First post and probably a dumb question. But can someone tell me what the small circular knob is on the A320’s corner window pillars are? For lack of a better explanation, it looks like a black and white “ying yang” symbol, with a black rectangular switch underneath it. It’s INOP in both the MS and …

A320 Buttons on window pillars

Derickt July 10, 2022, 5:46am 4

Thanks for the responses! Well, I guess I won’t be doing much reading in the dark then haha