Tetsuyuki Furukawa

Document ID: FAA-2010-0596-0004
Document Type: Public Submission
Agency: Federal Aviation Administration
Received Date: September 01 2010, at 12:00 AM Eastern Daylight Time
Date Posted: September 2 2010, at 12:00 AM Eastern Standard Time
Comment Start Date: July 14 2010, at 12:00 AM Eastern Standard Time
Comment Due Date: September 13 2010, at 11:59 PM Eastern Standard Time
Tracking Number: 80b40e68
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This is comment on Rule

Airworthiness Directives: Pratt and Whitney PW4000 Series Turbofan Engines

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This AD requires to remove engine every 7200cycles. In Japan we use PW4158 A300-600 for domestic route, some engine may reach 7000cycle above. "Cost of compliance" addresses only for performing inspection and HPC drum rotor disk assembly. "Cost of compliance" should address engine removal labor and engine disassembly labor. There are many spec for FPI. NPRM says only "FPI" this is good for operator. Please remain to use "FPI". If FAA need to change to refer spec, "equivalent method" should be followed specification.