Air Crashes

The investigation following an air disaster is supposed to make air travel safer. But do the reports always get to the truth about why planes crash? Emma Jane Kirby examines claims that international air accident investigations are often slow, incompetent and influenced by political sensitivities. So how does this affect the victims' families as they fight manufacturers and airlines for compensation? And could the blame game be preventing lessons being learned that could prevent future accidents?
Producer Jenny Chryss.