AD 98-05-11 Airworthiness Directives; Bombardier Model CL-215-6B11 (CL-215T) Series Airplanes

All Model CL-215-6B11 (CL-215T) series airplanes, certificated in any category. Note 1: This AD applies to each airplane 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 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 (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 detect internal engine fire within the intercompressor case (ICC); or to prevent air/oil from leaking into the ICC, which could result in such fire; accomplish the following: (a) Within 30 days after the effective date of this AD, accomplish either paragraph (a)(1) or (a)(2) of this AD. (1) Replace the switching valve-to-rear inlet case sealing air tube assembly with a tube assembly that includes an integral fire detector (ICC fire detector loop), in accordance with Pratt & Whitney Canada Service Bulletin PW100-72-21113, Revision 1, dated May 4, 1992; and modify the nacelle fire detection system in accordance with Canadair Alert Service Bulletin 215-A3030, Revision 1, dated April 16, 1992, or (2) Modify the No. 5 bearing air system in accordance with Pratt & Whitney Canada Service Bulletin PW100-72-21211, Revision 4, dated April 20, 1995. (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, New York Aircraft Certification Office (ACO), FAA, Engine and Propeller Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, New York ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the New York ACO. (c) 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. (d) The actions shall be done in accordance with Canadair Alert Service Bulletin 215-A3030, Revision 1, dated April 16, 1992; Pratt & Whitney Canada Service Bulletin PW100-72-21113, Revision 1, dated May 4, 1992; and Pratt & Whitney Canada Service Bulletin PW100-72- 21211, Revision 4, dated April 20, 1995. 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 Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centreville, Montreal, Quebec H3C 3G9, Canada; and Pratt & Whitney, 400 Main Street, East Hartford, Connecticut 06108. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Engine and Propeller Directorate, New York ACO, 10 Fifth Street, Third Floor, Valley Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Note 3: The subject of this AD is addressed in Canadian airworthiness directive CF-92-10R1, dated January 24, 1995. (e) This amendment becomes effective on March 23, 1998. Issued in Renton, Washington, on February 24, 1998. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 98-5347 Filed 3-5-98; 8:45 am] BILLING CODE 4910-13-U