AAIB investigation to Bristell NG5 Speed Wing, G-STEL
Local copy of Bristell_NG5_Speed_Wing_G-STEL_04-26.pdf
Local copy of Abbreviations.pdf
https://www.gov.uk/aaib-reports/aaib-investigation-to-bristell-ng5-speed-wing-g-stel
seen at 10:43, 19 March in Transparency and freedom of information releases.