Delta MD90 at Denver on Oct 17th 2014, hydraulic failure

A Delta Airlines McDonnell Douglas MD-90, registration N937DN performing flight DL-1645 from Detroit,MI to Denver,CO (USA), was on approach to Denver when the crew reported a hydraulic failure. The crew performed an alternate gear extension and landed safely on runway 17L. Emergency services attending the aircraft reported seeing nothing abnormal, in particular no leaks, except that the gear doors were open.

The aircraft was towed to the apron.