Q400
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Conflict Airborne Conflict; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Wake Vortex Encounter
Air Traffic Control Issued Advisory / Alert; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Environment - Non Weather Related; Human Factors
[We were] given an altitude clearance from 5;500 to 4;500 FT. At this point we called preceding aircraft (A320) and airport in sight. [We were] given 'cleared for the visual' Runway 12. As I turned onto final; I was below the glide slope [and] I felt the first signs of wake turbulence. My attempt was to level off and capture the glide slope [and] was also given instructions to slow to 170 KTS. The result was a climb from about 5;200 to 5;800 FT. When we were asked by Approach what our altitude was; we told them. At no time were we above the glide slope. Airport and aircraft remained in sight. [We were] asked to call Departure on the ground for an explanation. They informed me that another aircraft was above me being vectored for another Runway (20) and that my climb was a concern.
[Narrative 2 had no additional information.]
A Q400 experienced wake turbulance from an A320 on approach to YEG.