Sorry about the misuse of the term "upgrade". I meant the A320 or even the larger A321 more as an upgrade of newer design, not necessarily in the same class.
As for the AD, best you look at the IASA site as per link below -
http://www.iasa.com.au/folders/menu/index.htm and select the latest additions link on the left, then scroll to 13-Mar-05 for the heading "The Air Transat A310 Rudder Loss".
John