Dangerous cracks found in dozens of Boeing 737NG. American producer, whose latest Airliners and so chained to the earth because of two crashes, now threatened by new losses.
Suspicion fell almost two weeks ago, one of the most popular aircraft in the world Boeing 737NG, is confirmed and can now result in the revocation of broken airplanes, and for Boeing to turn into a new reputational and financial losses.
According to the American media, the number of defective aircraft has tens.
About a new problem with popular Airliners, the Boeing 737 became known in late September, when the company’s engineers accidentally discovered cracks in their design. 2019 has become a nightmare for corporations because of two accidents aircraft MAX that occurred due to incorrect algorithms of the autopilot. The investigation led to the landing of these planes throughout the world and to suits by the victims of disasters, as well as carriers.
This time the problem concerned the previous generation of aircraft Boeing 737NG, which is presented on the market four options with the notation of the -600, -700, -800, and -900.
Cracks were discovered in a hidden design element — fork connection “pickle fork”, which connects the wings to the fuselage and which aircraft 737NG four pieces. With the help of this node are transmitted to the fuselage loads and torques from the wing, arising from the movement of the aircraft.
The site is considered very reliable and service throughout the life of the aircraft — more than 90 thousand cycles “takeoff-landing” — without the occurrence of fatigue cracks. “If this node will break in the air can be heavy consequences, — has told a Seattle TV station KOMO-TV, which first learned of a new problem. — This compound is key for the safety of the aircraft,
and its breakdown in the air can be catastrophic at worst”scenario.
What have you found?
Inspection of in-service 737NG aircraft have borne fruit, according to CNN, citing a Boeing statement.
Similar cracks have been detected in the 38 planes that were in operation.
According to Boeing, as of October 9, it was inspected 810 aircraft of this type, and crack, requiring repair were identified approximately every twentieth of the proven. The first was found on the number of used passenger aircraft, which took a hit in their conversion into cargo versions, said channel, a source familiar with the situation.
According to the publication FlightGlobal, is retrofitting the aircraft passed 800-series, having on his account 35 600 — 37 300 UPS.
All checks must touch the 1911 aircraft, however, according to FlightGlobal estimates based on the data of the service Cirium, most of the planes with a high bloom,
is now in operation in the USA is the aircraft -600, -700, -800, and -900 series.
Only in operation in the world there are about 6800 aircraft 737NG, is not yet known which airlines served cracked aircraft and how many aircraft can still relate to this problem. It is known that check touched the aircraft that performed a number of cycles of takeoff and landing, and are there in the fleet more than a hundred airlines in the world. At the direction of the Department of civil aviation United States aircraft,
having more than 30 thousand UPS required test during the week, more than 22.6 thousand takeoffs during the year.
Boeing claim that the withdrawn aircraft will hold an easier repair than required by the situation with the aircraft MAX.
“Safety and quality are priorities for Boeing. Boeing regrets the problems created by this precedent for our customers around the world — said in a statement. Boeing is actively cooperating with customers to develop a plan of repair and provide spare parts and technical support, if necessary”.
Earlier Wednesday, only one us company, Southwest, officially announced the decommissioning of two of its planes from-for the revealed problems. Only in the airline’s fleet of more than 700 such machines. Three other large us companies American Airlines, Delta and United said the lack of problems, as their fleet no of ships who have committed a specified number of flights. Brazilian Gol announced a recall of 11 aircraft.
Aviation history knows cases, when the accumulation of fatigue fractures in elements of aircraft led to the disaster, and even the decommissioning of certain types of aircraft.
Such cracks, time has not seen, led to several crashes of Soviet passenger An-10.
After the disaster at Kharkov proved that the wing collapsed due to the reduced strength of the stringers, which were formed fatigue crack. Shortly, the state Commission decided to remove the lines, all available An-10.