From Transport Canada:

2006/03/07
Further Action Required: No
O.P.I.: System Safety
Narrative: ACA 143, an A320 with 102 people on board, was en route from Ottawa to Edmonton and 125 NM north of Winnipeg when the crew declared an emergency due to a problem with the #1 engine. They requested diversion to YWG, where the aircraft landed safely at 0406z. CFR stood down at 0413z and the aircraft taxied to the gate. TSB has been in contact with the company.

Date: 2006/03/08
Further Action Required: No
O.P.I.: System Safety
Narrative: UPDATE TSB reported that the Airbus A320-211, registration C-FFWM operated by Air Canada as flight ACA 143, was cruising en route from Ottawa to Edmonton when the crew received a compressor vane message followed by a #1 engine compressor stall warning. The crew carried out checklist procedures, shut down the engine, declared an emergency, and requested diversion to Winnipeg. The flight landed without further incident. Company maintenance inspected the engine (CFM-56-5A1 s/n 731672) and found compressor shroud rub at the third stage variable stator vane (VSV) location. The engine is being removed and will be sent to Montreal for repair.