If they were that well known the CAA NZ would have listed them. It's not just ownership or leasing to the company(s) it includes any maintenence by them. You would need to know your aircraft very well to be sure that it had not been through their hands in the last 6 years or had a part supplied by them fitted. And the A.I. is making a certification. I'm a licenced engineer and would not do it without at least looking at the maintenence records. Anyone who relied on their "knowing" is little better than those who presumably carried out improper maintenence. A quick search showed thy had about 30 rotary and 12 fixed wing aircraft.