Narrative:

I was the flying pilot on descent below 10;000 feet being vectored for approach to 08L into mia. We had initially planned and briefed landing runway 09 however we were assigned runway 08L due to an emergency on runway 09. Me and the captain were discussing which type of approach to use. I was flying while the captain was heads down setting up the approach in the FMS. Initially we received a TA. The captain instructed to me to start turning left. I used heading select and turned the airplane about 25 degrees to the left of our current course. As we started to turn we then got an RA 'climb'. I disconnected the autopilot and started climbing. At that point the captain took over the airplane and I started looking at my one o'clock for the traffic. We then received a climb now RA. I kept looking and finally saw the other traffic pass right underneath us at our 1 to 2 o'clock. I would say he was less than 1;500 feet laterally and 300 to 400 feet below vertically! I was really shocked at how close he was. If it was any closer I would say it was a near midair collision. The captain never saw the traffic as he was busy managing the RA maneuver.

Google
 

Original NASA ASRS Text

Title: Air Carrier flight crew reported receiving an RA for nearby traffic while ATC was handling an emergency at their destination.

Narrative: I was the flying pilot on descent below 10;000 feet being vectored for approach to 08L into MIA. We had initially planned and briefed landing runway 09 however we were assigned runway 08L due to an emergency on runway 09. Me and the captain were discussing which type of approach to use. I was flying while the captain was heads down setting up the approach in the FMS. Initially we received a TA. The captain instructed to me to start turning left. I used heading select and turned the airplane about 25 degrees to the left of our current course. As we started to turn we then got an RA 'climb'. I disconnected the autopilot and started climbing. At that point the captain took over the airplane and I started looking at my one o'clock for the traffic. We then received a climb now RA. I kept looking and finally saw the other traffic pass right underneath us at our 1 to 2 o'clock. I would say he was less than 1;500 feet laterally and 300 to 400 feet below vertically! I was really shocked at how close he was. If it was any closer I would say it was a near midair collision. The captain never saw the traffic as he was busy managing the RA maneuver.

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.