AD 2003-17-09 Airworthiness Directives; Aerospatiale Model ATR42-500 and ATR72 Series Airplanes

Models named: ATR42-500, ATR72 series. Read the applicability below — it usually turns on serial or part numbers too.

Model ATR42-500 and ATR72 series airplanes, certificated in any category, on which ATR Modification 1447 has been incorporated and ATR Modification 4840 has not been incorporated.

Required as indicated, unless accomplished previously. To prevent chafing of a wire bundle in the area of electrical rack 90VU, which could result in an electrical short and potential loss of several functions essential for safe flight, accomplish the following: Modification (a) Within 500 flight hours or 6 months after the effective date of this AD, whichever occurs first: Do a detailed inspection to detect damage of the wire bundles in the area of electrical rack 90VU, ensure that the conduit around the wire bundles is in the proper position, and install a clamp between the wire bundles and the carbon shelves structure (93VU, 94VU, 95VU); in accordance with Avions de Transport Regional Service Bulletin ATR42-92-0007 (for Model ATR42-500 series airplanes) or ATR72-92-1007 (for Model ATR72 series airplanes), both dated January 25, 2002, as applicable. Repair any damaged wiring before further flight in accordance with Chapter 20-27-17 of the applicable ATR Aircraft Schematic Manual. 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.” Alternative Methods of Compliance (b) 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 (c) The actions shall be done in accordance with Avions de Transport Regional Service Bulletin ATR42-92-0007, dated January 25, 2002, or Avions de Transport Regional Service Bulletin ATR72-92-1007, dated January 25, 2002, as applicable; and Chapter 20-27-17, dated October 1, 1995, of Avions de Transport Regional ATR42 Aircraft Schematic Manual, or Chapter 20-27-17, dated October 1, 1995 of the Avions de Transport Regional ATR72 Aircraft Schematic Manual, as applicable. The Avions de Transport Regional ATR42 Aircraft Schematic Manual contains the following list of effective pages:   Page Number Date shown on page List of Effective Pages 1-9 April 2001. (Only the title page of the Avions de Transport Regional ATR42 Aircraft Schematic Manual references the airplane model; no other page contains this information.) The Avions de Transport Regional ATR72 Aircraft Schematic Manual contains the following list of effective pages:   Page Number Date shown on page List of Effective Pages 1-9 April 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 Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. 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 French airworthiness directives 2002-090-092(B) and 2002-091-066(B), both dated February 20, 2002. Effective Date (d) This amendment becomes effective on October 7, 2003. Issued in Renton, Washington, on August 15, 2003. Kyle L. Olsen, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 03-21413 Filed 8-29-03; 8:45 am] BILLING CODE 4910-13-P