Airliners rarely if ever keep the same interior product for the entire 20-30 year lifespan of a plane. Maybe 10-12 years tops until the interior is ripped out and replaced.
And I've flown on many Air Canada flights with IFE circa 2006 that have a single audio jack in the armrest.
Incompatibert t1_j6kr25i wrote
Reply to comment by redditlurker67 in eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92
Airliners rarely if ever keep the same interior product for the entire 20-30 year lifespan of a plane. Maybe 10-12 years tops until the interior is ripped out and replaced.
And I've flown on many Air Canada flights with IFE circa 2006 that have a single audio jack in the armrest.