Summary
The FAA proposes to adopt a new airworthiness directive (AD) for GE CF34-1A, CF34-3A, and CF34-3B series turbofan engines. This proposed AD would require: Removing from service certain part number (P/N) and serial number (SN) fan blades within compliance times specified in this proposed AD, inspecting the fan blade abradable rub strip on certain engines for wear, inspecting the fan blades on certain engines for cracks, and inspecting the aft actuator head hose fitting for correct position, and if necessary repositioning. This proposed AD results from a report of an under-cowl fire, and a failed fan blade. We are proposing this AD to prevent failure of certain P/N and SN fan blades and aft actuator head hoses, which could result in an under-cowl fire and subsequent damage to the airplane.