AD 2008-23-09 Airworthiness Directives; Boeing Model 727-200 and 727-200F Series Airplanes; 737-200, 737-200C, 737-300, and 737-400 Series Airplanes; 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SR, and 747SP Series Airplanes; 757-200, 757-200CB, and 757-200PF Series Airplanes; and 767-200 and 767-300 Series Airplanes

Models named: 727-200, 727-200F series, 747-400 series. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Boeing airplanes, certificated in any category, specified in paragraphs (c)(1) and (c)(2) of this AD. (1) Boeing airplanes listed in Table 1 of this AD, having an original standard Airworthiness Certificate or original Export Certificate of Airworthiness issued between July 1981 and December 1988 inclusive. Table 1—Applicability of Certain Airplanes   Model 727-200 and 727-200F series airplanes. 737-200, 737-200C, 737-300, and 737-400 series airplanes. 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SR, and 747SP series airplanes. 757-200, 757-200CB, and 757-200PF series airplanes. 767-200 and 767-300 series airplanes. (2) Boeing Model 747-400 series airplanes, serial numbers 23719, 23720, 23814, 23816, 23817, 23818, 23819, 23820, 23999, 24061, and 24062.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Replacement (f) Except as provided in paragraph (g) of this AD, within 96 months after the effective date of this AD, do the actions specified in paragraph (f)(1) or (f)(2) of this AD. (1) Remove all insulation blankets from the pressurized areas of the fuselage and install new insulation blankets using a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA. The new insulation blankets must comply with 14 Code of Federal Regulations (CFR) 25.856(a). The areas where the affected insulation blankets are installed include, but are not limited to, the following areas: (i) Crown area of the airplane; (ii) Areas behind flight deck panels and circuit breaker panels; (iii) Areas behind sidewalls, lavatories, closets, and galleys; (iv) Cargo compartment areas; (v) Air ducting; (vi) Waste and water tubing; and (vii) Areas attached to the underside of floor panels. (2) Remove the existing fuselage insulation blankets and install new insulation blankets, in accordance with the Accomplishment Instructions of the applicable service bulletin specified in Table 2 of this AD. Table 2—Boeing Special Attention Service Bulletins Boeing Special Attention Service Bulletin— Dated— For model— (i) 727-25-0300 April 30, 2008 727-200 and -200F series airplanes. (ii) 737-25-1572 April 30, 2008 737-200, 737-200C, 737-300, and 737-400 series airplanes. (iii) 747-25-3429 April 30, 2008 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747SP, and 747SR series airplanes. (iv) 757-25-0295 April 30, 2008 757-200, 757-200CB, and 757-200PF series airplanes. (v) 767-25-0411 April 30, 2008 767-200 and 767-300 series airplanes. Exception (g) The actions described in paragraph (f) are not required for any insulation blanket that is determined not to be constructed of AN-26, using an identification method approved by the Manager, Seattle Aircraft Certification Office (ACO), or in accordance with Appendix A of the applicable service bulletin specified in Table 2 of this AD. Note 1: Insulation material that is part-marked with a date of manufacture indicating that it was manufactured before July 1981 or after December 1988 is not constructed of AN-26. Parts Installation (h) As of the effective date of this AD, no person may install any insulation blanket constructed of AN-26 as a replacement unless it has been modified to comply with 14 CFR 25.856(a), in accordance with a method approved by the Manager, Seattle ACO. Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, Seattle ACO, ATTN: Shannon Lennon, 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) 917-6436; fax (425) 917-6590; 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 applicable service information contained in Table 3 of this AD 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 that is 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 . Table 3—Material Incorporated by Reference Boeing Special Attention Service Bulletin— Dated— 727-25-0300 April 30, 2008. 737-25-1572 April 30, 2008. 747-25-3429 April 30, 2008. 757-25-0295 April 30, 2008. 767-25-0411 April 30, 2008. Issued in Renton, Washington, on October 24, 2008. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E8-26352 Filed 11-7-08; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of in-flight and ground fires on certain airplanes manufactured with insulation blankets covered with a specific polyethyleneteraphthalate (PET), ORCON Orcofilm® AN-26 (all variants, including AN-26, AN-26A, and AN-26B), hereafter referred to as “AN-26,” which may contribute to the spread of a fire when ignition occurs from sources such as electrical arcing or sparking. We are issuing this AD to ensure that insulation blankets constructed of AN-26 are removed from the fuselage. Such insulation blankets could ignite and propagate a fire that is the result of electrical arcing or sparking.