New problem shakes Boeing 737 aircraft .. What is it?

Boeing has found itself forced to boost its infrastructure for the next-generation Boeing 737 (Boeing 737 NG), especially aerospace systems.

Veronique Guillermar said in a report in the French daily Le Figaro that Boeing is governed by the Murphy Act, an American aerospace engineer who asserted in the 1940s that "anyone who is at fault will make a mistake."

The writer confirmed that Boeing has been preparing for months for the worst, as the company has been chasing the Boeing 737 Max crisis banned from flying since mid-March 2019 after two fatal accidents.

In addition, the company, which is the best-selling aircraft in the world, is facing a new technical problem this time related to the predecessor of the Boeing 737 MAX (Boeing 737-600, 700, 800, 900), the new generation aircraft, which has made about 6340 copies since its launch a year ago 1996.

Re-maintenance
In October, nearly 1,000 Boeing 737 Next Generation aircraft were rehabilitated in the world. About 5% of them were officially repaired and repaired after cracks were discovered in the structure of an aircraft in China.

The US National Transportation Safety Board (NTSB) is re-inspecting the structures surrounding the next-generation Boeing 737, after one of its engines crashed during a flight from New York to Dallas of Southwest Airlines in April 2018, the writer said. The incident killed a passenger and the fall of eight wounded.

The preliminary investigation found that the fan blade, one of the blades surrounding the engine, was cracked before it collapsed, causing a partial disintegration of the entire engine structure.

Boeing 737 Max is not involved
The writer pointed out that this structure protects the engine and ensures the reversal of the direction that allows the aircraft to braking during landing, so the structure surrounding the engine is equipped with blades separated during the aircraft in the air, which is "very rare" according to the company "Safran" French co-manufacture of engines "C" FM 56 "used by the new generation Boeing 737.

But returning to the Southwest Airlines incident, investigators discovered inside the wreckage a hole in the structure likely to have caused cabin pressure to drop, forcing pilots to make an emergency landing.

On Wednesday, November 20, the National Transportation Safety Board, an independent federal agency charged with investigating all civil aviation accidents, recommended Boeing to improve the design and materials used to build the engine's chassis to be more robust.

The NTSB went much further, calling on aircraft and engine manufacturers to strictly implement its recommendations.

"This incident proved that the fan blade had eroded before it detached in a different way from that we observed during engine test tests," said Board Chairman Robert Somwalt.

For its part, the Federal Aviation Administration - a federal agency specialized in safety - that the first must be examined the recommendations of the National Council for Transportation Safety, because the Council adopted them quickly.

Boeing, in charge of designing the engine-enclosed structure, expressed its readiness to implement the NTSB's recommendations.

The writer noted that Boeing is working on improvements in the design of the structure surrounding the engine, and is scheduled to equip its fleet in service immediately after ratification.

According to Boeing, "up to this hour, all new-generation Boeing 737s are in safe mode and can fly normally."

The company said the problem was handled by powerful blade checks.

Safran and GE Aviation have ended their inspection of some 15,000 engines.

Safran said that the recommendations of the National Council for Transportation Safety does not include blades or engines of the new 737 generation, and Boeing confirmed that Boeing 737 Max aircraft are also not included in these recommendations.

The Federal Aviation Administration has no specific timetable for resuming flights, with Boeing hoping to resume in early 2020.