Faire D''ncome ,
Are you aware that United allow pax to listen in on ATC tx on their o/b audio equipment? And that others allow pax to watch take-off and landing on o/b video equipment! So, you can already (legally) listen in on a potential "mayday" call or even watch yourself crashing! Your arguments are foundless on me. Most of you, including cabin crew, are basing your answers of "receivers may cause interference" on ignorance.