Airworthiness directives › 2016-05-07
AD 2016-05-07 Airworthiness Directives; Engine Alliance Turbofan Engines
Applicability*9
This AD applies to Engine Alliance (EA) GP7270 turbofan engines with one or both of the following installed: (1) A high-pressure compressor (HPC) rotor stage 2 to 5 spool, part number (P/N) 382-104-807-0, with a serial number (S/N) listed in EA Service Bulletin (SB) EAGP7-72-327, dated July 21, 2015; or (2) An HPC rotor stage 7 to 9 spool, P/N 2031M90G04, 2031M90G05, or 2031M90G07, with an S/N listed in EA SB EAGP7-72-328, dated July 21, 2015.
Compliance
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: ANE-AD-AMOC@faa.gov.
Required actions
For more information about this AD, contact Kyle Gustafson, Aerospace Engineer, Engine & Propeller Directorate, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7183; fax: 781-238-7199; email: kyle.gustafson@faa.gov.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. Within 30 days after the effective date of this AD or before accumulating 2,100 engine cycles since the last disassembly of the compressor module of the engine, whichever occurs later: (1) For engines with an HPC rotor stage 2 to 5 spool, P/N 382-104-807-0, installed with an S/N listed in EA SB EAGP7-72-327, dated July 21, 2015, do the following: (i) Remove from service the HPC rotor stage 2 to 5 spool and replace with a part eligible for installation. (ii) Remove from service the honeycomb cartridges on the HPC stage 5 vanes and replace with parts eligible for installation. (2) For engines with an HPC rotor stage 7 to 9 spool, P/N 2031M90G04, 2031M90G05, or 2031M90G07 installed with an S/N listed in EA SB EAGP7-72-328, dated July 21, 2015, do the following: (i) Remove from service the HPC rotor stage 7 to 9 spool and replace with a part eligible for installation. (ii) Remove from service the honeycomb cartridges on the HPC stage 6, stage 7, and stage 8 vanes and replace with parts eligible for installation.
Affected ADs
None.
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