Boeing spokesman acknowledged that the number of 737 NG airplanes banned from flying around the world due to cracks in the wings could be up to 50.

A Boeing spokesman today said less than 5% of the 1,000 737 NGs across the globe have been found to have cracks in the wings and are being repaired. This is part of a "pickle fork" review, an important part of the wing that is attached to the fuselage of the 737 NG line.

Officials did not not give exact numbers about 737 NG aircraft have problems, but the rate of 5% is equivalent to 50 units.

Qantas, the national airline of Australia, became the newest airline to fly with the 737 NG line after the aforementioned cracked wing. South Korea also previously found 9 737 NG aircraft with faulty wing cracks and suspension with this aircraft line.

The Federal Aviation Administration (FAA) said that if the wing crack problem is not overcome can adversely affect the integrity of the aircraft structure and lead to loss of aircraft control.

The findings of the wing cracking raises concerns about Boeing's technical safety, although the FAA initially required testing only for Boeing 737 NG aircraft with a seniority of more than 30,000. However, Qantas said it discovered the fault of a wing crack in an aircraft that went through 27,000 flights.

Boeing spokesman "regrets" the impact of the incident on customers and said the company is working "around the clock" to fix this problem.

Boeing CEO Dennis Muilenberg on October 30 had a hearing before US congressional committees, which acknowledged responsibility for the Flight Control Enhancement System (MCAS) incident on its newest 737 MAX line. .

The bug is thought to be related to two plane crashes from Lion Air and Ethiopian Airlines, killing 346 people in less than 6 months.

Boeing 737 Next Generation, abbreviated to Boeing 737 NG, is the next generation jet of Boeing 737, with 4 main variants: Boeing 737-600, 737-700, 737-800 and 737-900, also One of the most popular jets in the world.