2009-11-02: HPC 4-9 spools

2009-11-02 CFM International S.A.: Amendment 39-15912. Docket No. FAA-2008-1245; Directorate Identifier 2008-NE-27-AD. Effective Date (a) This airworthiness directive (AD) becomes effective June 23, 2009. Affected ADs (b) None. Applicability (c) This AD applies to CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines with a high-pressure compressor (HPC) 4-9 spool that has a part number (P/N) and serial number (SN) specified in Table 1 of this AD, installed. These engines are installed on, but not limited to, Airbus A319, A320, and A340 airplanes and Boeing 737 airplanes. Table 1--HPC 4-9 Spools by P/N and SN HPC 4-9 Spool P/N HPC 4-9 Spool SN 9513M93G08 MPON1641 1590M29G01 GWN0087D 1590M29G01 GWN00MG2 1590M29G01 GWN011LG 1590M29G01 GWN01285 1590M29G01 GWN021JC 1590M29G01 GWNFY923 1590M29G01 GWNFY924 1590M29G01 GWNPA756 1590M29G01 GWNPG015 1590M29G01 GWNWC515 1590M29G01 GWNWR523 1590M29G01 GWNWT631 1590M29G01 GWNYC495 1588M89G03 GWN03K1R 1588M89G03 GWN03N61 1588M89G03 GWN03N6C 1588M89G03 GWN040L9 1588M89G03 GWN0468N 1588M89G03 GWN05AM0 1277M97G02 GWNE1298 1277M97G02 GWNE1564 1277M97G02 GWNJ7891 1277M97G02 GWNT4187 9513M93G11 GWNB3373 1358M94G01 GWNU0169 Unsafe Condition (d) This AD results from reports of certain HPC 4-9 spools that Propulsion Technology LLC (PTLLC) improperly repaired and returned to service. We are issuing this AD to prevent cracking of the HPC 4- 9 spool, which could result in possible uncontained failure of the spool and damage to the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Removing the HPC 4-9 Spool (f) Remove HPC 4-9 spools from service that have a P/N and S/N listed in Table 1 ofthis AD before accumulating 8,900 cycles-since- repair at PTLLC or within 1,100 cycles from the effective date of this AD, which ever occurs later. Installation Prohibition (g) After the effective date of this AD, do not install any engine with an HPC 4-9 spool that has a P/N and SN specified in Table 1 of this AD. Alternative Methods of Compliance (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) Contact Stephen K. Sheely, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: stephen.k.sheely@faa.gov; telephone (781) 238-7750; fax (781) 238- 7199, for more information about this AD. Material Incorporated by Reference (j) None.