Airworthiness Directive · Amendment 39-17673 · General Electric Company Turbofan Engines
General Electric Company Turbofan Engines
This AD applies to General Electric Company (GE) GE90-110B1 and -115B turbofan engines with variable bypass valve (VBV) actuator fuel supply tube, part number (P/N) 2165M22P01, installed.
We are adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GE90-110B1 and -115B turbofan engines. This AD was prompted by multiple events of a leaking variable bypass valve (VBV) actuator fuel supply tube. This AD requires replacement of this VBV actuator fuel supply tube with a part eligible for installation. We are issuing this AD to prevent failure of the affected fuel supply tube, fuel leakage, engine fire, and damage to the airplane.
(1) Comply with this AD within the compliance times specified, unless already done.
(2) At the next shop visit, after the effective date of this AD, replace the VBV actuator fuel supply tube, P/N 2165M22P01, with a part eligible for installation.
For the purpose of this AD, a shop visit is the induction of an engine into the shop for maintenance or overhaul. The separation of engine flanges solely for the purposes of transporting the engine without subsequent engine maintenance does not constitute an engine shop visit.
After the effective date of this AD, do not install any VBV actuator fuel supply tube, P/N 2165M22P01, onto any engine.
