Whenever I'm parked on the ground in either the PAX or Cargo variants of the A300, with one of the doors open, I can hear a sound as if a cleaning crew were running some super high power vacuum cleaners in the cabin.
I thought it might be the APU but the sound seems to be generated in the forward part of the cabin when I roam around. Could the developers comment on this? What is the source and intention for this sound effect?
If it's a noisy cleaning crew, they need to be instructed that the pallet roller floor on the 600F does not need to be vacuumed. :3