Faint siren like sound with full ANC
Bonanza Professional
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Maybe i am just hearing things but i can swear that during the take off when im standing on the runway i can hear a very faint siren sound in the background and i cannot figure out what it is. You can hear this especially well when having the ANC turned all the way up using the headphones. Anybody else hear this or maybe have an idea whats making this sound?
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It was posted elsewhere on here but that's the electronic whine of the strobe capacitors.
Edit: here it is https://community.justflight.com/topic/9277/ongoing-alarm-sound-after-switching-strobes-on-naturally-aspirated-b58