are grounded worldwide, after a door panel blew out, mid flight, on friday. and. blast off for the first american lunar mission developed by a private company. we look at the commercialisation of space. welcome to world business report. i m lukwesa burak. we start with boeing shares in the us aircraft giant have sunk as much as 8% after the grounding of more than 170 737 max 9 airliners around the world on safety concerns. a door panel or plug on an alaskan airlines 737 blew out mid flight over the us state of oregon on friday, forcing the jet to make an emergency landing. there were no major injuries among the 177 people on board.