph (c) ...................... Paragraph (h). 

Also, we have revised the ‘‘Optional 

Sampling’’ provision in paragraph (h) of 

this AD. We changed the service 

bulletin reference for Model 747 series 

airplanes from the original issue to 

Revision 3 of Boeing Service Bulletins 

747–25–3253. As explained under 

‘‘Difference Between the Proposed AD 

and Service Information,’’ Boeing has 

moved certain airplanes on which no 

action is necessary from Group 1 to 

Group 3 in Revision 3 of the service 

bulletin. We have also removed the 

reference to Model 767 series airplanes 

listed in Group 1 of Boeing Service 

Bulletin 767–25–0290. Boeing doesn’t 

need any more sampling data from these 

airplanes. 

Costs of Compliance 

This proposed AD would affect about 

2,222 airplanes worldwide. The 

following table provides the estimated 

costs for U.S. operators to comply with 

the actions that are required by AD 

2000–26–04 and retained in this 

proposed AD. The average labor rate is 

$65 per work hour.

Federal Register / Vol. 69, No. 241 / Thursday, December 16, 2004 / Proposed Rules 75269

ESTIMATED COSTS

Model 

U.S.-registered

airplanes 

Work hours

(estimated) 

Labor cost

(estimated) 

Parts cost

(estimated) 

Maximum

fleet cost

(estimated) 

747 ............................................................ 105 39 $2,535 $2,300 to $3,500 ...................................... $633,675

757 ............................................................ 491 26 1,690 1,700 ......................................................... 1,664,490 

767 ............................................................ 140 17 1,105 2,300 ......................................................... 476,700 

777 ............................................................ 56 3 195 1,700 ......................................................... 106,120 

For Model 747 series airplanes listed 

in Group 1 in Boeing Service Bulletin 

747–25–3253, Revision 3, in lieu of 

doing the modification of the drip 

shields, this proposed AD provides an 

option to take samples of the drip 

shields to determine if the modification 

is necessary. Therefore, the estimated 

costs above may be reduced if some 

airplanes do not need the modification. 

It would take approximately 18 work 

hours to do the sampling, at an average 

labor rate of $65 per work hour. Based 

on these figures, the cost impact of the 

sampling is estimated to be $1,170 per 

sampled airplane. 

As many as 491 U.S.-registered Model 

757–200, –200CB, and –200PF series 

airplanes may be subject to the new 

proposed actions. These new actions 

would take about 8 additional work 

hours per airplane, at an average labor 

rate of $65 per work hour. Required 

parts would cost an additional $160 per 

airplane (for a total parts cost of $1,860). 

Based on these figures, the estimated 

cost of the new actions specified in this 

proposed AD for U.S. operators of 

affected airplanes is up to an additional 

$333,880 or $680 per airplane. 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. 

This rulemaking is promulgated 

under the authority described in subtitle 

VII, part A, subpart III, section 44701, 

‘‘General requirements.’’ Under that 

section, the FAA is charged with 

promoting safety 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 

proposed AD. 

Regulatory Findings 

We have 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 that the 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. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD. See the ADDRESSES

section for a location to examine the 

regulatory evaluation.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation 

safety, 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 

removing amendment 39–12054 (65 FR 

82901, December 29, 2000), and adding 

the following new airworthiness 

directive (AD):

Boeing: Docket No. FAA–2004–19865; 

Directorate Identifier 2003–NM–242–AD. 

Comments Due Date 

(a) The Federal Aviation Administration 

must receive comments on this airworthiness 

directive (AD) action by January 31, 2005. 

Affected ADs 

(b) This AD supersedes AD 2000–26–04, 

amendment 39–12054 (65 FR 82901, 

December 29, 2000). 

Applicability 

(c) This AD applies to Model 747, 757, 767, 

and 777 series airplanes having the line 

numbers (L/Ns) listed in Table 1 of this AD; 

certificated in any category.

TABLE 1.—APPLICABILITY

Model Affected L/Ns Except L/Ns 

747 .................... 1 through 299 inclusive and 951 through 1234 inclusive ............................................................... 292, 296, 297, 1174, 1216. 

757 .................... 2 through 895 inclusive ................................................................................................................... 870, 886, 894. 

767 .................... 470 through 768 inclusive ............................................................................................................... 758. 

777 .................... 2 through 254 inclusive ................................................................................................................... 120, 219, 230, 235, 242, 

245, 249. 

Unsafe Condition 

(d) This AD was prompted by a 

determination that certain airplanes have 

drip shields that are not adequately resistant 

to fire. We are issuing this AD to prevent 

potential ignition of the moisture barrier 

cover of the drip shield, which could 

propagate a small fire that results from an 

electrical arc, leading to a larger fire. 

75270 Federal Register / Vol. 69, No. 241 / Thursday, December 16, 2004 / Proposed Rules 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Requirements of AD 2000–26–04

Modification 

(f) Within 6 years after February 2, 2001 

(the effective date of AD 2000–26–04, 

amendment 39–12054), accomplish 

paragraphs (f)(1), (f)(2), and (f)(3) of this AD; 

in accordance with Boeing Service Bulletin 

747–25–3253, dated June 29, 2000, or 

Revision 3, dated September 4, 2003; 757–

25–0226, dated July 3, 2000, or Revision 3, 

dated September 2, 2004; 757–25–0228, 

dated July 3, 2000; 767–25–0290, dated June 

29, 2000, or Revision 4, dated October 28, 

2004; or 777–25–0164, dated June 29, 2000; 

as applicable; except as provided by 

paragraph (g) of this AD. For Model 757–200, 

–200CB, and –200PF series airplanes subject 

to Boeing Service Bulletin 757–25–0226: As 

of the effective date of this AD, only Revision 

3 of the service bulletin may be used. For 

Model 747 and 767 series airplanes: As of the 

effective date of this AD, only Boeing Service 

Bulletin 747–25–3253, Revision 3, or 767–

25–0290, Revision 4, as applicable, may be 

used. 

(1) Modify drip shields located on the 

flight deck by installing fire blocks. 

(2) Prior to further flight following 

accomplishment of paragraph (f)(1) of this 

AD, perform a functional test of any system 

disturbed by the modification, in accordance 

with the applicable service bulletin or the 

Airplane Maintenance Manual (AMM), as 

applicable. If any functional test fails, prior 

to further flight, isolate the fault, correct the 

discrepancy in accordance with the 

applicable AMM, and repeat the failed test 

until it is successfully accomplished. 

(3) Prior to further flight following the 

accomplishment of paragraphs (f)(1) and 

(f)(2) of this AD, install placards on all 

modified drip shields. 

(g) If any wires or equipment are installed 

on the outboard surface of the drip shield 

(that is, between the drip shield and the 

airplane structure), modify that area in 

accordance with a method approved by the 

Manager, Seattle Aircraft Certification Office 

(ACO), FAA. 

Optional Sampling (Certain Model 747 Series 

Airplanes) 

(h) For Model 747 series airplanes listed in 

Group 1 in Boeing Service Bulletin 747–25–

3253, Revision 3, dated September 4, 2003: 

In lieu of accomplishing paragraph (f) of this 

AD, within 6 years after February 2, 2001, 

collect samples of the insulation and 

adhesive of the drip shields, and submit the 

samples to the manufacturer for testing, in 

accordance with the Accomplishment 

Instructions of Boeing Service Bulletin 747–

25–3253, dated June 29, 2000, or Revision 3, 

dated September 4, 2003. After the effective 

date of this AD, only Revision 3 may be used.

(1) If the test on all samples is positive, no 

further action is required by this AD. 

(2) If the test on any sample is negative, 

accomplish paragraph (f) of this AD before 

the compliance time specified in that 

paragraph. 

New Requirements of This AD 

Model 757–200, –200CB –200PF Series 

Airplanes Previously Modified 

(i) For Model 757–200, –200CB, and 

–200PF series airplanes that were modified 

before the effective date of this AD in 

accordance with Boeing Service Bulletin 

757–25–0226, dated July 3, 2000: Within 6 

years after the effective date of this AD, 

modify drip shields located above windows 

number 2 and 3 on the flight deck by 

installing fire blocks, in accordance with the 

Accomplishment Instructions of Boeing 

Service Bulletin 757–25–0226, Revision 3, 

dated September 2, 2004; except as provided 

by paragraph (g) of this AD. After the 

modification, do the actions required by 

paragraph (f)(2) and (f)(3) of this AD as these 

actions apply to the drip shields modified in 

accordance with this paragraph. 

Previously Accomplished Actions 

(j) Modifying the drip shields before the 

effective date of this AD in accordance with 

the applicable service bulletin specified in 

paragraph (j)(1) or (j)(2) of this AD is 

acceptable for compliance with the 

corresponding requirements of paragraphs (f) 

and (i) of this AD, as applicable. 

(1) For Model 757–200, –200CB, and 

–200PF series airplanes: Boeing Service 

Bulletin 757–25–0226, Revision 2, dated 

October 31, 2002. 

(2) For Model 767 series airplanes: Boeing 

Service Bulletin 767–25–0290, Revision 3, 

dated June 26, 2003. 

Alternative Methods of Compliance (AMOCs) 

(k)(1) The Manager, Seattle ACO, FAA, has 

the authority to approve AMOCs for this AD, 

if requested using the procedures found in 14 

CFR 39.19. 

(2) Except for Model 757–200, –200CB, and 

–200PF series airplanes listed in Boeing 

Service Bulletin 757–25–0226, Revision 3, 

dated September 2, 2004: Alternative 

methods of compliance, approved previously 

in accordance with AD 2000–26–04, 

amendment 39–12054, are approved as 

alternative methods of compliance with this 

AD.

Issued in Renton, Washington, on 

December 6, 2004. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service.

[FR Doc. 04–27503 Filed 12–15–04; 8:45 am] 

BILLING CODE 4910–13–P

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2004–19866; Directorate 

Identifier 2004–NM–25–AD] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 767–200, –300, and –300F Series 

Airplanes

AGENCY: Federal Aviation 

Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Boeing Model 767–200, –300, 

and –300F series airplanes. This 

proposed AD would require verifying 

the part and serial numbers of certain 

main landing gear (MLG) bogie beam 

pivot pins; replacing those pivot pins 

with new or overhauled pivot pins if 

necessary; and ultimately replacing all 

pivot pins with new, improved pivot 

pins. This proposed AD is prompted by 

reports indicating that numerous 

fractures of the MLG bogie beam pivot 

pin have been found and that some 

pivot pins may have had improper 

rework during manufacture. We are 

proposing this AD to prevent fracture of 

the MLG bogie beam pivot pin, which 

could lead to possible loss of the MLG 

truck during takeoff or landing and 

consequent loss of control of the 

airplane.

DATES: We must receive comments on 

this proposed AD by January 31, 2005.

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD. 

• DOT Docket Web site: Go to http:/

/dms.dot.gov and follow the instructions 

for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov

and follow the instructions for sending 

your comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street SW., Nassif Building, 

Room PL–401, Washington, DC 20590. 

• By fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

For service information identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, P.O. Box 3707, 

Seattle, Washington 98124–2207.