01-photo : Pexels (Pixabay) Chris F 9272151
02-photo : pexels (pixabay) 159430 
03-photo : Pexels (Pixabay) Wu Ming 1166034
04-photo : Pexels (Pixabay) Fernando Arcos 189506
05-Photo : Wallpaper vintage plane
https://pixabay.com/ &  https://www.pexels.com/@pixabay
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vectors
https://www.flaticon.com/ & https://www.freepik.com/
& https://www.vecteezy.com/
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https://www.vecteezy.com/vector-art/9157879-compass-compass-icon-compass-icon-vector-isolated-on-white-background-modern-compass-logo-design-compass-icon-simple-sign
(Author : hefny25 indonesia)
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https://www.vecteezy.com/vector-art/3310590-time-and-clock-icon-set-isolated-on-white-background
(Author : jimny.lova indonesia)
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Image by GarryKillian on Freepik
https://www.freepik.com/free-vector/monochrome-sound-line-waves-abstract-background_19555310.htm#page=10&query=wave%20distort&position=28&from_view=keyword
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image vector by Werneuchen
https://en.wikibooks.org/wiki/File:Cessna_172_line_drawing_oblique.svg
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https://www.flaticon.com/free-icon/speedometer_41491
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