Three American families in the San Francisco Bay Area are suing Boeing over the deadly crash of Asiana Airlines Flight 214.
The San Jose Mercury News says the suits filed yesterday allege that the maker of the Boeing 777 provided inadequate training to pilots in South Korea.
However, it does not make clear whether Boeing trained the pilots of Flight 214, which crashed last month while landing at San Francisco International Airport, killing three Chinese teenagers.
A crash survivor is among those in the lawsuit.
The families also claim that Boeing should have added a "low airspeed" voice warning for pilots to the 777, following a similar crash of a Boeing 737 in Amsterdam four years ago.
Boeing said it is "supporting the actions by regulators" following a blaze on one of the company's 787 Dreamliner jets at Heathrow airport last week:
An Ethiopian Airlines' 787 Boeing Dreamliner flight has safely touched down in the Kenyan captial Nairobi approximately three months after air safety authorities grounded all the jets.
Two separate incidents with smouldering batteries in January saw all the Dreamliners grounded while engineers fixed the fault.
Boeing insists it has now fixed the problem and that all 787's will soon return to the skies.