AD 2000-03-07 Airworthiness Directives; Rolls-Royce plc RB211-524H-36 Series Turbofan Engines

Rolls-Royce plc (R-R) RB211-524H-36 series turbofan engines installed on but not limited to Boeing 767 series airplanes. Note 1: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines 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 (b) 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 prevent burn through of the combustor case due to combustor liner cracking, which can result in an engine fire and damage to the aircraft, accomplish the following: Installation of Improved Combustion Liner (a) Prior to further flight, install an improved combustion liner with a strengthened head and improved heat shields, in accordance with the Accomplishment Instructions of R-R Service Bulletin (SB) No. RB.211-72-9764, Revision 3, dated January 16, 1998. Alternative Methods of Compliance (b) 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, Engine Certification Office. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Engine Certification Office. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Engine Certification Office. No Ferry Flights (c) Special flight permits will not be issued. Incorporation by Reference (d) The actions required by this AD shall be performed in accordance with the following R-R SB:   Document No. Pages Revision Date RB.211-72-9764 1 3 Jan. 16, 1998.   2 Original Aug. 20, 1993.   3-6 3 Jan. 16, 1998.   7-10 Original Aug. 20, 1993.   11 3 Jan. 16, 1998.   12-30 Original Aug. 20, 1993. Total pages: 30. 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 Rolls-Royce plc, PO Box 31, Derby, England; telephone: International Access Code 011, Country Code 44, 1332-249428, fax International Access Code 011, Country Code 44, 1332-249223. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. (e) This amendment becomes effective on March 2, 2000. Issued in Burlington, Massachusetts, on February 7, 2000. Thomas A. Boudreau, Acting Manager, Engine and Propeller Directorate Aircraft Certification Service. [FR Doc. 00-3337 Filed 2-15-00; 8:45 am] BILLING CODE 4910-13-P