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February 24, 2021

FAA Issues Emergency AD On PW4000 Equipped Aircraft

Requires U.S. Operators To Inspect These Engines Before Further Flight

The FAA has issued an anticipated Emergency Airworthiness Directive (AD) that requires U.S. operators of airplanes equipped with certain Pratt & Whitney PW4000 engines to inspect these engines before further flight. The FAA is taking this action as the result of a fan-blade failure that occurred Saturday on a Boeing 777-200 that had just departed from Denver International Airport. Although the aircraft landed safely, the failure resulted in damage to the engine, an in-flight engine fire, and damage to the airplane.

TWA Flight 800, A Boeing 747, Crashed July 17, 1996, Minutes After Takeoff

The National Transportation Safety Board has decided to decommission the TWA Flight 800 reconstruction as the agency prepares for the expiration of the lease for its Ashburn, Virginia, Training Center. The reconstruction, housed in the 30,000 square foot hangar along with other training tools at the NTSB’s Training Center, has been used in the NTSB’s accident investigation training courses for nearly 20 years. However, advances in investigative techniques such as 3-D scanning and drone imagery, lessen the relevance of the large-scale reconstruction in teaching modern investigative techniques.