Boeing has added three safety elements to its 737 Max Manoeuvering Characteristics Augmentation System (MCAS) in an effort to get certifications from aviation regulators across the world to get the grounded fleet to fly again.

India's Director-General of Civil Aviation (DGCA) is among the regulators briefed about the modifications.

This was announced by Darren Hulst, Boeing's Senior Managing Director Market Analysis & Sales Support (Commercial Airplanes), in New Delhi on November 6.

The MCAS software was blamed by investigators as the cause of two catastrophic Boeing 737 Max crashes which killed all 346 persons on board. The fleet was grounded in March this year following the second crash in five months.

While Boeing had targeted getting the fleet of 387 grounded 737 Max aircraft across the world to fly again by the end of this year, it is more likely that regulators across the world, including the USFAA, will take more time to certify the changes

While Boeing had targeted getting the fleet of 387 grounded 737 Max aircraft across the world to fly again by the end of this year, it is more likely that regulators across the world, including the USFAA, will take more time to certify the changes.

"Three additional layers of protection on the MCAS have been tested in 800 test flights. This is to add further redundancies as a safety measure," Hulst said after releasing Boeing's annual India Commercial Market Outlook.

"We have provided detailed information on the crashes and changes made on the plane to the DGCA. We've engaged with the DGCA at the seniormost levels," Salil Gupte, president of Boeing India, added.

India's SpiceJet has a fleet of 12 Boeing 737 Max jets.

"There's a process to get it back to service safely. The timing is up to regulators. We think it could be towards the end of this quarter. We're working the process," Hulst said.

The crashes of the Indonesian Lion Air Flight 610 on October 29, 2018 and the Ethiopian Airlnines Flight 302 on March 10, 2019 have been blamed on a rogue MCAS which is reported to have put the two ill-fated aircraft into an irreversible nosedive

"We've improved training process. We're working with the pilot community and operators for crew confidence. We want this to be transparent. The next step is certification," he added.

The fleet of 387 Boeing 737 Max aircraft used to fly 8,600 weekly sorties for 59 airlines before getting grounded.

The crashes of the Indonesian Lion Air Flight 610 on October 29, 2018 and the Ethiopian Airlnines Flight 302 on March 10, 2019 have been blamed on a rogue MCAS which is reported to have put the two ill-fated aircraft into an irreversible nosedive.

After the second crash, the US Congress and its Department of Transportation started investigations into the FAA certification. It was alleged that the FAA had delegated too much self-approval authority to Boeing.

The world's biggest aircraft manufacturer has been criticised for failing to train pilots adequately about the MCAS.

Following the grounding, Boeing halted deliveries and reduced production of the MAX. As of October 2019, the grounding cost Boeing up to $9.2 Billion in revenue and compensation to airlines and bereaved families.