The Quest Kodiak 100 is the aircraft which flies Jesse Pinkman, Gustavo Fring and Mike Ehrmantraut in to Mexico to meet with the Juárez Cartel("Salud"). The aircraft was likely owned by the Cartel or a mercenary force they were partnered with. A skilled pilot would have undoubtedly been required to handle the dangerous and illegal regular smuglingg flights. It likely originated from somewhere near Juarez, CH and flew north to the area around Albuquerque, NM. It would have to to fly under the radar to avoid detection by Mexican and American law enforcement. After picking up members of the Fring Cartel it flew back across the border to Mexico. Likely landing at an airfield controlled by the Juarez Cartel for smuggling.