AD 98-23-13 Airworthiness Directives; British Aerospace Model Viscount 744, 745, 745D, and 810 Series Airplanes

Models named: Viscount 744, 745, 745D series, Viscount 810 series. Read the applicability below — it usually turns on serial or part numbers too.

Model Viscount 744, 745, and 745D series airplanes, on which British Aerospace Modification D3227 has not been accomplished; and Model Viscount 810 series airplanes, on which British Aerospace Modification FG 2103 has not been accomplished; certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Required as indicated, unless accomplished previously. To detect and correct cracking of the eye end fittings of the outboard engine lower support, which could result in reduced structural integrity of the engine nacelle support structures, accomplish the following: (a) Perform an eddy current inspection to detect cracking or corrosion of the eye end fittings of the outboard engine lower support, or of the bore of the taper pin holes, in accordance with the Accomplishment Instructions of British Aerospace Preliminary Technical Leaflet (PTL) No. 326, Issue 2, including Appendices 1 and 2, all dated December 1, 1994 (for Model Viscount 744, 745, and 745D series airplanes); or PTL 197, Issue 3, including Appendices 1 and 2, all dated November 20, 1993 (for Model Viscount 810 series airplanes); at the applicable time specified in either paragraph (a)(1) or (a)(2) of this AD. Thereafter, repeat the inspection at intervals not to exceed 900 landings. (1) For Model Viscount 744, 745, and 745D series airplanes: Inspect within 3 months after the effective date of this AD. (2) For Model Viscount 810 series airplanes: Inspect within 900 landings after the last inspection performed in accordance with PTL 197, Issue 2, dated July 10, 1992; or within 3 months after the effective date of this AD; whichever occurs later. (b) If any cracking is found during any inspection performed in accordance with paragraph (a) of this AD, prior to further flight, repair in accordance with a method approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; or the Civil Aviation Authority (or its delegated agent). [[Page 63132]] (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, International Branch, ANM-116. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. (d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The inspections shall be done in accordance with the following British Aerospace Regional Aircraft Preliminary Technical Leaflets, which contain the specified effective pages: ---------------------------------------------------------------------------------------------------------------- Preliminary technical leaflet referenced Page number Revision level and date shown on page shown on page Date shown on page ---------------------------------------------------------------------------------------------------------------- PTL 326, Issue 2, December 1, 1994...... 1-6 2 December 1, 1994. APPENDIX 1 1-6 2 December 1, 1994. APPENDIX 2 1-6 2 December 1, 1994. PTL 197, Issue 3, November 20, 1993..... 1-8 3 November 20, 1993. APPENDIX 1 1-6 3 November 20, 1993. APPENDIX 2 1-7 Original November 20, 1993. ---------------------------------------------------------------------------------------------------------------- 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 Limited, Chadderton Division, Engineering Support, Greengate, Middleton, Manchester M24 1SA, England. 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. (f) This amendment becomes effective on December 17, 1998. Issued in Renton, Washington, on November 3, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-30053 Filed 11-10-98; 8:45 am] BILLING CODE 4910-13-P