Airworthiness Directive · Amendment 39-14859 · CFM International, S.A. CFM56 Series Turbofan Engines
CFM International, S.A. CFM56 Series Turbofan Engines
This AD applies to CFM International CFM56-2 series, -3 series, -5 series, and -7B series engines with fuel filters, Western Filter part numbers (P/Ns) WF337661 and WF337017 and PTI Technologies P/Ns 7595983-101 and 7588133, installed. These engines are installed on, but not limited to, Airbus A320 and A340 series airplanes, Boeing DC8-71 series, -72 series, and -73 series airplanes, and Boeing 737 series airplanes.
The FAA is adopting a new airworthiness directive (AD) for certain CFM International CFM56 Series turbofan engines. This AD requires replacing certain fuel filters manufactured under parts manufacturer approvals (PMA). This AD results from 12 reports of failed fuel filters. We are issuing this AD to prevent the loss of engine thrust that could result in loss of control during takeoff or landing.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
For CFM56-7B engines, within 600 flight hours or 60 days after the effective date of this AD, whichever occurs first, replace fuel filter, Western Filter P/Ns WF337661 or WF337017 and PTI Technologies P/Ns 7595983-101 or 7588133, with a filter that has a P/N not listed in this AD.
For CFM56-2 series, -3 series, and -5 series engines, at the next filter change or 4,000 flight hours, whichever occurs first, after the effective date of this AD, replace fuel filter, Western Filter P/Ns WF337661 or WF337017 and PTI Technologies P/Ns 7595983-101 or 7588133, with a filter that has a P/N not listed in this AD.
After the effective date of this AD, do not install any fuel filter, Western Filter P/Ns WF337661 or WF337017 or PTI Technologies P/Ns 7595983-101 or 7588133.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
