Birdwatch Note Rating
2023-04-15 13:56:37 UTC - HELPFUL
Rated by Participant: F10975F76FC4CDB7A83A4D9064A7F4DE40B51B3A9AB68589E98FA685D5B2E7A9
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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