A foreign air carrier pilot reported a conflict with traffic on the parallel final approach course.

Attributes
ACN	1664243
Time
Date	201907
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B787 Dreamliner Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 180 Flight Crew Total 16000 Flight Crew Type 7000
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 500 Vertical 200

Narrative:

I send a cordial greeting and I take the opportunity to describe a TCAS event that was presented at aircraft X. In radar vectors we were instructed to intercept the ILS 28L track to the airport. Already established we are reported that if we have a traffic 787 to follow it as a number two; we inform that is possible with a visual separation of approximately 6.7 miles. Subsequently; another B737 traffic is informed in approach to the track ILS 28R. It should be mentioned that we had already intercepted the localizer 28L approach having at present contact with traffic at all times. When approaching approximately 7.7 nm in final I disconnected the automatic pilot and adjust manually towards the left slightly to give us more traffic separation. Since we saw him he approached too much! We even believe that the airplane overshot a little to us. Seeing this; the TCAS mentions the first call; vertical monitor speed; a second later the traffic call alert and later the climb call alert. At that time I follow the TCAS RA to separate of the traffic and following the indications of the TCAS; making a go around. We return to land without any comment of ATC.

Original NASA ASRS Text

Title: A Foreign Air Carrier pilot reported a conflict with traffic on the parallel final approach course.

Narrative: I send a cordial greeting and I take the opportunity to describe a TCAS event that was presented at Aircraft X. In radar vectors we were instructed to intercept the ILS 28L track to the airport. Already established we are reported that if we have a traffic 787 to follow it as a number two; we inform that is possible with a visual separation of approximately 6.7 miles. Subsequently; another B737 traffic is informed in approach to the track ILS 28R. It should be mentioned that we had already intercepted the localizer 28L approach having at present contact with traffic at all times. When approaching approximately 7.7 nm in final I disconnected the automatic pilot and adjust manually towards the left slightly to give us more traffic separation. Since we saw him he approached too much! We even believe that the airplane overshot a little to us. Seeing this; the TCAS mentions the first call; vertical monitor speed; a second later the traffic call alert and later the climb call alert. At that time I follow The TCAS RA to separate of the traffic and following the indications of the TCAS; making a go around. We return to land without any comment of ATC.

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.