Narrative:

On final to runway xx around 500 feet AGL; my first officer and I first started to smell smoke. Initially we thought we were flying through smoke from a fire outside on the ground. There were no signs that the smell was coming from the plane itself. We both scanned the EICAS screens for messages; checked the engine gauges; brake temps; and APU gauges. Nothing was out of the ordinary except the smell. The landing was normal until about 80 or 70 kts when the first officer called out 'smoke.' as pilot flying I was eyes outside and didn't notice it until the first officer called smoke.at first the smoke looked like heavy fog from the humidity but a little more white. The smoke seemed to be coming from the captain side vents and from around the rudder pedals. The first officer side didn't seem to have as much smoke coming out as the captain side. As we decelerated to make our turn onto taxiway A6 the smoke began to get thicker. As I taxied the plane clear of the runway I told the first officer to call the flight attendant. The first officer reported back to me that there was smoke in the cabin as well.once I stopped the plane I had the first officer tell ATC we would be doing an expedited deplaning on the taxiway and to roll the trucks. I then called the flight attendant to see what the status of the cabin was. The flight attendant told me there was a good amount of smoke in the cabin and at that time I told the flight attendant we would do an expedited deplaning using the main cabin door. We ran the qrc for evacuation/expedited deplaning. After getting through the checklist the first officer jumped out of their seat to open the cockpit door; grab the crash axe; and fire extinguisher. I followed right behind them after checking to make sure all switches and engines were off.by the time I saw the cabin there was some smoke; which appeared to be dissipating as I could see back to the lavatory with little issue. The last passengers off were two able body passengers carrying a man who could not walk down the stairs. The first officer followed these passengers outside and began to gather everyone in the grass and away from the airplane and away from where the fire trucks might drive. I walked to the back of the plane to make sure there was no one left. It was at this time I saw both over wing exits were used. One passenger had a small cut on her big toe from dropping the over wing exit door on her foot. She asked for a band-aid and that's all she needed. The firemen said there was still smoke coming out from the rudder pedal area but there was no sign of fire. The firemen said there was no sign of a threat anymore. Once all the passengers were gone we got the over wing doors off the wings and put them inside the plane; I dropped the parking brake; closed the main cabin door; and we towed the plane to the terminal ramp.we do not know the cause of the smoke at this time. We do not know what factors caused this event.depending on what is found in the investigation could lead to improvement of procedures.

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Original NASA ASRS Text

Title: CRJ-200 flight crew reported smoke in the cockpit during landing that resulted in an evacuation.

Narrative: On final to Runway XX around 500 feet AGL; my First Officer and I first started to smell smoke. Initially we thought we were flying through smoke from a fire outside on the ground. There were no signs that the smell was coming from the plane itself. We both scanned the EICAS screens for messages; checked the engine gauges; brake temps; and APU gauges. Nothing was out of the ordinary except the smell. The landing was normal until about 80 or 70 kts when the First Officer called out 'smoke.' As Pilot Flying I was eyes outside and didn't notice it until the First Officer called smoke.At first the smoke looked like heavy fog from the humidity but a little more white. The smoke seemed to be coming from the Captain side vents and from around the rudder pedals. The First Officer side didn't seem to have as much smoke coming out as the Captain side. As we decelerated to make our turn onto Taxiway A6 the smoke began to get thicker. As I taxied the plane clear of the runway I told the First Officer to call the flight attendant. The First Officer reported back to me that there was smoke in the cabin as well.Once I stopped the plane I had the First Officer tell ATC we would be doing an expedited deplaning on the taxiway and to roll the trucks. I then called the flight attendant to see what the status of the cabin was. The flight attendant told me there was a good amount of smoke in the cabin and at that time I told the flight attendant we would do an expedited deplaning using the main cabin door. We ran the QRC for Evacuation/Expedited Deplaning. After getting through the checklist the First Officer jumped out of their seat to open the cockpit door; grab the crash axe; and fire extinguisher. I followed right behind them after checking to make sure all switches and engines were off.By the time I saw the cabin there was some smoke; which appeared to be dissipating as I could see back to the lavatory with little issue. The last passengers off were two able body passengers carrying a man who could not walk down the stairs. The First Officer followed these passengers outside and began to gather everyone in the grass and away from the airplane and away from where the fire trucks might drive. I walked to the back of the plane to make sure there was no one left. It was at this time I saw both over wing exits were used. One passenger had a small cut on her big toe from dropping the over wing exit door on her foot. She asked for a band-aid and that's all she needed. The firemen said there was still smoke coming out from the rudder pedal area but there was no sign of fire. The firemen said there was no sign of a threat anymore. Once all the passengers were gone we got the over wing doors off the wings and put them inside the plane; I dropped the parking brake; closed the main cabin door; and we towed the plane to the terminal ramp.We do not know the cause of the smoke at this time. We do not know what factors caused this event.Depending on what is found in the investigation could lead to improvement of procedures.

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.