I remember in 1997, when a SA330J had a sudden stop after a freewheel #2 had a sort of slippage during the starting procedures... Because the SA330J has not tripletach, the captain was unable to notice that the second engine had not engaged... of course, the Eurocopter + operator, have pointed the fault to the captain for that... you can imagine, the helicopter has no advisory or instrument about the N2(Nf or Ntl) and the fault was from captain!!!