Birdwatch Note Rating
2024-11-20 19:51:14 UTC - HELPFUL
Rated by Participant: A6EB8D05E2A119B932CF3DE459C3F1BE04BD8FC600F1052969EB3EBC2930E453
Participant Details
Original Note:
The combination of water vapor in aircraft engine exhaust and the low ambient temperatures that often exists at high altitudes allows the formation of contrails. Contrails are composed primarily of ice crystals, and do not pose health risks to humans. https://www.faa.gov/sites/faa.gov/files/regulations_policies/policy_guidance/envir_policy/contrails.pdf
All Note Details