http://avherald.com/h?article=41d12193

The crew of an Air Canada Jazz Canadair CRJ-100, registration C-FRIB performing flight QK-8605 from Halifax,NS to Ottawa,ON (Canada), received a gear disagree and nose wheel steering fault message. The crew decided to return to Ottawa, where the airplane landed safely.

The Canadian TSB reported, that maintenance serviced the nose gear oleo and adjusted the left forward nose gear door proximity sensor. The landing gear was operated numerous times before the airplane was returned to service.