Air carrier receives RA from TCASII when on ILS final in class B airspace with no TA from tower.

Attributes
ACN	443548
Time
Date	199907
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msp.airport
State Reference	MN
Altitude	msl single value : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : m98.tracon tower : msp.tower
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : multi engine pilot : atp
Experience	flight time last 90 days : 180 flight time total : 15000 flight time type : 747
ASRS Report	443548
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne critical conflict : nmac
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 300
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Msp approach controller xferred us to msp tower at 14 mi. Called tower at 14 mi with no response. Called at 13 mi and was acknowledged by female tower controller. At 5 mi on localizer course and on GS with autoplt engaged, we received a TCASII TA. Traffic on TCASII was 700 ft low to our right. No visual contact made. Then got a TCASII RA. Traffic on TCASII was 300 ft low to our right. First officer got visual of a cessna northbound 300 ft low slightly behind us to our right. First officer disconnected autoplt and reduced vertical speed. RA immediately stopped. Notified msp tower supervisor after landing on a recorded line. We were never notified by tower controller of traffic.

Original NASA ASRS Text

Title: ACR RECEIVES RA FROM TCASII WHEN ON ILS FINAL IN CLASS B AIRSPACE WITH NO TA FROM TWR.

Narrative: MSP APCH CTLR XFERRED US TO MSP TWR AT 14 MI. CALLED TWR AT 14 MI WITH NO RESPONSE. CALLED AT 13 MI AND WAS ACKNOWLEDGED BY FEMALE TWR CTLR. AT 5 MI ON LOC COURSE AND ON GS WITH AUTOPLT ENGAGED, WE RECEIVED A TCASII TA. TFC ON TCASII WAS 700 FT LOW TO OUR R. NO VISUAL CONTACT MADE. THEN GOT A TCASII RA. TFC ON TCASII WAS 300 FT LOW TO OUR R. FO GOT VISUAL OF A CESSNA NBOUND 300 FT LOW SLIGHTLY BEHIND US TO OUR R. FO DISCONNECTED AUTOPLT AND REDUCED VERT SPD. RA IMMEDIATELY STOPPED. NOTIFIED MSP TWR SUPVR AFTER LNDG ON A RECORDED LINE. WE WERE NEVER NOTIFIED BY TWR CTLR OF TFC.

Data retrieved from NASA's ASRS site as of July 2007 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.