B737 captain reports TCAS RA during ILS approach to runway 35L with aircraft on approach to 35R at d...

Narrative:

Planned a category ii ILS into den runway 35L. We were vectored to final and handed off to den tower on approximately 20 mile final. At 9;000 ft MSL we received a TCAS RA for an aircraft behind and below us on the approach to runway 35R den. I disconnected the autopilot and complied with the RA. The RA continued for approximately 30 seconds. When it was becoming unlikely we would be able to continue the approach due to being high; I asked the first officer to tell the tower we needed to go around due to a TCAS RA. The response from the tower was; 'you are on a radar monitored approach;' implying we did not need to comply with the RA and to continue the approach. A few seconds after speaking with tower; the RA was resolved and I asked for the gear to be lowered in an attempt to capture the GS. It became obvious that was not going to happen in time for a stabilized approach so I had the first officer tell the tower we were going missed approach; at which time the tower asked us to level at 7;000 ft and gave us a vector.

Original NASA ASRS Text

Title: B737 Captain reports TCAS RA during ILS approach to Runway 35L with aircraft on approach to 35R at DEN. RA is complied with and eventual go-around results. Controller questions need for RA compliance and go-around.

Narrative: Planned a Category II ILS into DEN Runway 35L. We were vectored to final and handed off to DEN Tower on approximately 20 mile final. At 9;000 FT MSL we received a TCAS RA for an aircraft behind and below us on the approach to Runway 35R DEN. I disconnected the autopilot and complied with the RA. The RA continued for approximately 30 seconds. When it was becoming unlikely we would be able to continue the approach due to being high; I asked the First Officer to tell the Tower we needed to go around due to a TCAS RA. The response from the Tower was; 'you are on a radar monitored approach;' implying we did not need to comply with the RA and to continue the approach. A few seconds after speaking with Tower; the RA was resolved and I asked for the gear to be lowered in an attempt to capture the GS. It became obvious that was not going to happen in time for a stabilized approach so I had the First Officer tell the Tower we were going missed approach; at which time the Tower asked us to level at 7;000 FT and gave us a vector.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	831898
Time
Date	200904
Local Time Of Day	0601-1200
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	Landing Initial Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Experience	Flight Crew Last 90 Days 210 Flight Crew Type 8000
Events
Anomaly	Conflict Airborne Conflict

B737 captain reports TCAS RA during ILS approach to runway 35L with aircraft on approach to 35R at den. RA is complied with and eventual go-around results. Controller questions need for RA compliance and go-around.