7492 Federal Register / Vol. 73, No. 27 / Friday, February 8, 2008 / Proposed Rules 

(425) 917–6577; fax (425) 917–6590; has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. 

(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 appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

(3) An AMOC that provides an acceptable 

level of safety may be used for any repair 

required by this AD, if it is approved by an 

Authorized Representative for the Boeing 

Commercial Airplanes Delegation Option 

Authorization Organization who has been 

authorized by the Manager, Seattle ACO, to 

make those findings. For a repair method to 

be approved, the repair must meet the 

certification basis of the airplane, and the 

approval must specifically refer to this AD. 

Issued in Renton, Washington, on January 

31, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–2354 Filed 2–7–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2008–0152; Directorate 

Identifier 2007–NM–348–AD] 

RIN 2120–AA64 

Airworthiness Directives; Boeing 

Model 737–400, –500, –600, –700, 

–700C, –800, and –900 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 

Boeing Model 737–400, –500, –600, 

–700, –700C, –800, and –900 series 

airplanes. This proposed AD would 

require an inspection to determine the 

part and serial numbers of the 

windshield wiper motors for the pilot’s 

and first officer’s windshields, and the 

applicable corrective action. This 

proposed AD results from two reports 

that the left and right windshield wipers 

stopped working in flight. We are 

proposing this AD to prevent failure of 

the windshield wipers in wet weather, 

which could result in decreased 

visibility for the flightcrew. 

DATES: We must receive comments on 

this proposed AD by March 24, 2008. 

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 AD, contact Boeing Commercial 

Airplanes, P.O. Box 3707, Seattle, 

Washington 98124–2207. 

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: Nick 

Wilson, Aerospace Engineer, Cabin 

Safety and Environmental Systems 

Branch, ANM–150S, FAA, Seattle 

Aircraft Certification Office, 1601 Lind 

Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 917–6476; 

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–2008–0152; Directorate Identifier 

2007–NM–348–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http:// 

www.regulations.gov, including any 

personal information you provide. We 

will also post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

We have received two reports that the 

left and right windshield wipers 

stopped working in flight. In one 

incident, the left and right windshield 

wiper motors stopped at the same time 

during a landing approach in wet 

weather. Investigation revealed that the 

power converter module for the 

windshield wipers was not properly 

soldered. Failure of the windshield 

wipers in wet weather, if not corrected, 

could result in decreased visibility for 

the flightcrew. 

Other Related Rulemaking 

On October 2, 2003, we issued AD 

2003–20–13, amendment 39–13331 (68 

FR 58268, October 9, 2003), applicable 

to certain Boeing Model 737–400, –500, 

–600, –700, and –800 series airplanes. 

That AD requires either modification of 

the wiring to the windshield wiper 

motors in the flight compartment or 

replacement of those windshield wiper 

motor/converters with new motor/ 

converters. That AD resulted from 

reports of the windshield motors 

stalling during flight. We issued that AD 

to prevent a reduction in flightcrew 

visibility due to stalled wiper motors 

during heavy precipitation and a period 

of substantial crew workload, which 

could result in damage to the airplane 

structure and injury to flightcrew, 

passengers, or ground personnel during 

final approach for landing. For certain 

airplanes, accomplishing the 

modification required by paragraph (b) 

of AD 2003–20–13 is acceptable for 

compliance with certain requirements of 

this proposed AD. 

Relevant Service Information 

We have reviewed Boeing Service 

Bulletin 737–30A1057, Revision 1, 

dated October 31, 2007, for Model 737–

600, –700, –700C, –800, and –900 series 

airplanes; and Boeing Alert Service 

Bulletin 737–30A1059, dated September 

10, 2007, for Model 737–400 and –500 

series airplanes. The service bulletins 

describe procedures for looking at the 

windshield wiper motors for the pilot’s 

and first officer’s windshields to 

determine the part number and serial 

number of the windshield wiper motors, 

and doing the applicable corrective 

action. The corrective actions include 

the following: 

• Replacing the windshield wiper 

motor with an improved windshield 

wiper motor if the part and serial 

numbers cannot be read, or if the part 

and serial numbers are listed in 


ebenthall on PRODPC61 with PROPOSALS
Federal Register / Vol. 73, No. 27 / Friday, February 8, 2008 / Proposed Rules 7493 

Appendix A of Rosemount Aerospace 

Service Bulletin 2313M–347/2313M–

348–30–01, dated June 30, 2006, and the 

‘‘Module Replacement Completed (Yes/ 

No)’’ column is marked ‘‘No.’’ (The part 

number is identified as the model 

number in Appendix A of the 

Rosemount Aerospace service bulletin.) 

• Changing the part number if the 

part and serial numbers are not listed in 

Appendix A of Rosemount Aerospace 

service bulletin, or if the part and serial 

numbers are listed in Appendix A of 

Rosemount Aerospace service bulletin 

and the ‘‘Module Replacement 

Completed (Yes/No)’’ column is marked 

‘‘Yes.’’

The Boeing service bulletins refer to 

the Rosemount Aerospace service 

bulletin as an additional source of 

service information for determining 

whether the windshield wiper motor 

has been previously replaced and for 

changing the part number. 

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(se) 

same type design(s). 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 767 airplanes of U.S. 

registry. We also estimate that it would 

take about 1 work-hour per product to 

comply with the proposed inspection. 

The average labor rate is $80 per workhour. Based on these figures, we 

estimate the cost of this proposed AD to 

the U.S. operators to be $61,360 or $80 

per product. 

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, 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: 

Boeing: Docket No. FAA–2008–0152; 

Directorate Identifier 2007–NM–348–AD. 

Comments Due Date 

(a) We must receive comments by March 

24, 2008. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to the Boeing airplanes 

identified in paragraphs (c)(1) and (c)(2) of 

this AD, certificated in any category. 

(1) Model 737–400 and –500 series 

airplanes as identified in Boeing Alert 

Service Bulletin 737–30A1059, dated 

September 10, 2007. 

(2) Model 737–600, –700, –700C, –800, and 

–900 series airplanes as identified in Boeing 

Service Bulletin 737–30A1057, Revision 1, 

dated October 31, 2007. 

Unsafe Condition 

(d) This AD results from two reports that 

the left and right windshield wipers stopped 

working in flight. We are issuing this AD to 

prevent failure of the windshield wipers in 

wet weather, which could result in decreased 

visibility for the flightcrew. 

Compliance 

(e) Comply with this AD within the 

compliance times specified, unless already 

done. 

Inspection and Corrective Actions if 

Necessary 

(f) Within 60 months after the effective 

date of this AD, inspect to determine the part 

number and serial number of the windshield 

wiper motors for the pilot’s and first officer’s 

windshields, and do all the applicable 

corrective actions, by accomplishing all of 

the applicable actions specified in the 

Accomplishment Instructions of Boeing Alert 

Service Bulletin 737–30A1059, dated 

September 10, 2007 (for Model 737–400 and 

–500 series airplanes); or Boeing Service 

Bulletin 737–30A1057, Revision 1, dated 

October 31, 2007 (for Model 737–600, –700, 

–700C, –800, and –900 series airplanes); as 

applicable. A review of airplane maintenance 

records is acceptable in lieu of the inspection 

if the part number and serial number of the 

windshield wiper motors can be conclusively 

determined from that review. 

Note 1: The Boeing service bulletins refer 

to Rosemount Aerospace Service Bulletin 

2313M–347/2313M–348–30–01, dated June 

30, 2006, as an additional source of service 

information for determining whether the 

windshield wiper motor has been previously 

replaced and for changing the part number. 

Credit for Modification Done According to 

AD 2003–20–13 

(g) For Model 737–400, –500, –600, –700, 

and –800 series airplanes: Accomplishing the 

modification required by paragraph (b) of AD 

2003–20–13, amendment 39–13331, is 

acceptable for compliance with the 

requirements of paragraph (f) of this AD, 

provided that no Rosemount Aerospace 

windshield wiper motor having part number 

(P/N) 2313M–347–3 or P/N 2313M–348–3 

has been installed. 

Credit for Actions Done According to 

Previous Issue of Service Bulletin 

(h) For Model 737–600, –700, –700C, –800, 

and –900 series airplanes: Actions done 

before the effective date of this AD in 

accordance with Boeing Alert Service 

Bulletin 737–30A1057, dated October 6, 

2006, are acceptable for compliance with the 

requirements of paragraph (f) of this AD. 

Parts Installation 

(i) As of the effective date of this AD, no 

person may install Rosemount Aerospace 

windshield wiper motors having P/N 

2313M–347–3 or P/N 2313M–348–3 on any 

airplane. 


ebenthall on PRODPC61 with PROPOSALS
7494 Federal Register / Vol. 73, No. 27 / Friday, February 8, 2008 / Proposed Rules 

Alternative Methods of Compliance 

(AMOCs) 

(j)(1) The Manager, Seattle Aircraft 

Certification Office, FAA, ATTN: Nick 

Wilson, Aerospace Engineer, Cabin Safety 

and Environmental Systems Branch, ANM–

150S, 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone (425) 

917–6476; fax (425) 917–6590; has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. 

(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 appropriate principal inspector 

(PI) in the FAA Flight Standards District 

Office (FSDO), or lacking a PI, your local 

FSDO. 

Issued in Renton, Washington, on January 

31, 2008. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E8–2355 Filed 2–7–08; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. 2003–NM–33–AD] 

RIN 2120–AA64 

Airworthiness Directives; Empresa 

Brasileira de Aeronautica S.A. 

(EMBRAER) Model EMB–120, –120ER, 

–120FC, –120QC, and –120RT 

Airplanes 

AGENCY: Federal Aviation 

Administration, DOT. 

ACTION: Supplemental notice of 

proposed rulemaking; reopening of 

comment period. 

SUMMARY: This document revises an 

earlier proposed airworthiness directive 

(AD), applicable to all EMBRAER Model 

EMB–120 series airplanes, that would 

have required revising the airplane 

flight manual to include operational 

limitations for use of the autopilot, and 

installing two placards that advise the 

flight crew to check the pitch trim 

before descent. This new action would 

retain the original requirements, but 

with revised placard language. This new 

action would also require modifying the 

elevator trim system, which would 

terminate the requirements of the AD. 

The actions specified by this new 

proposed AD are intended to prevent 

pitch trim upsets if the pitch trim 

actuators jam or freeze, which could 

result in reduced controllability of the 

airplane. This action is intended to 

address the identified unsafe condition. 

DATES: Comments must be received by 

March 4, 2008. 

ADDRESSES: Submit comments in 

triplicate to the Federal Aviation 

Administration (FAA), Transport 

Airplane Directorate, ANM–114, 

Attention: Rules Docket No. 2003–NM–

33–AD, 1601 Lind Avenue, SW., 

Renton, Washington 98057–3356. 

Comments may be inspected at this 

location between 9 a.m. and 3 p.m., 

Monday through Friday, except Federal 

holidays. Comments may be submitted 

via fax to (425) 227–1232. Comments 

may also be sent via the Internet using 

the following address: 9-anmnprmcomment@faa.gov. Comments sent 

via fax or the Internet must contain 

‘‘Docket No. 2003–NM–33–AD’’ in the 

subject line and need not be submitted 

in triplicate. Comments sent via the 

Internet as attached electronic files must 

be formatted in Microsoft Word 97 or 

2000 or ASCII text. 

The service information referenced in 

the proposed rule may be obtained from 

Empresa Brasileira de Aeronautica S.A. 

(EMBRAER), P.O. Box 343—CEP 12.225, 

Sao Jose dos Campos—SP, Brazil. This 

information may be examined at the 

FAA, Transport Airplane Directorate, 

1601 Lind Avenue, SW., Renton, 

Washington. 

FOR FURTHER INFORMATION CONTACT: Dan 

Rodina, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–2125; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

Interested persons are invited to 

participate in the making of the 

proposed rule by submitting such 

written data, views, or arguments as 

they may desire. Communications shall 

identify the Rules Docket number and 

be submitted in triplicate to the address 

specified above. All communications 

received on or before the closing date 

for comments, specified above, will be 

considered before taking action on the 

proposed rule. The proposals contained 

in this action may be changed in light 

of the comments received. 

Submit comments using the following 

format: 

• Organize comments issue-by-issue. 

For example, discuss a request to 

change the compliance time and a 

request to change the service bulletin 

reference as two separate issues. 

• For each issue, state what specific 

change to the proposed AD is being 

requested. 

• Include justification (e.g., reasons or 

data) for each request. 

Comments are specifically invited on 

the overall regulatory, economic, 

environmental, and energy aspects of 

the proposed rule. All comments 

submitted will be available, both before 

and after the closing date for comments, 

in the Rules Docket for examination by 

interested persons. A report 

summarizing each FAA-public contact 

concerned with the substance of this 

proposal will be filed in the Rules 

Docket. 

Commenters wishing the FAA to 

acknowledge receipt of their comments 

submitted in response to this action 

must submit a self-addressed, stamped 

postcard on which the following 

statement is made: ‘‘Comments to 

Docket Number 2003–NM–33–AD.’’ The 

postcard will be date stamped and 

returned to the commenter. 

Availability of NPRMs 

Any person may obtain a copy of this 

NPRM by submitting a request to the 

FAA, Transport Airplane Directorate, 

ANM–114, Attention: Rules Docket No. 

2003–NM–33–AD, 1601 Lind Avenue 

SW., Renton, Washington 98057–3356. 

Discussion 

A proposal to amend part 39 of the 

Federal Aviation Regulations (14 CFR 

part 39) to add an airworthiness 

directive (AD), applicable to all 

EMBRAER Model EMB–120 series 

airplanes, was published as a notice of 

proposed rulemaking (NPRM) in the 

Federal Register on April 1, 2003 (68 FR 

15684). That NPRM would have 

required revising the airplane flight 

manual to include operational 

limitations for use of the autopilot, and 

installing two placards that advise the 

flight crew to check the pitch trim 

before descent. That NPRM was 

prompted by pitch trim upsets during 

the autopilot-coupled descent phase of 

flight, which have been attributed to 

jammed or frozen pitch trim actuators. 

That condition, if not corrected, could 

result in reduced controllability of the 

airplane. 

New Relevant Service Information 

The original NPRM cited EMBRAER 

Service Bulletin 120–25–0262, dated 

October 15, 2001, and Change 01, dated 

September 3, 2002, as the appropriate 

sources of service information for 

installing the placards. Since we issued 

the original NPRM, EMBRAER revised 

the service bulletin. Change 02, dated 

October 30, 2003, recommends revised 


ebenthall on PRODPC61 with PROPOSALS