Keeney would not say whether Hundley was fired or resigned. Hundley was president of AGC's Unitech Composites and Structures unit.
Hundley was charged last week in federal court in Atlanta with simple assault for allegedly slapping the 2-year-old boy during the Feb. 8 flight. His attorney, Marcia Shein, of Decatur, Ga., said Saturday that Hundley would plead not guilty. The charge carries a maximum penalty of a year in jail.
Shein did not immediately return messages seeking comment left Sunday evening by the Associated Press. Hundley does not have a listed phone number.
The boy's mother, Jessica Bennett, 33, told the FBI their flight was on final descent into Atlanta when her 19-month-old son started to cry due to the altitude change. Hundley "told her to shut that [racial slur] baby up," FBI Special Agent Daron Cheney said in a sworn statement.
Bennett said Hundley then slapped him in the face, scratching the boy below his right eye and causing him to scream even louder.
Bennett told Twin Cities television stations on Saturday that the incident has caused her family a great deal of trauma and that her son, Jonah, had been outgoing but had turned apprehensive of strangers.
Hundley became increasingly obnoxious and appeared intoxicated during the flight and complained that her son was too big to sit on her lap, she said.
"He reeked of alcohol," Bennett told KARE-TV. "He was belligerent, and I was uncomfortable."