An American Airlines flight departing Hawaii was hastily ordered to make an “expedited climb” to avoid crashing into mountainous terrain on Wednesday.

The Federal Aviation Administration is currently investigating why an American Airlines flight from Hawaii did not follow an assigned route and was instead forced to perform an “expedited climb” to avoid the terrain in its path, the agency tells Nexstar.

Authorities are investigating the incident after flight AA298 departed Honolulu International Airport on Wednesday morning and had to climb over Kōnāhuanui.