AD 2005-05-12 Airworthiness Directives; BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes

Models named: 4101. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to all BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft) Model 4101 airplanes, certificated in any category.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection and Corrective Actions (f) Within 12 months after the effective date of this AD, do a detailed inspection of the aft fuselage frames for any discrepancies i.e., corrosion, soft spots, and suspected corrosion), and any applicable corrective actions, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41-53-051, dated January 25, 2002; or Revision 1, dated May 2, 2003; except as provided by paragraphs (g) and (i) of this AD. Do any applicable corrective action before further flight. Note 1: For the purposes of this AD, a detailed inspection is “an intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required.” (g) If any corrosion outside the limits defined in the service bulletin is detected: Before further flight, repair the corrosion according to a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the Civil Aviation Authority (or its delegated agent). Repetitive Inspection (h) Repeat the inspection and do applicable corrective actions required by paragraph (f) of this AD at intervals not to exceed 24 months. No Reporting (i) Although the service bulletins referenced in this AD specify to submit inspection reports to the manufacturer, this AD does not include that requirement. Alternative Methods of Compliance (AMOCs) (j) The Manager, International Branch, ANM-116, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Related Information (k) British airworthiness directive 003-01-2002 also addresses the subject of this AD. Material Incorporated by Reference (l) You must use BAE Systems (Operations) Limited Service Bulletin J41-53-051, dated January 25, 2002; or BAE Systems (Operations) Limited Service Bulletin J41-53-051, Revision 1, dated May 2, 2003; to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approves the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of the service information, contact British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, Virginia 20171. For information on the availability of this material at the National Archives and Records Administration (NARA), call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. You may view the AD docket at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW, room PL-401, Nassif Building, Washington, DC. Issued in Renton, Washington, on February 28, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05-4414 Filed 3-10-05; 8:45 am] BILLING CODE 4910-13-P

This AD was prompted by reports of corrosion found on the aft fuselage frames due to the ingress of water or liquid. We are issuing this AD to detect and correct corrosion of the aft fuselage frames, which could result in reduced structural integrity of the fuselage.