TOKYO - A domestic flight of Japan’s All Nippon Airways returned to its departure airport on Jan 13 after a crack was found on the cockpit window of the Boeing 737-800 aircraft midair, a spokesperson for the airline said.

Flight 1182 was en route to Toyama airport but headed back to the Sapporo-New Chitose airport after the crack was found on the outermost of four layers of windows surrounding the cockpit, the spokesperson said.