NTSB Recommends Safety Changes On Thousands Of Boeing Jets

Boeing is set to modify thousands of its 737 Next Generation jets following a deadly accident involving a Southwest Airlines plane in April 2018. The incident, caused by a fan blade breaking mid-flight, led to a fatality and prompted the NTSB to recommend redesigning the engine's outer covering. Boeing plans to implement these changes once approved by the FAA. Additionally, Boeing is addressing safety concerns with its 737 Max planes after two fatal crashes.

How many jets are currently in service that may require changes according to the NTSB?

What is Boeing's response to the NTSB's recommendations?