Airworthiness Directives; Boeing Model 737-400, -500, -600, -700, -700C, -800, and -900 Series Airplanes, 7492-7494 [E8-2355]

Download as PDF 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 Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: 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. ebenthall on PRODPC61 with PROPOSALS SUMMARY: VerDate Aug<31>2005 14:33 Feb 07, 2008 Jkt 214001 You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://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. ADDRESSES: Examining the AD Docket You may examine the AD docket on the Internet at https:// 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 https:// www.regulations.gov, including any personal information you provide. We PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 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 E:\FR\FM\08FEP1.SGM 08FEP1 Federal Register / Vol. 73, No. 27 / Friday, February 8, 2008 / Proposed Rules 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. ebenthall on PRODPC61 with PROPOSALS 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 VerDate Aug<31>2005 14:33 Feb 07, 2008 Jkt 214001 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 Authority: 49 U.S.C. 106(g), 40113, 44701. [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 PO 00000 Frm 00012 Fmt 4702 Sfmt 4702 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 1. The authority citation for part 39 continues to read as follows: § 39.13 7493 (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. E:\FR\FM\08FEP1.SGM 08FEP1 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 Federal Aviation Administration, DOT. ACTION: Supplemental notice of proposed rulemaking; reopening of comment period. ebenthall on PRODPC61 with PROPOSALS AGENCY: 17:33 Feb 07, 2008 Jkt 214001 Comments must be received by March 4, 2008. DATES: 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. ADDRESSES: 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. FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: Comments Invited 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 VerDate Aug<31>2005 airplane. This action is intended to address the identified unsafe condition. 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. PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 • 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 E:\FR\FM\08FEP1.SGM 08FEP1

Agencies

[Federal Register Volume 73, Number 27 (Friday, February 8, 2008)]
[Proposed Rules]
[Pages 7492-7494]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-2355]


-----------------------------------------------------------------------

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 https://
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 https://
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 https://
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

[[Page 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 work-hour. 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.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  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.

[[Page 7494]]

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