Narrative:

We were on final approach for runway 12L in msp. We were assigned 4000' and 170 kts. We were configured with flaps 20. Just prior to glideslope intercept at hamml (10.9 DME); we experienced a sudden and momentary pocket of turbulence; possibly from the preceding aircraft Y's wake. Our aircraft instantly rolled to a 45 degree right bank; and a momentary pitch up attitude of approximately 5 degrees and brief stick shaker and the autopilot disconnected. I reacted immediately pushing the nose over; rolling the wings level and adding max thrust; all simultaneously. The encounter was very sudden and we were able to return to stable flight fairly quickly. Once stable we were still at assigned altitude but fast and were able to slow to assigned speed and engage the autopilot. We then captured the glideslope and finished configuring the aircraft prior to the FAF and made a safe and uneventful landing. I believe it was an encounter of wake turbulence from the aircraft ahead of us. Even though our aircraft experienced the stick shaker; we were at a safe airspeed and we believe it was triggered by the sudden increased load factor associated with the turbulence. Once at the gate we confirmed that there were no injuries and we contacted maintenance to report our encounter with severe turbulence. We encountered a pocket of severe turbulence on approach. I strongly believe it was due to the preceding aircraft's wake.

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Original NASA ASRS Text

Title: CRJ-200 flight crew reported encountering turbulence on approach into MSP that was possibly related to the Medium Transport they were following.

Narrative: We were on final approach for Runway 12L in MSP. We were assigned 4000' and 170 kts. We were configured with flaps 20. Just prior to glideslope intercept at HAMML (10.9 DME); we experienced a sudden and momentary pocket of turbulence; possibly from the preceding Aircraft Y's wake. Our aircraft instantly rolled to a 45 degree right bank; and a momentary pitch up attitude of approximately 5 degrees and brief stick shaker and the autopilot disconnected. I reacted immediately pushing the nose over; rolling the wings level and adding max thrust; all simultaneously. The encounter was very sudden and we were able to return to stable flight fairly quickly. Once stable we were still at assigned altitude but fast and were able to slow to assigned speed and engage the autopilot. We then captured the glideslope and finished configuring the aircraft prior to the FAF and made a safe and uneventful landing. I believe it was an encounter of wake turbulence from the Aircraft ahead of us. Even though our aircraft experienced the stick shaker; we were at a safe airspeed and we believe it was triggered by the sudden increased load factor associated with the turbulence. Once at the gate we confirmed that there were no injuries and we contacted Maintenance to report our encounter with severe turbulence. We encountered a pocket of severe turbulence on approach. I strongly believe it was due to the preceding aircraft's wake.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.