Widebody transport has TCASII RA on descent for approach.

Attributes
ACN	255357
Time
Date	199310
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 28000 flight time type : 1800
ASRS Report	255357
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 2500 vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

We were cleared to intercept an approximately 10 NM final on the localizer to runway 31R at dfw. We were heading northeast to intercept when advised by approach to expedite descent through 4000 ft. We had been cleared descent out of 4500 ft to 3500 ft. As we acknowledged the clearance to expedite the descent, we got a TCASII warning, first 'traffic, traffic' followed immediately by 'climb, climb.' we broke out between layers as we initiated required maneuver when we saw an medium large transport airline jet climbing towards us. We were able to maintain visual separation with the medium large transport until the conflict was resolved before continuing with the approach. Conflict resolution actions took about 5-10 seconds. We reported the incident to approach and he advised us the medium large transport was going to love field.

Original NASA ASRS Text

Title: WDB HAS TCASII RA ON DSCNT FOR APCH.

Narrative: WE WERE CLRED TO INTERCEPT AN APPROX 10 NM FINAL ON THE LOC TO RWY 31R AT DFW. WE WERE HDG NE TO INTERCEPT WHEN ADVISED BY APCH TO EXPEDITE DSCNT THROUGH 4000 FT. WE HAD BEEN CLRED DSCNT OUT OF 4500 FT TO 3500 FT. AS WE ACKNOWLEDGED THE CLRNC TO EXPEDITE THE DSCNT, WE GOT A TCASII WARNING, FIRST 'TFC, TFC' FOLLOWED IMMEDIATELY BY 'CLB, CLB.' WE BROKE OUT BTWN LAYERS AS WE INITIATED REQUIRED MANEUVER WHEN WE SAW AN MLG AIRLINE JET CLBING TOWARDS US. WE WERE ABLE TO MAINTAIN VISUAL SEPARATION WITH THE MLG UNTIL THE CONFLICT WAS RESOLVED BEFORE CONTINUING WITH THE APCH. CONFLICT RESOLUTION ACTIONS TOOK ABOUT 5-10 SECONDS. WE RPTED THE INCIDENT TO APCH AND HE ADVISED US THE MLG WAS GOING TO LOVE FIELD.

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.