Airlines keep calm and carry on after Boeing jet groundings

The 737 Max 8 upgrade to Boeing's best-selling jet only entered service in 2017, meaning there are not many in the skies compared with other more established work horses. The Ethiopian Airlines crash that killed 157 people on Sunday was the second 737 MAX crash in less than six months, with 189 others killed when a Lion Air jet went down in Indonesia in October. There were 371 of the 737 MAX family jets in operation before this week's groundings, led by China, according to Flightglobal.