Originally Posted by
FlyingStone
Extension to 120 days can be a bit tricky, as not all TRI/TREs are able to do it.
There are basically 3 levels of TRI under EASA:
1. TRI(A)(Simulator Only)
2. TRI(A) (Restricted “No instruction for abnormal/emergency procedures to be undertaken in an aircraft")
3. TRI(A) (Unrestricted)
The TRI would need to hold number 2 or 3 in order to supervise the takeoffs and landings required.