Back in England Southampton was my home airport. It's really quite small. For the longest time FlyBe ran these BAE-146 'jumbolinos' that were pretty quiet (for their time...) but they were inefficient by the time of this photo in 2006. That year they'd be replaced with the much bigger Embraer 190.
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The 146 used to wake me at 7am most mornings on the way to Malaga. The flap made this very distinctive whistle, like a loud moan when it retracted, caused by the air rushing between the slots.
