BILLINGS, Mont. (AP) — A United Airlines flight likely encountered severe “clear-air turbulence” over Wyoming when it began to lurch violently en route from Denver to Billings, causing injuries to 11 of the 114 people on board, federal safety investigators said.

A report from the National Transportation Safety Board said the Boeing 737-700 sustained minor damage in the Feb. 17 incident but continued on its way for an uneventful landing.

Recommended Stories

NTSB seeks urgent review of Alaska air operators

Southwest diverts plane due to broken window

Southwest ramps up engine inspections after deadly in-flight failure