Primarily I am confused as to why the operator is not conducting this type of training in a full motion simulator? Isn't the associated risk the primary driving reason for the simulator? Why would an operator do this type of training in-house?
You obviously have not tried to book simulator slots in the worlds only two available full-motion AW139 simulators for 90 pilots at short notice. There aren't any. Pilots cannot fly without current LPC's/OPC's and these checks require OEI practice. This training can, and is, achieved in the aircraft quite safely by many operators throughout the world.
A pre-requisite for this, however, is competent training staff and a culture that believes in safety, procedures, checklists and CRM. If the operator does not utilise competent, experienced type trainers, and also employs pilots who do not use correct procedures, checklists or CRM then accidents will happen - as they do in Malaysia with monotonous regularity.
There are competent, experienced AW139 trainers available to this operator (or so I am told) but unfortunately these pilots are not Malaysian and are therefore treated as a threat by the local pilots and not utilised. How long before the next accident?