Does ETSO/TSO certification imply usage approval?
Hi!
MY operator recently forbid usage of privately owned BOSE A20 headsets on A320 fleet.
Though this headset has FAA TSO and EASA ETSO certification, the operator's argument is that it is still not approved for usage on A320-aircraft.
Does every Headset still need to be certified on specific planes regardless of TSO/ETSO?
Can I find a list of approved headsets on 320s somewhere? (Google didn't help so far)