The wingspan of the Dragon Rapide is 48 ft and the length is 34 ft 6 ins.(Old aeroplane, old measurements).

In her youth she would cruise at 135 mph but in deference to her age your flight would probably have been flown more gently at around 100mph.

In airline service she would have had a range of about 550 miles or 4 hours. Still pretty good performance on two 200 hp engines