Wednesday, February 24, 2021

Boeing 777s are pinned down to check their engines


The American airline United Airlines decided to fix 24 older Boeing aircraft with Pratt & Whitney PW4077 engine, after the accident that happened last Saturday.

At the time when Boeing is gradually returning the 737 MAX aircraft to the airwaves, after it has repaired its software, its 777 model is creating new problems. In particular, the American airline United Airlines decided to fix 24 older Boeing aircraft with a Pratt & Whitney engine type PW4077, after the accident that happened last Saturday, when the engine caught fire. Although the flight from Denver to Honolulu with 231 passengers and 10 crew landed safely and no one was injured, the problem is serious. Reacting immediately, the US regulators ordered an urgent inspection of their aircraft and engines and especially the fans of the latter. The Ministry of Transport of Japan yesterday ordered the landing of aircraft, which have a variant of the aforementioned engine, while air carriers such as Korean Air Lines and Asiana Airlines did the same. As expected, the shares of Boeing and Raytheon Technologies, which owns Pratt & Whitney, fell before the opening of the US market yesterday by 3.9% and 2.9% respectively.
Fear and anxiety

The Boeing 777 landed safely in Denver and no one was injured by the wreckage, which fell to the ground while the engine was on fire. Footage from the incident was shot by a passenger but also by people on the ground, who recorded debris scattered in various places and some near houses. The fear, created by the accident, is born at a special moment for the course of the global aviation industry and aeronautics in general. After a year of pandemics and drastic restraining measures to contain it, the industry is trying to get out and recover, despite the inherent difficulties – to a large extent the barriers to movement remain. On the same day as the Denver accident, another incident was recorded in the Netherlands on a freight aircraft carrying an engine from the same PW4077 family that made an emergency landing shortly after taking off from Maastricht. Aviation authorities across the Atlantic have thoroughly investigated Boeing after two fatal crashes two years ago in Ethiopia and Indonesia with 737 MAX aircraft.

In the current situation during the flight of United, in which the damage occurred shortly after take-off, two wings of the fan broke, as stated in its report by the National Transportation Safety Council. Most of the damage was to the engine and the aircraft suffered only minor damage. While the Denver incident has nothing to do with the wider problems of the Boeing 777, a twin-engine aircraft with a wide fuselage for intercontinental flights, it comes with another issue for US aeronautics. Boeing also cut sales of the 787 Dreamliner to check for manufacturing defects. In a statement on the events of the weekend, the American aeronautical company finally stated the following: “We proposed the suspension of 69 in-use aircraft and 59 stored Boeing 777s, which are powered by Pratt & Whitney 4000-112 engines until The Aviation Authority shall determine the appropriate inspection protocol “. Pratt engines were used in older versions of the Boeing 777, and in the case of United the aircraft made its debut in 1995. The manufacturer no longer makes engines for newer wide-body aircraft, earning revenue from services and spare parts.



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