RAAF in 1970s colour photos seen for first time in 40+years

In 1971 an Australian soldier serving in Vietnam took photos of his tour and also when back from Vietnam some more photos in Queensland. Among these photos are a series of aviation images which may interest people. You can see variety of UH-1H Hueys, PC-6 Porters, CH47 Chinooks and more at https://www.facebook.com/downunderaviaitonnews/posts/1419669308045116