Mmmm ....
aviation2 .... I'm afraid I have to partially agree with CVR ... by and large you are mixing stories to give an very untrue sitrep of what has gone on.
There was NEVER an ADA 412SP in Saudi (it was a "Classic" only sent as a short term aircraft and never used). All the other aircraft are 412 EPs or virtually new AW139s.
The 412 accident was as CVR states actually in the UAE and had NOTHING to do with ADA (or Saudi).
ALL of ADA's command pilots were VERY experienced and many of them had extensive EMS experience .... also the ADA SOP for the job was written by a group of very experienced EMS pilots which were headed up by an Ex US "EMS Pilot of the Year" ... and covered just about everything necessary for the task.
You are misguided about the maintenance issues they do not have that much to do with the age of the aircraft ... and a lot to do with the logistics of working in Saudi.
You are however
mostly correct with your views of SRCA.