Hello everyone,
For quite a while now, while watching aviation related videos on YouTube and other media sources, I have heard the same "double-beep" on board various US aircrafts including F/A-18, V-22 Osprey as well as the Apache A-64. This beep seems to go off either during takeoff or landing. At first, I thought this beep was from the EGPWS or similar systems but it would not make a lot of sense when the sound can also be heard when the aircraft is taxiing. Below is a YouTube link to an A-64 cockpit video, where the beeps are audible 13:06. What is the source of this beep? Is it the avionics or the radio and what does the beep/beeps mean?
/watch?v=BArp6RVgZ9k
Thanks for the help!
For quite a while now, while watching aviation related videos on YouTube and other media sources, I have heard the same "double-beep" on board various US aircrafts including F/A-18, V-22 Osprey as well as the Apache A-64. This beep seems to go off either during takeoff or landing. At first, I thought this beep was from the EGPWS or similar systems but it would not make a lot of sense when the sound can also be heard when the aircraft is taxiing. Below is a YouTube link to an A-64 cockpit video, where the beeps are audible 13:06. What is the source of this beep? Is it the avionics or the radio and what does the beep/beeps mean?
/watch?v=BArp6RVgZ9k
Thanks for the help!