Quote:
Originally Posted by Maritime Q-Scout
Here's a random question a friend of mine keeps asking me and I keep coming up with different answers.
How come, sometimes planes look REALLY high in the sky, like you can't tell what they are, how many engines they are, or any markings on them. Yet, sometimes you can make out how many engines are on a plane, and the painting of the livery, etc?
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I can usually always tell the type of plane cruising by at altitude, but that is more because I'm a raging avgeek. Every now and then I do get stumped by something.
Fun fact: to tell the difference between a 747 and an A340 watch the contrails. The A340's 4 engine contrails will stay separated, but a 747's will blend into two contrails a short distance behind the aircraft.