Larmanordningen warns the pilot if the two sensors on the plane’s nose sends different signals about the plane’s angle of attack. The pilot is warned by a lamp lit in the cockpit.

is believed to have contributed to the Lion Air 737 Max-the crash in October that killed all 189 people on board, and is believed to also have played a role in the Ethiopian airlines crash in the Ethiopian capital Addis Ababa on 10 march when all 157 on board died.

the security system has so far been optional, according to the Financial Times. The airlines have therefore been able to choose to include the warning system at an additional cost.

the Norwegian to the news agency Reuters that all their plan of model devoid of efas.

”We have chosen not to install this specific option on our Boeing 737 Max aircraft, which is a decision that even other airlines have done, because it is not a safety-critical function and it is not a requirement from any aviation authority, regardless of what some wrongly claim,” writes the Norwegian in an email to Reuters.

to the Financial Times, the us aircraft manufacturer Boeing has now decided that the safety device, which was previously optional, is now to be installed on all newly manufactured plane of the model, and retrofitted on the already existing ones.

at the same time announces the Indonesian airline Garuda on Friday that the revocation of an order of six billion dollars for 49 Boeing 737 Max jet. This is because it is concerned about passengers ‘ confidence after Boeing tried to conceal vulnerability by making the previously optional cockpitvarningslampan mandatory. This is also according to Reuters.

Read more: Bet on the Boeing 737 Max – now is the Norwegian extra tight