Iz-kan-reddit t1_j6ir1kj wrote
Reply to comment by MisterProfGuy in eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92
>and most components weren't really designed to be replaced.
Seat are designed to be replaced, and are upgraded (or downgraded) on a regular basis.
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