"Transport Canada, mirrored by EASA, have issued an Emergency Airworthiness Directive stating, that two recent occurrences involving CRJ9 and CRJ7s showed interference between the main landing gear door and the main landing gear fairing seal could prevent the main landing gear door from opening."From:
http://www.avherald.com/h?article=4327a914&opt=0May shed some light on the rescent gear issues with the CRJ...
The AD is attached below: