If you read the convening authority's comments at the end of the SI, you will see that he refers to the BD accident and that an SI will be published later this year. He remarks that there will likely be many similarities in the causal factors.
Found that now, thanks 212man
I knew about the BD crash but hadn't realised they had speared one in earlier.
Why would you have a UAV that doesn't have the ability to be hand flown in emergency? Is it to do with cap-badge politics and the RA not wanting to call the operators 'pilots' because that's going into AAC/RAF territory?
Strange that despite that 'non pilot' status and no controls, they are still paying loads to give their operators air experience and air awareness training in a light fixed wing.