Australian David Warren invented the prototype for the in-flight recorders now compulsory on all civilian flights. But he had to fight to get his idea into production. Show more
Discover 11,128,835 listings and 277,412 playable programmes from the BBC
Australian David Warren invented the prototype for the in-flight recorders now compulsory on all civilian flights. But he had to fight to get his idea into production. Show more
The BBC's international radio station
