AD 2008-24-05 Airworthiness Directives; Boeing Model 737-400, -500, -600, -700, -700C, -800, and -900 Series Airplanes

Models named: 737-400, -500 series, 737-600, -700, -700C, -800, -900 series. Read the applicability below — it usually turns on serial or part numbers too.

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.

Comply with this AD within the compliance times specified, unless already done. Inspection and Corrective Actions if Necessary (f) Except as provided by paragraph (g) of this AD: 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 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 required by paragraph (f) of this AD if the part number and serial number of the windshield wiper motors can be conclusively determined from that review. Following the inspection or records review, as applicable, for any windshield wiper motor that is found not to be affected by the requirements of this AD, re-identifying the part number is not required. Note 1: Boeing Alert Service Bulletin 737-30A1059, dated September 10, 2007; and Boeing Service Bulletin 737-30A1057, Revision 1, dated October 31, 2007; 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 (identified in the Rosemount service bulletin as the “power module”) has been previously replaced and for changing the part number. Note 2: Appendix A of Rosemount Aerospace Service Bulletin 2313M-347/2313M-348-30-01, dated June 30, 2006, identifies an incorrect serial number for Model Number 2313M-348-3. Serial number M252” should be M0252. Note 3: Rosemount Aerospace Service Bulletin 2313M-347/2313M-348-30-01, dated June 30, 2006, specifies marking affected parts with an approved opaque material per BAC5307, classification RO, with an approved permanent marking material; however, for the purposes of this AD, any permanent method of part marking is acceptable. 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 P/N 2313M-347-3 or P/N 2313M-348-3 (P/N 2313M347-3 or P/N 2313M348-3) 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; provided that the wiper motor serial number was legible for inspection purposes and the operational test specified in Step 3 in Work Packages 2 and 3 of the Accomplishment Instructions of Boeing Alert Service Bulletin 737-30A1057, Revision 1, dated October 31, 2007, was completed. 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 (P/N 2313M347-3 or P/N 2313M348-3) on any airplane. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, Seattle Airplane 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. Material Incorporated by Reference (k) You must use Boeing Alert Service Bulletin 737-30A1059, dated September 10, 2007; or Boeing Service Bulletin 737-30A1057, Revision 1, dated October 31, 2007, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207; telephone 206-544-9990; fax 206-766-5682; e-mail DDCS@boeing.com; Internet https://www.myboeingfleet.com. (3) You may review copies of the service information incorporated by reference at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington, on November 10, 2008. Ali Bahrami, Manager, Transport Airplane Directorate, Airplane Certification Service. [FR Doc. E8-27527 Filed 11-24-08; 8:45 am] BILLING CODE 4910-13-P

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.