SOURCE: DJ AM PHONED MOM INSIDE THE AMBULANCE

DJ AM "was completely terrified and traumatized" after his jet crash early Friday, but he was conscious long enough inside the ambulance to call his mother, a source tells Usmagazine.com.
During the emotional phone call, DJ AM, whose real name is Adam Goldstein, let her know he was injured and going to the hospital, the source says.
He is currently in a doctor-induced coma so he can undergo skin grafts in an attempt to repair some of the extensive burn damage.
The medical staff considers him lucky to be alive, as the crash killed four people and also severely injured Travis Barker. (TMZ.com reports Barker was burned from the waist down.)
Meanwhile, a pal tells Us Goldstein's ex fiancee Nicole Richie ""wishes only the best for Adam and hopes he recovers from this."

Usmagazine