ANCHORAGE -

A 17-year-old girl faces charges as an adult for a hit-and-run crash that killed a bicyclist in July.

Alexandra Anne Ellis faces counts of felony manslaughter, leaving the scene of an accident without assisting the injured and driving under the influence.

She is scheduled to appear in court Friday at 1:45 p.m.

The charges stem from a Saturday, July 19, crash that killed Jeffery Dusenbury, 51, who was riding a bicycle along 84th Avenue near Spruce Street when he was hit by a black Chevrolet pickup truck allegedly driven by Ellis.

The pickup reportedly backed into Dusenbury, struck a fence post and then headed south on Spruce.

Tina Adcox was at the scene and said the truck was moving quickly and erratically when she and another person saw the collision with Dusenbury, who was on a road bike and wearing a helmet.

"The car came from that small neighborhood driving backwards, so fast it's squeaking," Adcox said. "So I told the other guy, I said, 'Call 911, right away.'"

Adcox is a trained nurse and did her best to save Dusenbury, but he was pronounced dead at a hospital.

Police quickly tracked the vehicle's license plate and registration to a house near the crash, where officers found the truck and spoke to Ellis.

Dusenbury worked as a food salesman and is remembered by friends as a bicycle enthusiast and a friend who is missed, enough so that hundreds turned out for a memorial service.

"I'd call him a bicycle evangelist, because he really preached the gospel of the bicycle and he lived it," said Peter Van Tuyn, a friend of Dusenbury. "And that means not anything spiritual so much, it's just, 'Get out and enjoy life, whatever your mode -- just get out there and you'll find the joy in it.'"