Birdwatch Note Rating
2023-04-15 11:50:22 UTC - HELPFUL
Rated by Participant: 86A44982CD47B4D3D1C0B021C8FDCE00F9E9C43A586DA87AFF01E21B1D3CCEA1
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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