less safe -v- unsafe ??
Clearly some airlines will have a stricture safety culture than others, you have to set a threshold somewhere, lets call it 7 out of 10, but what are you measuring?
Accidents are normally a result of incidents that weren't stopped in time, a bit like a crack thats not drilled, but then you have to factor in all manner of other factors, how old is the fleet, how often do they fly, where do they fly to?
A number of very well know airlines have had 'event' at the more challenging airport, Gibraltar, Madeira & Chambrey to name but 3 and all British outfits
Ryanair fly to some very demanding airports, but with new kit RNAV/VNAF & a very strict SOP discipline keeps them safe in spite of more sectors flown a day than most of the rest put together.
A read of Aviation Herald gives some insight, but there have been plenty of near events in most airlines...if you look deep enough