2004-01-07: Inner webs and flanges at frames

2004-01-07 BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft): Amendment 39-13421. Docket 2002-NM- 144-AD. Applicability: Model BAe 146 and Avro 146-RJ series airplanes, certificated in any category; except those airplanes on which either BAe Modification HCM30514A or HCM30514C, and either HCM30514B or HCM30514D, have been accomplished. Compliance: Required as indicated, unless accomplished previously. To detect and correct corrosion and cracking of the inner webs and flanges at frames 15, 18, 41, and 43, which could result in reduced structural integrity of the airplane, accomplish the following: Inspection (a) Except as provided by paragraph (c) of this AD: Do a detailed inspection of frames 15, 18, 41, and 43 (including any applicable repair) by accomplishing all actions specified in the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-165, dated December 11, 2001. Do the inspection at the applicable time specified in paragraph (b) of this AD. Note 1: For the purposes of this AD, a detailed inspection is defined as: "An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required." Compliance Times (b) Do the inspection required by paragraph (a) of this AD at the applicable time specified in paragraph D., "Compliance," of the service bulletin, except where the service bulletin specifies "time period from first flight" or "years of age," this AD establishes the thresholds in terms of years after the date of issuance of the original Airworthiness Certificate or the date of issuance of the Export Certificate of Airworthiness, whichever is earlier. Where the service bulletin specifies compliance times relative to the date of the service bulletin, this AD requires compliance times relative to the effective date of this AD. Corrective Actions (c) If any discrepancy is found during any inspection required by paragraph (a) of this AD, before further flight, accomplish the applicable repair in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-165, dated December 11, 2001. If the service bulletin specifies to contact the manufacturer for appropriate action, before further flight, repair per a method approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; or the Civil Aviation Authority (or its delegated agent). Submission of Inspection Results Not Required (d) Although the service bulletin referenced in this AD specifies to submit information to the manufacturer, this AD doesnot include such a requirement. Alternative Methods of Compliance (e) In accordance with 14 CFR 39.19, the Manager, International Branch, ANM-116, FAA, is authorized to approve alternative methods of compliance for this AD. Incorporation by Reference (f) Unless otherwise specified in this AD, the actions shall be done in accordance with BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-165, dated December 11, 2001. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, Virginia 20171. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Note 2: The subject of this AD is addressed in British airworthiness directive 004-12-2001. Effective Date (g) This amendment becomes effective on February 11, 2004.