Mark Downham explains what it is like to work on a 70 year old aircraft such as the Mallard. He also talks about his career in the Australian Navy working on Seaking helicopters and his time in Fiji where he maintained 2 Twin Otter Amphibian‘s working for 7star resorts. He talks about how corrosion effects an aircraft and how to treat it.Complete a survey about On the Step to help it grow!https://forms.gle/rQ3bwFfJuVZqWN1P8Follow me on Instagram! https://www.instagram.com/thatmallardguy/Check out my YouTube Channel!https://www.youtube.com/channel/UCk6O4NEHd-Q5StSNLLfbjuw?view_as=subscriber