Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Conflict NMAC; Deviation / Discrepancy - Procedural Clearance
Flight Crew Executed Go Around / Missed Approach; Flight Crew Took Evasive Action
Airport; Procedure; Human Factors
Parallel visual approaches to [Runway] 16R and [Runway] 16L. Left traffic; an A319 encroached on our side; we had them in sight as they continued to overshoot. We leveled off and executed a go-around as they flew underneath us and overshot our localizer as well. We did not hear any communication from them as they likely were already on Tower and we were still on Approach. ATC then informed us of their encroachment and asked if we wanted to go around. We told them we were in the go-around. We had an estimated separation of [approximately] 200 feet.
On visual approach to Runway 16R in Denver. ATC pointed out traffic on base for [Runway] 16L. Visually acquired traffic and saw him begin to turn for the runway. Everything appeared normal. Got a traffic alert and followed shortly afterward with a RA. The traffic was still in sight and what looked like turning for [Runway] 16L. RAs are pretty common on these two runways and having the aircraft in sight usually makes it a nonevent. However; this time the traffic continued toward us; so we executed a go around. I am guessing on the separation because I was looking out the window; but it seemed to be about 200-300 feet beneath us.
A CRJ Air carrier flight crew reported another carrier overshooting final approach on a parallel runway led to a NMAC and go-around.