Birdwatch Note Rating
2023-04-15 08:59:05 UTC - HELPFUL
Rated by Participant: 535002F6C6BE971163D6094347D42CEFC1C6593DF5568D3D2BBD323317F5ACD6
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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