When he was 17 , he joined the Regia Aeronautica ( Royal Air Force ) .
When he was 17 , he became Pilota militare ( military pilot ) of the Fiat C.R. 20 on 31 January 1936 in Aviano .
When he was 17 , he joined the Regia Aeronautica ( Royal Air Force ) and became Pilota militare ( military pilot ) of the Fiat C.R. 20 on 31 January 1936 in Aviano .