AD 2002-22-06 Airworthiness Directives; Honeywell International, Inc., (Formerly AlliedSignal, Inc. and Textron Lycoming) LF507 and ALF502R Series Turbofan Engines

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

This airworthiness directive (AD) is applicable to Honeywell International, Inc., (formerly AlliedSignal, Inc. and Textron Lycoming) LF507 and ALF502R series turbofan engines with combustion chamber liner assembly part number (P/N) 2-131-520-03 installed. These engines are installed on, but not limited to, BAE Systems Avro 146 and BAE 146 series aircraft. Note 1: This 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 (e) 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.

Compliance with this AD is required as indicated, unless already done. To prevent separation of the combustor dome baffle from the combustion chamber liner assembly and the flow of hot combustor gases on oil and fuel lines which could result in an engine fire, an in-flight shutdown, and damage to the airplane, do the following: Removal Requirements (a) Within 250 cycles-in-service (CIS) after the effective date of this AD, remove from service engines that have combustion chamber liner assemblies, P/N 2-131-520-03, listed by serial number (SN) in Table 1 of this AD. Replace that SN combustion chamber liner assembly with a serviceable part. Table 1 follows: Table 1.—Affected Combustion Chamber Liner Assemblies Serial Nos. to be removed from service 990992700016. 990992700018 thru 990992700028. 990992700077 thru 990992700078. 990992700081. 990992700083. 990992700085 thru 990992700090. Initial and Repetitive Inspections (b) On engines that have combustion chamber liner assemblies with more than 2,000 CIS on the effective date of this AD, perform an initial borescope inspection of combustion chamber liner assembly P/N 2-131-520-03 within 500 CIS after the effective date of this AD in accordance with paragraphs 2(A)(1) through 2(A)(8) of the Accomplishment Instructions of Honeywell alert service bulletin (ASB) ALF/LF A72-1076, Revision 1, dated August 30, 2002. (c) Thereafter, at each successive 500 CIS, perform a borescope inspection of combustion chamber liner assembly P/N 2-131-520-03 in accordance with paragraphs 2(A)(1) through 2(A)(8) of the Accomplishment Instructions of Honeywell ASB ALF/LF A72-1076, Revision 1, dated August 30, 2002. Optional Terminating Action (d) Replacement of combustion chamber liner assembly, P/N 2-131-520-03, with the new improved durability combustion chamber liner assembly, P/N 2-131-520-04, constitutes terminating action to the borescope inspection requirements of paragraph (c) of this AD. Information regarding the replacement of combustion chamber liner assembly P/N 2-131-520-03 with P/N 2-131-520-04 can be found in Honeywell service bulletin ALF/LF 72-1078, dated June 28, 2002. Alternative Methods of Compliance (e) 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, Los Angeles Aircraft Certification Office (LAACO). Operators must submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, LAACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the LAACO. Special Flight Permits (f) Special flight permits may be issued in accordance with §§ 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 done. Documents That Have Been Incorporated by Reference (g) The initial and repetitive borescope inspections of combustion chamber liner assembly, PN 2-131-520-03, must be done in accordance with the Honeywell International, Inc. ASB ALF/LF A72-1076, Revision 1, dated August 30, 2002. 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 Honeywell International, Inc. (formerly AlliedSignal, Inc. and Textron Lycoming), Attn: Data Distribution, M/S 64-3/2101-201, P.O. Box 29003, Phoenix, AZ 85038-9003, telephone: (602) 365-2493; fax: (602) 365-5577. 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. Effective Date (h) This amendment becomes effective on November 18, 2002. Issued in Burlington, Massachusetts, on October 22, 2002. Francis A. Favara, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 02-27433 Filed 10-31-02; 8:45 am] BILLING CODE 4910-13-P