Boeing CEO Dave Calhoun acknowledged errors by the US planemaker, telling staff the company would ensure an accident like the mid-air Alaska Airlines panel blowout “can never happen again”, as more than 170 jets remained grounded for a fourth day.

Boeing reported its biggest loss ever on Wednesday as the 737 MAX crisis drags on, and the company warned it could be forced to temporarily halt production of the plane if the grounding is extended much longer.

Boeing has confirmed that the firm is taking a $4.9 billion financial hit to cover costs related to the global grounding of its 737 Max aircraft. 

Russia, Japan, and Tunisia follow a host of countries in either grounding or banning takeoffs, overflights, and landings of Boeing 737 MAX planes following a recent fatal crash.

Airline stocks pared their early losses Monday, as Boeing Co. shares rebounded from their worst levels, after a deadly crash involving the aerospace giant’s 737 Max 8 aircraft in Ethiopia, the second fatal accident involving the aircraft in six months.

A Boeing 707 cargo plane flying from the Central Asian nation of Kyrgyzstan has crashed in Iran's Alborz province after it overshot the runway during landing. All 16 people on board the aircraft but one are presumed dead.

Indonesian authorities investigating the recent crash of a passenger plane that killed 189 people on board have announced that the pilots of the Boeing 737 MAX had not been provided with adequate training by the aircraft manufacturer.

The world’s largest commercial turboprop maker ATR is in talks with alternative buyers for seven remaining aircraft which it has to deliver to Iran under a $536 million deal, the company’s Italian shareholder Leonardo says.