DV
'good name' and reputation have nothing to do with it. The wording of Def Stan 05-123 used to say something like "the certifications of DAOS approved firms is accepted by MOD". MOD have the right to attend any test they want to and its usually a requirement of the contract that they are given notification in advance of such events.
The effects of sink rate, bank angle, pitch angle etc. are all worked out by calculation afterwards. There is no effective way of testing all combinations at reasonable cost.
EAP