This G91 is former Luftwaffe 30+79. It was preserved at Sintra from 1984 up to July 2017. It then went to Ota for restoration. It was last noted in early 2018 with its construction number confirmed and still with fake tail '5457'. The real 5457 was written off in a crash near accident in Montargil (Portugal) on 18 February 1981. That aircraft was former Luftwaffe 31+96 which was taken on charge by Portugal in 1980.