The CatCopter is a helicopter belonging to CatCo.
Leslie Willis's accident
When Leslie Willis was transferred to traffic by Cat Grant, she flew in the CatCopter despite an ongoing lightning storm. When lightning struck the chopper and started to spin out of control, Supergirl came to the rescue. Whereas she managed to return the pilot to safety, when Supergirl took Leslie's hands, a bolt of lighting hit both of them.