For air transportation taking place before January 1, 2018, this part applies to reportable flights as defined in §234.2 that are held out to the public by certificated air carriers that account for at least 1 percent of domestic scheduled passenger revenues. As stated in §234.7, certain provisions also apply to voluntary reporting of on-time performance by carriers. For air transportation taking place on or after January 1, 2018, this part applies to reportable flights as defined in §234.2 that are held out to the public by certificated air carriers that account for at least 0.5 percent of domestic scheduled passenger revenues. As stated in §234.7, certain provisions also apply to voluntary reporting of on-time performance by carriers.

[Dockt. No. DOT-OST-2014-0056, 81 FR 76826, Nov. 3, 2016]