Date: 201502
Local time of day: 0601-1200
Location: ATL.Airport, GA
Flight conditions: VMC
Light: Daylight
Aircraft: Regional Jet 200 ER/LR (CRJ200)
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Initial Approach
Airspace: Class B ATL
ATC / advisory: TRACON A80
Second aircraft: B747 Undifferentiated or Other Model
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Second reporter function: Pilot Not Flying; First Officer
Anomaly: Deviation - Speed All Types; Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Wake Vortex Encounter
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Regained Aircraft Control; Flight Crew Took Evasive Action
Contributing factors: Environment - Non Weather Related; Procedure
Primary problem: Procedure

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.


Second narrative: We were on the intercept for final approach in ATL for runway 28; following a 747. We believe we were cleared down to 3;000 feet on a heading of 300. We started to get a little turbulence and the wing dipped slightly to the left. I believe I stated something about possible wake and then we went inverted with a bank to the right approx. 130 degrees or more with the stick shaker. The nose was pointed slightly down. The Captain immediately started the unusual att. recover procedure. I added power with the stick shaker. The Captain rolled the aircraft back to the left and recovered eventually with a gradual climb. The aircraft was heading a little more to the north now so the Captain started a turn back towards the final approach course. I told ATL we had recovered from an unusual attitude. ATC gave us an altitude alert. We continued the approach with no further wake turbulence.


Synopsis: 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.