Narrative:

Unusual attitude recovery at low altitude. Being vectored onto final in atl following a 747. Separation about 5 miles. I think we were cleared to 3;000 feet heading 300 to join runway 28 final and cleared the visual approach. We think around 4;000 feet and a couple miles south of final; flaps were at 20 degrees and about 170 knots and encountered wake turbulence. Initial roll was to the left just a few degrees then all of a sudden hard right roll of at least 130 degrees or possibly more. Saw nothing but ground out my forward windshield. I was pilot flying and turned off the autopilot and pushed full forward on yoke. First officer (first officer) pushed power forward but not sure if he went full power or not. Stick shaker was going off and I think I heard bank angle a couple of times. After shaker stopped I started rolling back out and started a gradual climb back up to glide slope and turned back toward the runway as we had turned a little bit toward the north probably about a 330 heading. Not sure of the recovery altitude but think it was around 3;000 feet (we did receive a low altitude alert from ATC.) my flight bag was upturned; the MEL and my jepp book was on the floor and the knob on my audio control panel was missing. We reported incident to ATC; called flight attendant (flight attendant) to check on passenger and she said all were ok. We decided to continue with approach and land. After landing we called dispatch and maintenance and requested assistance in case of any passenger wound up being injured.not sure if anything could be done to avoid event as I believe current separation procedures were being followed. Maybe a policy change from ATC on separation standards are in order. Upset recovery training works.

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Original NASA ASRS Text

Title: CRJ-200 flight crew reported encountering wake turbulence in trail of a B747 on approach to ATL. Encounter resulted in a low altitude upset; with a bank angle in excess of 130 degrees.

Narrative: Unusual attitude recovery at low altitude. Being vectored onto final in ATL following a 747. Separation about 5 miles. I think we were cleared to 3;000 feet heading 300 to join Runway 28 final and cleared the visual approach. We think around 4;000 feet and a couple miles south of final; flaps were at 20 degrees and about 170 knots and encountered wake turbulence. Initial roll was to the left just a few degrees then all of a sudden hard right roll of at least 130 degrees or possibly more. Saw nothing but ground out my forward windshield. I was pilot flying and turned off the autopilot and pushed full forward on yoke. First Officer (FO) pushed power forward but not sure if he went full power or not. Stick shaker was going off and I think I heard bank angle a couple of times. After shaker stopped I started rolling back out and started a gradual climb back up to glide slope and turned back toward the runway as we had turned a little bit toward the north probably about a 330 heading. Not sure of the recovery altitude but think it was around 3;000 feet (we did receive a low altitude alert from ATC.) My flight bag was upturned; the MEL and my Jepp book was on the floor and the knob on my audio control panel was missing. We reported incident to ATC; called Flight Attendant (FA) to check on PAX and she said all were ok. We decided to continue with approach and land. After landing we called dispatch and maintenance and requested assistance in case of any passenger wound up being injured.Not sure if anything could be done to avoid event as I believe current separation procedures were being followed. Maybe a policy change from ATC on separation standards are in order. Upset recovery training works.

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.