i'm not aware of a requirement for a government agency to make a classification on wikipedia still for the food poisoning case the cdc and fda probably count as reliable sources likewise in the smoking incident the supreme court of the united states ought to be worth granting some degree of credibility both cases pertain directly to the safety of practices on commercial air flights so should meet the list criteria i've addressed the absence of explicit articles in aerol neas argentinas flight and olympic airways flight although i believe that in general it's an overly strict policy leading to the creation of trivial articles that could better be in one section of an airline or aircraft's article