Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Raytheon Aircraft Company (Raytheon), Model 390, Premier 1 airplanes. This proposed AD would require you to install a kit to correct chafing conditions in the powerplant left hand and right hand engine installations. This proposed AD results from reports of inadequate left hand and right hand engine assembly cable, wire, and hose routing clearance. We are issuing this proposed AD to detect and correct chafing conditions in the engine installation, which could result in leaking flammable fluids near an ignition source. This failure could lead to fire damage or loss of airplane control.