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Boeing suspends 737 MAX flights, cites ‘potential’ CFM LEAP-1B issue


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May 10, 2017 Aaron Karp

 

 

Boeing has suspended 737 MAX flights after being informed by CFM International of a potential issue with the aircraft’s LEAP-1B engine, although Boeing says MAX 8 deliveries will begin this month as planned.

“CFM has notified us of a potential manufacturing quality escape with low pressure turbine (LPT) discs in LEAP-1B engines delivered to Boeing,” Boeing said in a statement. “We are working with CFM to inspect the discs in question. CFM and its supplier notified us after discovering the issue as a part of their quality inspection process. At no time have we experienced an issue associated with the LPT during our ongoing MAX testing program.”

Boeing said the decision to suspend MAX flights was made “out of an abundance of caution.” The suspension comes just as Boeing was preparing to begin delivery the 737 MAX 8, which was certified in March, to airlines. Malaysia’s Malindo Air is expected to receive the first delivery. The aircraft is also expected to enter service this summer with Norwegian. “Our plan remains to begin MAX deliveries in May,” Boeing said, adding that there will be no halt in MAX production or in production and deliveries of 737NG aircraft.

The suspension also comes less than a month after the 737 MAX 9 achieved first flight.

Boeing emphasized that it has had no problems associated with the LEAP-1B in flight testing. “The MAX 8 flight test program put over 2,000 hours on the engines, including abuse testing and flights lasting over 9 hr., undergoing thorough inspections throughout,” Boeing stated. “Additionally, 180-minute ETOPS testing completed in April 2017 required another 3,000 simulated flight cycles on the test stand before a complete inspection was conducted by CFM. The LEAP-1B and 737 MAX [8] have been certified to the most stringent requirements in commercial aviation.”

A CFM spokesperson noted the potential issue was not discovered in flight testing or on any aircraft out in the field, but during a quality inspection in the factory, and the decision to suspend flights was made out of caution.

The spokesperson added that CFM has two suppliers for the LPTs used on the LEAP-1B, and the potential issue is only with one supplier’s LPT. The CFM LEAP-1A engine powering Airbus A320neo family aircraft is not affected by the potential issue.

http://atwonline.com/airframes/boeing-suspends-737-max-flights-cites-potential-cfm-leap-1b-issue

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O bom é que foi detectado em seu processo de construção, demonstrando compromisso com a qualidade. Diferente de fazer, vender e depois detectar a falha. Alguns dias e voltam a voar.

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Boeing Resumes 737 MAX Flights

May 12

 

Boeing has resumed some flight testing of the 737 MAX, three days after grounding the fleet citing issues related with CFM’s International LEAP-1B engine.

The first aircraft to return to the air was 9M-LRC, a 737 MAX 8 destined for Batik Air Malaysia. The aircraft took off from Boeing Field around 12:15pm Pacific Standard Time and landed after conducting a one hour and twenty minute test flight.

In a statement to Airways, a Boeing spokesman stated “Today, we resumed some 737 MAX flight activities. Regulatory agencies support this action.”

At this time it is unclear if the engine issues affecting the 737 MAX program have been resolved. Nonetheless, Boeing is continuing to flight test production aircraft with the hope of delivering the first 737 MAX by the end of the month.

Malindo Air is slated to take delivery of the first Boeing 737 MAX on Monday May 15th, with entry into service on Thursday May 19th. When asked if there would be a delay, A Malindo Air spokesperson commented, “We are still in discussion with Boeing at the moment. There is no confirmation on any change to the original plan.”

https://airwaysmag.com/manufacturer/boeing-resumes-737-max-flights/

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Meus prezados

Em português...

Boeing suspende voos do 737 Max por problema no motor
737-max-8-engine-1024x682.jpg

A Boeing anunciou nesta semana a suspensão de todos os voos de seu 737 Max, devido a um potencial problema no motor do modelo. Segundo o site norte americano ATW, a decisão foi tomada após a empresa ter sido informada pela CFM International, que fornece o motor LEAP-1B usado na aeronave, que um possível problema teria sido detectado em um processo de inspeção de qualidade.

"A CFM nos notificou de um possível problema de qualidade de fabricação nos discos de turbina de baixa pressão (LPT) em motores LEAP-1B entregues à Boeing", afirmou a fabricante de aviões em comunicado. "Estamos trabalhando com a CFM para inspecionar os discos em questão. A CFM e seu fornecedor nos notificaram depois de descobrir o problema como parte de seu processo de inspeção de qualidade. Em nenhum momento tivemos um problema associado ao LPT durante nosso programa de testes Max em andamento", ressaltou a Boeing.
2832eafc04e1c24709d72181cfcb78b4d7c901b1

 

Tomada como uma medida de “cautela”, a suspensão ocorre no mês em que a fabricante se preparava para a entrega de seus primeiros 737 Max 8, sendo a primeira destinada a Malindo Air, da Malásia. A Norwegian Air é outra que deve receber em breve os novos modelos, com previsão de início de operações na próxima temporada de verão no país.

Os planos da Boeing, porém, não mudam, e as entregas previstas não foram canceladas. “Nosso plano de iniciar as entregas em maio está mantido”, disse a Boeing, acrescentando que não haverá parada na produção dos modelos Max ou na produção e entregas das aeronaves 737.

A suspensão acontece também menos de um mês após o 737 Max 9 realizar seu primeiro voo-teste, com sucesso, nos Estados Unidos.

A Boeing fez questão de enfatizar que não registrou nenhum problema associado ao LEAP-1B em todos os seus testes de voo. "O programa de testes de voo do Max 8 usou por mais de duas mil horas os motores, incluindo testes de abuso e voos com duração superior a nove horas, passando por inspeções minuciosas", afirmou a Boeing. “O LEAP-1B e o 737 Max 8 foram certificados para os mais exigentes requisitos da aviação comercial ", defendeu a fabricante.

Um porta-voz da CFM confirmou que o problema não foi descoberto em testes de voo ou em qualquer aeronave, mas durante uma inspeção de qualidade na fábrica, e a decisão de suspender os voos foi feita apenas como uma medida de cautela.
N8704Q_Boeing_737_MAX8_DSC_9734.jpg
say-hello-to-boeings-newest-airliner-the

Fonte: https://www.panrotas.com.br/noticia-turismo/aviacao/2017/05/boeing-suspende-voos-do-737-max-por-problema-no-motor_146479.html via Rafael Matera blog Direto da Pista 14 MAI 2017

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