I may be simplifying things far too much here but surely if Babcock are contracted to provide x flying hours per year, the risk of how they achieve that lies with them?
In other words, they should either spend their own money on alternative aircraft and argue with the Germans in their own time or pay the costs for a decent civilian flying school to train our upcoming pilot bretheren till they are ready to go again?
Or let me guess - the PFI contract says that any failure to meet agreed targets will lie entirely in the hands of the MOD.