14 C.F.R. § 323.18 Carriers' obligations when terminating, suspending, or reducing air service.
Title 14 - Aeronautics and Space
Any air carrier that terminates, suspends, or reduces air service, whether or not subject to the notice requirements of this part, shall make reasonable efforts to contact all passengers holding reservations on the affected flights to inform them of the flights' cancellation.
Title 14: Aeronautics and Space
PART 323—TERMINATIONS, SUSPENSIONS, AND REDUCTIONS OF SERVICE
§ 323.18 Carriers' obligations when terminating, suspending, or reducing air service.