Here are the deets on the ROA-CHO flight: Flight departed ROA for IAD, the gear would not retract and a significant fuel burn was added. On approach into IAD the non existant visability would not allow for landing, so the flight diverted and due to the gear extended burn factor, CHO was left as the only suitable alternate. IAD ATC declared the emergancy for the flight and had crash and rescue waiting at CHO.

The captain was very shaken up by the entire gear issue and bad weather conditions at IAD.