Ask HN: Why Are the Interior Surfaces of Aircraft Painted Green?

2 points by simonblack 5y ago ↗ HN

Why are the insides of aircraft surfaces painted that bilious green color? Is it an anti-corrosion thing? Or is it for some other reason?

https://glasair-owners.com/wp-content/uploads/2019/07/08_test_fitting_GlaStar_Aux_Tank_.jpg

(strange link: seems to work only with copy and paste)

4 comments

[ 3.7 ms ] story [ 17.0 ms ] thread

zgniatacz 5y ago ↗

zinc chromate

gus_massa 5y ago ↗

> (strange link: seems to work only with copy and paste)

It's a feature to discourage the submission of links inside questions, so the submitter does not have a pinned comment. But in some cases it is an antifeature.

Clicky: https://glasair-owners.com/wp-content/uploads/2019/07/08_tes...

Also, "clicky" version of the comment by zgniatacz chttps://en.wikipedia.org/wiki/Zinc_chromate

ratsmack 5y ago ↗

Zinc chromate comes in various shades of green and yellow.

steffan 5y ago ↗

Typically the green color is zinc chromate which is used to prevent or reduce corrosion on aluminum parts