Officials in Colorado say a jet carrying 74 people made an emergency landing at the Aspen airport after smoke entered the pilot's cabin.

Pitkin County Sheriff's Deputy Alex Burchetta says SkyWest Airlines flight 5940 made a safe landing Sunday afternoon and there were no reports of injury among the 70 passengers and four crew members.

Marissa Snow, spokeswoman for the St. George, Utah-based airline, tells the Glenwood Springs Post Independent the emergency occurred shortly after the aircraft left Aspen en route to Denver.

Aspen airport aviation director Jim Elwood says the smoke was caused by a faulty air conditioner.

Officials say the conditioner was repaired and the Canadair Regional Jet 700 continued its flight to Denver later in the afternoon.