The National Transportation Safety Board said at a briefing that Paul Dudley had spent three hours with federal investigators and was still speaking with them by evening. He was described as being fully cooperative.
They are asking him about his past experience and flight time, and for a specific rundown of what he did in the moments before takeoff and when the helicopter crashed minutes later.
It's all part of "a more thorough opportunity to understand" what happened, NTSB member Mark Rosekind said
Investigators are also looking into the weight of the aircraft and passengers along with the winds at the time it plummeted into the water.
The allowable weight of the passengers is still being determined, investigators said, and the helicopter is being weighed with special aircraft scales as part of that investigation.