Maloney said Composite Helicopters, which is currently building its third prototype helicopter, had taken deposits from a number of customers in New Zealand and Australia and still expected to begin making deliveries of aircraft at the end of July or early August.
The choppers have a price tag of around US$450,000 ($536,000).
"[The accident] is not likely to slow us up at all," Maloney said.
"The design and the review of our production process and so on have already moved into the next phase."
The Civil Aviation Authority has begun an investigation into why the KC518's US-made engine lost power.
"The helicopter that we were flying [on Tuesday] had accumulated just under 200 hours [in the air] and the flying programme had been going remarkably well," Maloney said "We've been really pleased with the way the helicopter has been performing."
The KC518 has the world's first all carbon-kevlar helicopter fuselage and the lowest cost of ownership of any turbine chopper, the company says.
Maloney said that had he been flying up the coast of the North Shore on Tuesday when the power loss occurred, rather than over the harbour, he would have been able to land the helicopter on a beach.
"The machine was controllable all the way down to the [water]," he said.
Maloney and his wife Leanne will travel to Russia today to attend an event in Moscow where they will promote the helicopter. "We'll have a small stand with video and bits and pieces," he said. "I'm sure there will be lots of questions and discussions with respect to the design details and how the airframe survived the water landing."
The crashed chopper had been recovered from the harbour yesterday and the company was facilitating its return to North Shore Airfield, Maloney said.