Brickyard 3531 checks in with MSP tower in the last five minutes of the first liveatc.net clip below and the discussion continues after landing into the second clip.
After some checks and double checks, UA 3531 restarted engines and taxied to gate E5.
http://archive-server.liveatc.net/km...2018-0400Z.mp3
http://archive-server.liveatc.net/km...2018-0430Z.mp3
On approach freq Brickyard reports 64 pax, 4 crew, 8300 pounds of fuel, cockpit secure:
http://archive-server.liveatc.net/km...2018-0400Z.mp3