Narrative:

Flying on the arrival just switched to regional approach completed the in range checklist and through 10;000 ft when the display cool fan quit working followed by electrical smoke/fumes in the cockpit and a display cool caution light in the descent to 3;000 ft. We were abeam the field. Flaps were at 8 and then 20 degrees when told by ATC we were next for landing. Approximately 1;800 ft per minute rate of descent to 3;000 ft. I had the controls and flying the airplane. I asked the captain (ca) to run the QRH for the display cool caution. The captain completed the QRH. Approach switched us to tower. The captain came back up on the radios. We both talked about the electrical smell and didn't know how bad it would get so I agreed that it was best to get the plane on the ground quick. The captain informed the tower we had smoke in the cockpit. He [requested] priority handling and requested direct to runway for immediate landing. The tower cleared us for a visual approach. The captain then contacted the fas (flight attendants); while I had the radios. I did not hear the conversation between the captain and the fas. When the captain was done talking to the fas; I asked if he wanted to don an oxygen mask because of the smoke/fumes and he did so 5 miles from the field.meanwhile; I was hand flying the plane leveled at 3;000 ft on base leg inside the FAF asked for gear down; ca selected the gear; then slowed to 180 kts and asked for flaps 30; ca selected flaps 30. Picked up the PAPI while intercepting the localizer and started the visual descent slightly above GS then corrected. As we slowed through 170 knots; I asked for flaps 45; bug vap and the before landing checklist. Then asked the captain to set the missed approach altitude. Ca had just donned O2 mask and established communication. 4 miles from approach end the ca selected flaps 45; bugged vap; conducted and completed the before landing checklist and set missed approach altitude. We were stabilized at 1;000 ft AGL. I continued flying the aircraft to landing as the electrical fumes were subsiding. The view was unobstructed and clear mostly strong electrical fumes. I could hear the fas shouting instructions in the background as we got closer to the runway.approximately two miles out; ATC asked if we needed assistance and the captain ask for one truck to follow us to the gate. We smoothly landed; normal deceleration with 90 and 60 knot calls. Captain assumed the controls at 60 knots and made a turnoff then held short of [another] runway. The captain [removed his] O2 mask. The first officer made a call; at the captain's request; to the passengers to remain calm and seated. The after landing checklist was completed. I called ramp for a spot. The tower cleared us across [the other runway]. I contacted ground control and reported our assigned spot after crossing. The captain quickly but safely taxied to our gate. A fire truck was following us as precautionary measure. The taxi to the gate was [changed] to get the people off as soon as possible. The electrical fumes were substantially subsided by this point. When arriving at [the] gate the marshallers were not in position and were very slow to react to the situation. The captain called to operations several times to get the marshallers into position as soon as possible. The captain proceeded to taxi as far as safely able then the marshaller taxied us to the gate. The first officer called operations for a gate agent and supervisor to quickly get the gate to the plane for deplaning.once at the gate the captain asked me to run the shutdown checklist. Normal procedures were followed. The captain left his seat to apologize to the passengers for the event. Maintenance was called and the smoke in cockpit reported in the [logbook] by the captain. I called dispatch to inform them of the situation as the passengers left the aircraft. The captain also called dispatch to give further details. No injuries were reported and the aircraft was completely shut down normally. Maintenance soon arrived and talked to the captain while the rest of the crew vacated the aircraft along with our belongings.

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Original NASA ASRS Text

Title: CRJ-900 First Officer reported smoke in the cockpit during an approach.

Narrative: Flying on the arrival just switched to regional approach completed the In Range Checklist and through 10;000 ft when the display cool fan quit working followed by electrical smoke/fumes in the cockpit and a Display Cool caution light in the descent to 3;000 ft. We were abeam the field. Flaps were at 8 and then 20 degrees when told by ATC we were next for landing. Approximately 1;800 ft per minute rate of descent to 3;000 ft. I had the controls and flying the airplane. I asked the Captain (CA) to run the QRH for the Display Cool caution. The Captain completed the QRH. Approach switched us to tower. The Captain came back up on the radios. We both talked about the electrical smell and didn't know how bad it would get so I agreed that it was best to get the plane on the ground quick. The Captain informed the tower we had smoke in the cockpit. He [requested] priority handling and requested direct to runway for immediate landing. The tower cleared us for a visual approach. The Captain then contacted the FAs (Flight Attendants); while I had the radios. I did not hear the conversation between the Captain and the FAs. When the Captain was done talking to the FAs; I asked if he wanted to don an Oxygen mask because of the smoke/fumes and he did so 5 miles from the field.Meanwhile; I was hand flying the plane leveled at 3;000 ft on base leg inside the FAF asked for Gear Down; CA selected the Gear; then slowed to 180 kts and asked for flaps 30; CA selected flaps 30. Picked up the PAPI while intercepting the localizer and started the visual descent slightly above GS then corrected. As we slowed through 170 knots; I asked for flaps 45; bug Vap and the before landing checklist. Then asked the Captain to set the missed approach altitude. CA had just donned O2 mask and established communication. 4 miles from approach end the CA selected flaps 45; bugged Vap; conducted and completed the before landing checklist and set missed approach altitude. We were stabilized at 1;000 ft AGL. I continued flying the aircraft to landing as the electrical fumes were subsiding. The view was unobstructed and clear mostly strong electrical fumes. I could hear the FAs shouting instructions in the background as we got closer to the runway.Approximately two miles out; ATC asked if we needed assistance and the Captain ask for one truck to follow us to the gate. We smoothly landed; normal deceleration with 90 and 60 knot calls. Captain assumed the controls at 60 knots and made a turnoff then held short of [another] runway. The Captain [removed his] O2 mask. The FO made a call; at the captain's request; to the passengers to remain calm and seated. The after landing checklist was completed. I called Ramp for a spot. The tower cleared us across [the other runway]. I contacted ground control and reported our assigned spot after crossing. The Captain quickly but safely taxied to our gate. A fire truck was following us as precautionary measure. The taxi to the gate was [changed] to get the people off as soon as possible. The electrical fumes were substantially subsided by this point. When arriving at [the] gate the marshallers were not in position and were very slow to react to the situation. The Captain called to operations several times to get the marshallers into position ASAP. The Captain proceeded to taxi as far as safely able then the marshaller taxied us to the gate. The FO called operations for a gate agent and supervisor to quickly get the gate to the plane for deplaning.Once at the Gate the captain asked me to run the shutdown checklist. Normal procedures were followed. The Captain left his seat to apologize to the passengers for the event. Maintenance was called and the smoke in cockpit reported in the [logbook] by the captain. I called dispatch to inform them of the situation as the passengers left the aircraft. The Captain also called dispatch to give further details. No injuries were reported and the aircraft was completely shut down normally. Maintenance soon arrived and talked to the Captain while the rest of the crew vacated the aircraft along with our belongings.

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.