B737-700
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe; Conflict Ground Conflict; Less Severe; Conflict NMAC
Air Traffic Control Provided Assistance; Air Traffic Control Separated Traffic; Flight Crew Executed Go Around / Missed Approach; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Airspace Structure; Human Factors
Approaching The Airport; I was following a (other carrier) Regional Jet. I was told he was doing 130 knots eight miles from the field. I immediately started to slow but the spacing wasn't good; so Tower told me S-turns to the north were approved; which I did. Spacing looked good so I continued. Tower told the Regional Jet to expedite off at D2 but didn't; and continued all the way down to the end of the runway. I was just about to round out when it was obvious the Challenger wasn't going to clear the runway; so Tower told me to go around. As I was climbing out; I heard Tower tell a Police helicopter to immediately descend. I looked out the windscreen and saw the helicopter right in front of me. It didn't look as though I was going to out climb him; so I immediately initiated a right hand turn to avoid. We never got an RA; but when we cleared the top of him; the TCAS read -200 feet. We continued around in a right traffic pattern and landed without incident.
B737 Captain reported a late turn off of proceeding aircraft resulted in a go around; then  evasive action was necessary on the climb to avoid a collision with a helicopter.