The FAA is working on airworthiness directives for Boeing aircraft with Whitney 4000 series engines. The ban on those powered by the PW4000 will be lifted after the United Airlines engine failure in February of 2021. The FAA said that the new directives were proposed in December after the in-flight fan blade failures. Enhancements to the engine fan-blade and strengthened engine covers are required by the new directives. One of the directives requires the installation of debris shields on the thrust reverser inner wall. The modification of the engine inlet is required. Depending on the inspection results, a third directive requires specific corrective actions. The three directives will take effect in April. United is the only US airline that has 52 of the jets in its fleet. The proposed modifications to resume flight operations have already begun, according to a United spokesman. “Many of the affected engines have already undergone these proposed modifications. We expect these aircraft to resume flying customers again soon.” Andrew Nocella, the Chief Commercial Officer of United Airlines, said last year that the airline was disappointed by the decision to ground the engines. “The 777 aircrafts that are grounded are large capacity domestic movers. And we used those for Hawaii and hub-to-hub. And so right now, we’re flying well below where we like to be in Hawaii. We really want those aircraft back.” A catastrophic engine failure occurred shortly after takeoff from Denver International Airport on February 20, 2021. An engine failure on a scheduled domestic passenger flight from Denver to Honolulu showered debris over nearby cities. The witnesses recorded falling debris. There was debris on the roof of a residential home. A vehicle was damaged by the debris. After the aircraft suffered an engine failure, the crew declared Mayday and returned to Denver for a safe landing. There were 229 passengers and ten crew members on the plane. The National Transportation Safety Board revealed the following facts after examining the engine. The aircraft with similar engines were grounded after the incident. Some older 777s operated by Japan Airlines, All Nippon Airways, Korean Air, Asiana Airlines and Jin Air were equipped with the PW4000- 112 series engines. Boeing stated that 128 of its aircraft were equipped with the engines. The British Civil Aviation Authority and Transport Canada banned the use of Boeing's jets in their airspace after the incident. The Japanese Ministry of Land, Infrastructure, Transport and Tourism grounded Boeing snoozing aircraft. Japan Airlines decided to retire all of its Boeing 777s a year earlier than planned in March 2021. The head of the US Federal Aviation Administration (FAA) has ordered immediate or stepped-up inspections of all Boeing 777 aircraft equipped with Whitney and Pratt and Whitney engines. The directive comes as airlines begin to ground the aircraft in the wake of Saturday's dramatic engine failure over Colorado. In & Two airworthiness directives have been issued for the operators of the A380. Operators with the Engine Alliance GP7200 are being told to conduct independent inspections for cracking and wear. The AD requires an initial inspection of all GP7270, GP7272, and GP7279 engines. In A380. The General Electric GE90 is the power source for the Boeing 777. This AD concerns the GE90-110B1 and GE90-115B, both of which are used on the B777-300ER - turbofan engines, with a certain interstage high-pressure turbine (HPT) rotor seal installed. Both engines can be used. In &Three Airworthiness Directives Required
United Airlines Pratt & Whitney powered Boeing 777s to return to service
United Airlines Denver Incident
United B777 Engine Failure After Take-off From Denver
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