Just putting a few new toys like TCAD, HUMS and EGPWS doesn't make a tired old design a modern helicopter. As can be seen from another thread on this forum, there are many arguments for and against EGPWS and at the moment it is of limited value when flying in Nigeria because of its limited database and no updates for movable offshore installations, such as rigs, barges etc. There are almost as many tired old 412 basics and SPs as there are EPs. All CHCs new S76s have EGPWS, TCAD, Skywatch, GNS 530, IIDS and Sikorsky's own vibrex system fitted. I guess by 'all' the new S76C+s imported, you mean the 3 IIDS machines, as the non-IIDS machines are old ex-Helikopter Service (Sweden) machines. As for BCT and SKY
. CHC are already retrofitting their 2 older S76s with Skywatch and GNS 530 and will be doing the same to the SA365N3s. The EC155s (actually owned by Shell) have no TCAD, EGPWS or Skywatch, have been a sad disappointment in terms of performance, payload and range and are likely to disappear from the skies of Nigeria in the next year or two. I'm told Shell are looking at the AW139 now it has an approved simulator. Mind you, that probably won't help CHC, as Bristow had no experience of operating Dauphins (and the 155 is really only a 365N4), whilst Schreiner had many years experience with them, and Bristow still got the operating and maintenance contract. CHC does now have the advantage of having a new contract in Kazakhstan for Shell, which is rumoured to eventually expand to up to 10, or more AW139s.