2008-23-14: Bolts

2008-23-14 BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft): Amendment 39-15735. Docket No. FAA- 2008-0887; Directorate Identifier 2007-NM-336-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 26, 2008. Affected ADs (b) None. Applicability (c) This AD applies to all BAE Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A series airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes; certificated in any category. Subject (d) Air Transport Association (ATA) of America Code 53: Fuselage. Reason (e) The mandatory continuing airworthiness information (MCAI) states: During inspection of undercarriage main beam sidestays, bolts attaching the undercarriage main beam sidestay to frame 29 were found with the heads of the bolts sheared off. Loose bolt assemblies were also found. If sheared or loose bolts are not detected and replaced, a possible consequence is the collapse of the main landing gear. For the reasons described above, this Airworthiness Directive (AD) requires a one-time [rotating eddy current] inspection of the bolt bores and bore dimensions and the installation of replacement bolts, as necessary. Corrective actions include contacting BAE Systems (Operations) Limited for repair instructions and repair, if necessary. Actions and Compliance (f) Unless already done, do the following actions. (1) Within 4,000 flight cycles or 5 years, whichever occurs first after the effective date of this AD, perform the inspections to detect defects (including sheared or loose bolts) and do the bolt replacements in accordance with the instructions of paragraphs 2.C.(1) through 2.C.(3), and paragraphs 2.D.(1) through 2.D.(3), of the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-194, dated January 10, 2007, except as required by paragraphs (f)(2), (f)(3), and (f)(4) of this AD. (2) If any defect is found during the inspection specified in paragraph (f)(1) of this AD, before further flight, replace the affected bolts in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53- 194, dated January 10, 2007, except as required by paragraphs (f)(3) and (f)(4) of this AD. (3) For airplanes on which replacement parts are not available during the replacement specified in paragraph (f)(2) of this AD, do the actions in paragraphs (f)(3)(i) and (f)(3)(ii) of this AD in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-194, dated January 10, 2007. (i) Before further flight, temporarily reinstall removed oversized bolts, provided the bolts are serviceable. (ii) Within 2,000 flight cycles after doing the inspection required by paragraph (f)(1) of this AD, replace all temporary oversized bolts that were installed inaccordance with paragraph (f)(3)(i) of this AD. (4) Where BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-194, dated January 10, 2007, specifies to contact BAE Systems (Operations) Limited if any defect is found in the second oversize fastener bore, before further flight, contact BAE Systems (Operations) Limited for repair instructions and do the repair. FAA AD Differences Note 1: This AD differs from the MCAI and/or service information as follows: No differences. Other FAA AD Provisions (g) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, 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: Todd Thompson, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1175; fax (425)227-1149. 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 (h) Refer to MCAI European Aviation Safety Agency Airworthiness Directive 2007-0277, dated November 5, 2007; and BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-194, dated January 10, 2007; for related information. Material Incorporated by Reference (i) You must use BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-194, dated January 10, 2007, 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 BAE Systems Regional Aircraft, 13850 McLearen Road, Herndon, Virginia 20171; telephone 703-736-1080; e-mail [email protected]; Internet http://www.baesystems.com/Businesses/RegionalAircraft/ index.htm. (3) 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/code_of_ federal_regulations/ibr_locations.html.