[Goncalo Mendes]

A few more links that I didn't remember to see before, but some of them were probably already posted or known:

Osaka airport papercraft for kids
http://www.pa.kkr.mlit.go.jp/osakapo...my_airport.pdf

Aichi Aviation Museum (control tower and museum hangar)
名古屋空港ミニジオラマ展示とペーパークラフトデータの公開について | あいち航空ミュージアム
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NAGANO simple airport building
信州まつもと空港のイベント情報／長野県 (search red rectangles with PDF, is the one with 95kb); instructions is the link just above it.

Direct link:
model
https://www.pref.nagano.lg.jp/airpor...papercraft.pdf
instructions
https://blog.nagano-ken.jp/matsuchi/信州まつもと空港/24219.html
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simple models, kagawa province forces

https://www.mod.go.jp/pco/kagawa/craft/craft.html
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Japan Defense Forces

https://www.mod.go.jp/asdf/special/d...ane/index.html

https://www.mod.go.jp/gsdf/fan/downl...aft/index.html

https://www.mod.go.jp/j/kids/papercraft/index.html

https://www.mod.go.jp/msdf/oominato/gallery/papercraft/

https://www.mod.go.jp/msdf/ccf1/papercraft/index.html

https://www.mod.go.jp/msdf/oz-atg/bu...vphs/vphs.html

https://www.mod.go.jp/msdf/onemss/pe...akurafuto.html (with buildings and boats)

https://www.mod.go.jp/asdf/hofuminami/papercraft.html (aircraft and deformed)

https://www.mod.go.jp/asdf/yakumo/contents/index.html (missile louncher)

Cheers!