简介：Thefilmtellstheveryrealandongoingstoryofwhatmanyclaimisthebiggestcoverupinaviationhistory.Passengersandcrewsfornearlyfiftyyearshavebeensuppliedwithunfilteredairtobreath,takendirectlyfromtheengines,eventhoughthisairsupplyisknowntosometimesbecomecontaminatedwithneurotoxins,carcinogensandotherhazardouschemicals.Withuniqueaccessintotheaviationindustrythefilmrevealsthecoverupandseriousexposureconsequencesonflightsafety,passengerandcrewhealth,ofthosewhohaveandcontinuetobeunknowinglyexposed.…