The Government Says

AAIB investigation to Bellanca (American Champion) Decathlon 8KCAB, G-TALX

AAIB investigation to Bellanca (American Champion) Decathlon 8KCAB, G-TALX
Local copy of Bellanca__American_Champion__Decathlon_8KCAB_G-TALX_05-26.pdf
Local copy of Glossary_of_abbreviations.pdf

https://www.gov.uk/aaib-reports/aaib-investigation-to-bellanca-american-champion-decathlon-8kcab-g-talx

seen at 10:39, 14 May in Transparency and freedom of information releases.