AD 2008-06-03 Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800 and -900 Series Airplanes; and Model 757-200, -200PF, -200CB, and -300 Series Airplanes

Models named: 737-600, -700, -700C, -800, -900 series, 757-200, -200PF, -200CB, -300 series. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Boeing Model 737-600, -700, -700C, -800 and -900 series airplanes; and Boeing Model 757-200, -200PF, -200CB, and -300 series airplanes; certificated in any category; as identified in Boeing Alert Service Bulletins 737-28A1207, dated February 15, 2007, and 757-28A0088, dated January 25, 2007. Note 1: This AD requires revisions to certain operator maintenance documents to include new inspections and maintenance actions. Compliance with these limitations is required by 14 CFR 43.16 and 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these limitations, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 43.16 and 91.403(c), the operator must request approval for revision to the airworthiness limitations (AWLs) in the Boeing 737-600/700/700C/700IGW/800/900 Maintenance Planning Data (MPD) Document D626A001-CMR and the Boeing 757 MPD Document D622N001-9, as applicable, according to paragraph (i) of this AD.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Service Bulletin Reference (f) The term “service bulletin,” as used in this AD, means the Accomplishment Instructions of the following service bulletins, as applicable: (1) For Model 737-600, -700, -700C, -800 and -900 series airplanes: Boeing Alert Service Bulletin 737-28A1207, dated February 15, 2007; and (2) For Model 757-200, -200PF, -200CB, and -300 series airplanes: Boeing Alert Service Bulletin 757-28A0088, dated January 25, 2007. Inspection and Related Investigative/Corrective Actions (g) Within 60 months after the effective date of this AD: Inspect the applicable motor-operated valves (MOVs) to determine whether an MOV with the affected part number identified in the Accomplishment Instructions of the applicable service bulletin is installed. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the part can be conclusively determined from that review. Do all applicable related investigative and corrective actions before further flight. Do all actions in accordance with the Accomplishment Instructions of the applicable service bulletin. Revision of AWLs Section (h) Concurrently with the actions specified in paragraph (g) of this AD: Revise the AWLs section of the Instructions for Continued Airworthiness by incorporating the information specified in paragraphs (h)(1) and (h)(2) of this AD, as applicable. Accomplishing the revision in accordance with a later revision of the MPD document is an acceptable method of compliance if the revision is approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. (1) Section F., “AIRWORTHINESS LIMITATIONS—FUEL SYSTEM AWLs,” of Boeing 737-600/700/700C/700IGW/800/900 MPD Document D626A001-CMR, Section 9, Revision November 2006 R1, into the MPD to incorporate AWL No. 28-AWL-21, No. 28-AWL-22, and No. 28-AWL-24. (2) Section G., “AIRWORTHINESS LIMITATIONS—FUEL SYSTEM AWLs,” of Boeing 757 MPD Document D622N001, Section 9, Revision January 2007, into the MPD Document to incorporate AWL No. 28-AWL-23, No. 28-AWL-24, and No. 28-AWL-25. Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, Seattle ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with 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 (j) You must use the service information listed in Table 1 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124-2207, for a copy of this service information. You may review copies 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/cfr/ibr-locations.html. Table 1.—Material Incorporated by Reference Service information Revision Date Boeing 737-600/700/700C/700IGW/800/900 Maintenance Planning Data Document D626A001-CMR, Section 9 November 2006 R1 November 2006. Boeing 757 Maintenance Planning Data Document D622N001, Section 9 January 2007 January 2007. Boeing Alert Service Bulletin 737-28A1207 Original February 15, 2007. Boeing Alert Service Bulletin 757-28A0088 Original January 25, 2007. Issued in Renton, Washington, on February 28, 2008. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E8-4486 Filed 3-11-08; 8:45 am] BILLING CODE 4910-13-P

This AD results from a design review of the fuel tank systems. We are issuing this AD to prevent electrical energy from lightning, hot shorts, or fault current from entering the fuel tank through the actuator shaft, which could result in fuel tank explosions and consequent loss of the airplane.