Boeing’s 737 MAX model just doesn’t seem able to outfly bad publicity. Even if the latest problem is just with one specific plane, its manufacturers will pay the price of greater scrutiny.

Early Monday, futures markets pointed to an 8% fall in Boeing’s share price as investors tried to assess the potential damage inflicted by a door plug that blew out of a jet flown by Alaska Airlines on Friday evening. The Federal Aviation Administration grounded planes Saturday and ordered airlines to conduct inspections.