english: The result was the Jetstream 31, which first flew on 28 March 1980, being certificated in the UK on 29 June 1982.
non_english: The Jetstream 31, pertama kali terbang ing 28 Maret 1980, kang certificated ing UK ing 29 Juni 1982 sawetara atus 31s padha dibangun sak 1980s.