Not on already certified and installed seats they're not. If it's a retrofit program with new seats being installed, then yeah the audio jacks would likely get upgraded to the latest design. But if it's already flying the only thing those seats are getting is a half-hearted wipe with a dirty rag.
Frogblaster77 t1_j6jc4uo wrote
Reply to comment by ark_mod in eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92
Not on already certified and installed seats they're not. If it's a retrofit program with new seats being installed, then yeah the audio jacks would likely get upgraded to the latest design. But if it's already flying the only thing those seats are getting is a half-hearted wipe with a dirty rag.