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Current Affairs

Boeing 737 Max

Date: 07 April 2021 Tags: Miscellaneous

Issue

Boeing 737 Max aircrafts have been cleared to fly after US and European authorities gave them the green signal.

 

Background

The Boeings were grounded after a series of accidents. These accidents were attributed to technical failure in these aircrafts.

 

Details

  • In October 2018, a 737 Max aircraft crashed in the Java Sea shortly after taking off from Jakarta. Later, in March 2019, similar aircraft of the same model crashed in Ethiopia. 

  • After these incidents, aviation authorities decided to ground these models until the investigation is not carried out to determine the reasons.

 

The investigation

  • A major design flaw was observed in the manoeuvring characteristics augmentation system (MCAS) that pushes the nose of aircraft down to prevent stalling of aircraft.

  • During the two crashes, the MCA wrongly read the plane’s angle of movement and pushed the nose down, leading to crash.

  • Several shortcomings were also found in processes laid down by Boeing as well as the US Federal Aviation Administration (FAA).

 

Lifting of ban

  • The ban was lifted after technical modifications and additional pilot training. India is yet to allow lifting ban and has asked the airliner to conduct its own tests.

  • Countries such as Japan, Canada, Brazil, Europe, the UK, the UAE, and Australia approved the aircraft’s return.