Birdwatch Note Rating
2023-04-15 09:19:22 UTC - SOMEWHAT_HELPFUL
Rated by Participant: C6A957A9B158CD1FB8450A225B953FEAD79D46AD8F9A72DB1A5E71E2D6C282BB
Participant Details
Original Note:
Flights in the same direction are multiples of 1000 ft apart in altitude. That difference in altitude makes one plane look faster. Atmospheric conditions vary at different flight levels. Those conditions determine the formation of ice crystals, also known as contrails. https://www.faa.gov/regulations_policies/policy_guidance/envir_policy/media/contrails.pdf
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