Birdwatch Note Rating
2023-04-15 12:55:17 UTC - HELPFUL
Rated by Participant: AFBB1BA9D5BE2BAFD61D1D06A3AF5D3F8E96C62A561798C5E40BFC62C8FCF11C
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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