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Old 28th Aug 2023, 19:39
  #3327 (permalink)  
TBSC
 
Join Date: Jan 2008
Location: Switzerland ... oh wait: Swaziland
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On departure they are quieter indeed. But on arrival the A220 and the A320neo family aircraft have a high-pitched whistling noise which is quite irritating. No clue if it's the flaps, gears on else but it usually starts on 1000-1200 feet and lasts for around 8-10 seconds. It's something like the famous Yak-40 "whistle" during engine startup. See the video at 01:11.
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