Birdwatch Note Rating
2023-04-15 19:11:10 UTC - HELPFUL
Rated by Participant: BC84B10F6FE9E14860ADBF019AC57F774556324B95A6C8B47CCFFDAA20C10D19
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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