Pacific Helicopter ops number 675 7321833
I don't know about a merger although there were discussions about it when I was there in the 90's
It seems the greed factor in management on both sides cut the idea short fairly quickly.
PNG is a spectactular country and the flying is very stimulating challenging and rewarding from sea level up to near 15000' isa plus 20 but it can be fatally unforgiving as well.
Have no desire to go back only because of the way the place is being run into the ground by those greedy lying politicians whose only concern is how they can rip off the white man and kill and pack rape any thing that moves.
Pacific Helicopters ,Hevilift, Heli New Guinea all very good operators with good equipment and maintenance attitudes.
Fly safe