Chebanga used discarded corrugated iron sheets and other scrap metal to build the helicopter which he painted in police colours - complete with SAPS insignia.
The helicopter, which boasts a blue light and siren, also caught the attention of Police Minister Fikile Mbalula, who posed for pictures.
This paved the way for the helicopter to be displayed at Pretoria West Police College for months.
Robertson said Chebanga was gifted and had potential.
He said he would talk to his associates at plane manufacture, Airbus, to arrange for Chebanga to be assessed for possible training.
Chebanga could not believe he was finally going to fly - for the first time in his life.
"I just cannot wait. But most of all I am encouraged that my work is noticed by people operating the real helicopters.
"This means I am on to something," he said.