Watch Skymaster Down for Free: How to Stream the Movie Online at 123Movies. . On January 26, 1950, a US Airforce troop plane left Anchorage for Montana with 44 people on board. The crew of the Douglas C-54 Skymaster #2469 was supposed to check in every half hour along the route. As the aircraft crossed into Yukon, they radioed the tiny outpost of Snag to say that there was ice forming on the wings, but otherwise all was well. After that, the Skymaster disappeared. And to this day no sign of the aircraft or its passengers has ever been found. This fascinating Yukon-shot documentary tells the stories of the victim’s families and an intrepid group of Yukoners striving to give those families closure by searching every summer in hopes that the Skymaster will finally turn up.