AD 2009-14-04 Airworthiness Directives; Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes

Models named: 737-100, -200, -200C, -300, -400, -500 series. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, certificated in any category; as identified in Boeing Service Bulletin 737-28-1241, Revision 1, dated August 31, 2007.

Comply with this AD within the compliance times specified, unless already done. Deactivating or Modifying the Outboard Landing Lights (f) For Model 737-300, -400, and -500 series airplanes identified in Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006: Within 180 days after the effective date of this AD, accomplish the actions specified in either paragraph (f)(1) or (f)(2) of this AD. Accomplishing the applicable actions required by paragraph (g) of this AD terminates the requirements of this paragraph. (1) Deactivate the outboard landing lights by accomplishing all of the actions specified in Part 1 of the Accomplishment Instructions of Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006. Note 1: The Master Minimum Equipment List (MMEL) prohibits dispatching an airplane for night operations with deactivated outboard landing lights in the event that either of the inboard landing lights fail. Operators should note that, if the outboard landing lights are deactivated in accordance with Part 1 of Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006, there is no MMEL relief allowing for this configuration for night operations should any inboard landing light fail. (2) Modify the wiring to the outboard landing lights by accomplishing all of the actions specified in Part 2 of the Accomplishment Instructions of Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006. Inspection and Replacements (g) For all airplanes: Within 60 months after the effective date of this AD, do the applicable actions specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, by accomplishing all of the applicable actions specified in the Accomplishment Instructions of Boeing Service Bulletin 737-28-1241, Revision 1, dated August 31, 2007. For Model 737-300, -400, and -500 series airplanes identified in Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006, accomplishing the applicable actions required by this paragraph terminates the requirements of paragraph (f) of this AD. (1) Replace the wire bundles for the landing lights and fuel shutoff valves with new, redesigned wire bundles, and do the related investigative, other specified, and corrective actions, as applicable. The related investigative, other specified, and corrective actions must be done before further flight after the replacement. (2) Do a detailed inspection for any broken, damaged, or missing fairleads, any damaged or missing grommets, and any chafed or damaged wires or wire bundles in the four electrical junction boxes of the main wheel well, and do the applicable corrective actions. The corrective actions must be done before further flight after the inspection. (3) Replace the electrical connectors and backshell clamps with new, improved electrical connectors and backshell clamps, as applicable. Credit for Actions Done According to Previous Issue of Service Bulletin (h) For airplanes identified as Groups 1 and 2 in Boeing Service Bulletin 737-28-1241, Revision 1, dated August 31, 2007: Actions done before the effective date of this AD in accordance with Boeing Service Bulletin 737-28-1241, dated April 7, 2006, are acceptable for compliance with the requirements of paragraph (g) of this AD. (i) For all airplanes: Actions done before the effective date of this AD in accordance with Part 2 of the Accomplishment Instructions of Boeing Service Bulletin 737-28-1241, dated April 7, 2006, are acceptable for compliance with the requirements of paragraph (g)(2) of this AD. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, Seattle Aircraft Certification Office (ACO), FAA, ATTN: Stephen Oshiro, Aerospace Engineer, Systems and Equipment Branch, ANM-130S, FAA, Seattle ACO, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 917-6480; 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 Service Bulletin 737-28-1241, Revision 1, dated August 31, 2007; and Boeing Alert Service Bulletin 737-33A1140, dated May 22, 2006; as applicable; 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, 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. (3) You may review copies of the 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 or 425-227-1152. (4) You may also review copies of the service information that is incorporated by reference 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, WA, on June 11, 2009. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E9-15405 Filed 7-7-09; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of uncommanded engine shutdowns and burned and damaged wire bundles associated with the outboard landing lights and engine fuel shutoff valves. This AD also results from reports of damaged and missing grommets and broken and damaged fairleads in the electrical junction boxes of the main wheel well. We are issuing this AD to prevent a hot short between the outboard landing light and fuel shutoff valve circuits, which could result in an uncommanded engine shutdown. We are also issuing this AD to prevent corrosion of the electrical connectors of the wing rear spars, which could result in short circuits and consequent incorrect functioning of airplane systems needed for safe flight and landing.