Birdwatch Note Rating
2023-04-15 20:06:14 UTC - HELPFUL
Rated by Participant: 58F8605ED5BC4024D6E99E4A85010D66268DF34F4A92C7D5BA80474415F92F87
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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