Aviation officials say a United Airlines flight declared an emergency shortly before landing in Denver with total hydraulic failure.

Flight 418 from San Diego had to be towed to a gate to allow passengers to deplane.

Denver International Airport spokesman Chuck Cannon says the plane landed normally and that no injuries were reported. He says firefighters were waiting along the runway, which is standard procedure when an "Amber Alert" is declared after a pilot reports that there may be a problem with the landing.