ERJ145 captain reported responding to a climb RA when a B747 on approach to a parallel runway straye...

Attributes
ACN	1377510
Time
Date	201607
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Tower
State Reference	US
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Conflict NMAC

Narrative:

Established on final and approaching FAF taffs when TCAS issued an RA climb at greater than 2000 fpm. First officer (first officer) immediately complied and took a/C into a climb. I checked for instrumentation and orientation and observed a B747 jumbo jet strayed from 28C final approach course passed our 27L final approach courses to our right and made its corrective path in turn to get back to 28C final path just few hundred feet below us after we had initiated the climb. Meanwhile ATC also issued a climb instruction which I replied we had already responded to TCAS. We thereafter maintained visual and continued visually to land on 27L.first officer did an excellent job as pilot-flying in compliance with collision avoidance; TCAS; ATC; stabilized approach; VFR; and class B airspace.

Original NASA ASRS Text

Title: ERJ145 Captain reported responding to a climb RA when a B747 on approach to a parallel runway strayed onto their final approach course. Crew continued visually to a normal landing.

Narrative: Established on final and approaching FAF TAFFS when TCAS issued an RA climb at greater than 2000 fpm. F/O (First Officer) immediately complied and took A/C into a climb. I checked for instrumentation and orientation and observed a B747 jumbo jet strayed from 28C final approach course passed our 27L final approach courses to our right and made its corrective path in turn to get back to 28C final path just few hundred feet below us after we had initiated the climb. Meanwhile ATC also issued a climb instruction which I replied we had already responded to TCAS. We thereafter maintained visual and continued visually to land on 27L.F/O did an excellent job as pilot-flying in compliance with collision avoidance; TCAS; ATC; stabilized approach; VFR; and Class B airspace.

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.

ERJ145 captain reported responding to a climb RA when a B747 on approach to a parallel runway strayed onto their final approach course. Crew continued visually to a normal landing.