Narrative:

While conducting [line check] with a return to work first officer; we had a close encounter with a drone. We were on the down-wind approximately 5 NM east of dtw being vectored for a visual approach to [runway] 21L in VMC. We were level at 8;000 feet MSL; speed 250 KIAS; when the first officer observed a drone very quickly go past the right side (his side) of the aircraft at very close range (within a hundred or so feet) and slightly below our altitude. It appeared to be approximately 2 feet in diameter; roughly square shaped; and was green and white in color. We advised ATC and gave basic details of the location; altitude and description. After arrival; and after leaving the aircraft and gate area; I received a call from detroit airport operations and returned to the gate at their request. I met with local law enforcement and provided a description of the event as well as my personal information; flight number; and aircraft 'north' number at their request.

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Original NASA ASRS Text

Title: Regional jet Captain reported encountering a drone while on downwind for landing at Detroit airport.

Narrative: While conducting [line check] with a return to work First Officer; we had a close encounter with a drone. We were on the down-wind approximately 5 NM east of DTW being vectored for a visual approach to [Runway] 21L in VMC. We were level at 8;000 feet MSL; speed 250 KIAS; when the First Officer observed a drone very quickly go past the right side (his side) of the aircraft at very close range (within a hundred or so feet) and slightly below our altitude. It appeared to be approximately 2 feet in diameter; roughly square shaped; and was green and white in color. We advised ATC and gave basic details of the location; altitude and description. After arrival; and after leaving the aircraft and gate area; I received a call from Detroit Airport Operations and returned to the gate at their request. I met with local law enforcement and provided a description of the event as well as my personal information; flight number; and aircraft 'N' number at their request.

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.