Passengers, if you're flying on one of the following airlines, fasten your seatbelts.

No, really. Make sure they're nice and tight because you could be traveling on one of the most unsafe carriers in the world, according to a new list from AirlineRatings.com.

 

The ratings

The site ranked airlines around the world with a numerical rating from 1 to 7, with 1 being the least safe. And close to 50 airlines were rated 3 and below, which, of course, isn't too good.

Read more: This airline is offering $99 flights from U.S. to Europe

 

The site surveyed over 400 airlines and looked at things like government audits and fatality rates. The 3-star-rated airlines include: FastJet, Bangkok Air, JetStar Pacific and Libyan Airlines.

At the 2-star level, some of your options include: NOK Air, Airlines PNG, Blue Wing and Kam Air.

And for the risk-takers out there, here are a few 1-star options: Citilink, Lion Air, Wings Air and Xpress Air.

On a positive note, 148 of the 407 airlines surveyed had the top rating. And fatalities from 2015 are below the 10-year average.

Safest discount airliners

The list also included the top 10 safest low-cost airlines. In alphabetical order, they are: Aer Lingus, Flybe, HK Express, Jetblue, Jetstar Australia, Thomas Cook, TUI Fly, Virgin America, Volaris and Westjet.