2008-22-04: Fuel system

2008-22-04 Bombardier, Inc. (Formerly Canadair): Amendment 39-15699. Docket No. FAA-2008-0623; Directorate Identifier 2008-NM-089-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 5, 2008. Affected ADs (b) This AD supersedes AD 2008-06-01, Amendment 39-15413. Applicability (c) This AD applies to all Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, all serial numbers. Note 1: This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (h)(1) of this AD. The request should include a description of changes to the required inspections that will ensure the continued operational safety of the airplane. Subject (d) Air Transport Association (ATA) of America Code 28: Fuel. Reason (e) The mandatory continuing airworthiness information (MCAI) states: Bombardier Aerospace has completed a system safety review of the aircraft fuel system against fuel tank safety standards introduced in Chapter 525 of the Airworthiness Manual through Notice of Proposed Amendment (NPA) 2002-043. The identified non-compliances were then assessed using Transport Canada Policy Letter No. 525-001, to determine if mandatory corrective action is required. The assessment showed that supplemental maintenance tasks [for the fuel tank wiring harness installation, and the hydraulic system No. 3 temperature transducer, among otheritems] are required to prevent potential ignition sources inside the fuel system, which could result in a fuel tank explosion. Revision has been made to Canadair Regional Jet Models CL-600-2C10, CL-600-2D15 and CL-600- 2D24 Maintenance Requirements Manual, CSP B-053, Part 2, Section 3 "Fuel System Limitations'' to introduce the required maintenance tasks. The corrective action is revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate new limitations for fuel tank systems. Restatement of Certain Requirements of AD 2008-06-01 (f) Unless already done, within 60 days after April 16, 2008 (the effective date of AD 2008-06-01), revise the ALS of the Instructions for Continued Airworthiness to incorporate the inspection requirements in Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, dated July 20, 2007; or Revision 10, dated March 20, 2008. New Requirements of This AD: Actions and Compliance (g) Unless already done, do the following actions. (1) For task numbers 24-90-00-601, 24-90-00-602, 28-00-00-601, 28-11-23-601, 28-11-23-602, 28-12-13-601, 29-30-00-601, and 29-30- 00-602 identified in Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, dated July 20, 2007; or Revision 10, dated March 20, 2008: The initial compliance times start at the later of the applicable "Threshold'' and "Grace Period'' times specified in Table 1 of this AD, and the repetitive limitation tasks must be accomplished thereafter at the applicable interval specified in Revision 9 or Revision 10 of the Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, except as provided by paragraph (g)(2) and (h)(1) of this AD. Table 1--Initial InspectionsCompliance Time (whichever occurs later) Description Threshold Grace Period Tasks with limiting intervals of 8,000 flight hours Before the accumulation of 8,000 total flight hours Within 2,000 flight hours after the effective date of this AD Tasks with limiting intervals of 20,000 flight hours Before the accumulation of 20,000 total flight hours Within 6,000 flight hours after the effective date of this AD Tasks with limiting intervals of 30,000 flight hours Before the accumulation of 30,000 total flight hours Within 6,000 flight hours after the effective date of this AD (2) After accomplishing the actions specified in paragraph (g)(1) of this AD, no alternative inspections/limitation tasks or inspection/limitation task intervals may be used unless the inspection/limitation task or inspection/limitation task interval is approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (h)(1) of this AD. FAA AD Differences Note 2: This AD differs from the MCAI and/or service information as follows: No differences. Other FAA AD Provisions (h) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Rocco Viselli, Aerospace Engineer, Airframe and Propulsion Branch, ANE-171, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7331; fax (516) 794-5531. 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. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. (3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120- 0056. Related Information (i) Refer to MCAI Canadian Airworthiness Directive CF-2007-28, dated November 22, 2007; and Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, dated July 20, 2007; or Revision 10, dated March 20, 2008; for related information. Material Incorporated by Reference (j) You must use Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, dated July 20, 2007; or Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 10, dated March 20, 2008; 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 Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 10, dated March 20, 2008, under 5 U.S.C. 552(a) and 1 CFR part 51. (2) The Director of the Federal Register previously approved the incorporation by reference of Section 3, "Fuel System Limitations,'' of Part 2 of Bombardier CL-600-2C10, CL-600-2D15, and CL-600-2D24 Maintenance Requirements Manual CSP B-053, Revision 9, dated July 20, 2007, on April 16, 2008 (73 FR 13098, March 12, 2008). (3) For service information identified in this AD, contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855- 7401; e-mail [email protected]; Internet http:// www.bombardier.com. (4) 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.