Birdwatch Note Rating
2023-04-15 21:34:26 UTC - HELPFUL
Rated by Participant: 273AEF3B03F06403D03EE2AD32BD0F0B18F4B54690ED09E1A1A7537D0C0A1E4C
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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