ATR 42 flight crew reported after shutdown dense smoke filled the aircraft and an evacuation was com...

Attributes
ACN	1645235
Time
Date	201905
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	ATR 42
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Person 1
Function	First Officer
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Person 2
Function	Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor Ground Event / Encounter Other / Unknown

Narrative:

On visual approach into xl; captain and I noticed pack #1 would fault intermittently and decided we would address the issue on the ground. After landing; we exited off xl and taxied to parking. We were instructed by ramp to park at [the gate]. After 1 minute; captain turned off bleed #1 and shut down engine #1. We pulled into [the gate] and completed our parking checklist flows. At this time; engine #1 was shut down and engine #2 had just been placed in hotel mode. I looked down to grab my checklist and both captain and I smelled a very foul odor. Seconds later the whole flight deck was engulfed in smoke. Captain instructed me to [advise ATC of our situation]; and I queried to verify that he wanted to declare. I then [advised ramp of our situation]. Captain then let flight attendant (flight attendant) know to deplane all the passengers immediately and that we had an emergency. We proceeded with the smoke memory items and put on our oxygen masks. We continued with the on ground engine fire; followed by the on ground emergency exit checklist. Once completed; we deplaned.

Original NASA ASRS Text

Title: ATR 42 flight crew reported after shutdown dense smoke filled the aircraft and an evacuation was commanded.

Narrative: On visual approach into XL; Captain and I noticed pack #1 would fault intermittently and decided we would address the issue on the ground. After landing; we exited off XL and taxied to parking. We were instructed by Ramp to park at [the gate]. After 1 minute; Captain turned off Bleed #1 and shut down engine #1. We pulled into [the gate] and completed our parking checklist flows. At this time; Engine #1 was shut down and Engine #2 had just been placed in Hotel Mode. I looked down to grab my checklist and both Captain and I smelled a very foul odor. Seconds later the whole flight deck was engulfed in smoke. Captain instructed me to [advise ATC of our situation]; and I queried to verify that he wanted to declare. I then [advised Ramp of our situation]. Captain then let FA (Flight Attendant) know to deplane all the passengers immediately and that we had an emergency. We proceeded with the Smoke Memory Items and put on our oxygen masks. We continued with the On Ground Engine Fire; followed by the On Ground Emergency Exit Checklist. Once completed; we deplaned.

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.