ofni.yratilimKMSP KSBN /// Rudder trim microswitch inop. Replaced trim panel. Main cabin door assist inop. Contacted MX and MEL. This was after a plane swap because the company got us a plane with an inop APU and no external air at the gate. Plane got too cold and we decided to refuse the aircraft. unfortunately passengers were onboard and we had to deplane.
