A 42-year-old Perth man has been charged with attempting to manufacture a prohibited drug after police searched his property during a visit on another matter.

Footage of a teen being put in a spit mask at an adult correctional centre has raised new concerns about the treatment of 17-year-olds in Qld's justice system.

Two American airline pilots, accused of being intoxicated as they prepared to fly from Scotland to the US, have been released on bail.