They identified him as Anand Patel, 26, the founder of What's Happy Clothing.
The plane, a Piper PA-24 Comanche, which was headed to Las Vegas crashed on Monday night onto a Scottsdale golf course, some 15 minutes after takeoff from the city airport.
Nobody on the ground was hurt, said Kevin Watts, a Scottsdale Police Department spokesman.
On hitting the ground, the single-engined plane burst into flames, killing all the six passengers on board, police said. Their age ranged from 22 to 28 years.
Anand Patel was "an entrepreneur with lots of energy and lots of charisma," his brother told the daily.
The plane crash is being investigated by the National Transportation Safety Board with help from the Federal Aviation Administration.
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