Air carrier Y had less than standard separation from air carrier X. System error. TCASII TA RA evasi...

Attributes
ACN	196018
Time
Date	199112
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : iah
State Reference	TX
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 13500 flight time type : 6000
ASRS Report	196018
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 2000 vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier Y on vectors for approach to iah, at 2000 ft, TCASII said 'traffic, traffic,' followed by 'climb, climb.' we climbed 700 ft and went over on inbound air carrier X, medium large transport. Controller apologized and said the 'winds were bad.'

Original NASA ASRS Text

Title: ACR Y HAD LTSS FROM ACR X. SYS ERROR. TCASII TA RA EVASIVE ACTION TAKEN.

Narrative: ACR Y ON VECTORS FOR APCH TO IAH, AT 2000 FT, TCASII SAID 'TFC, TFC,' FOLLOWED BY 'CLB, CLB.' WE CLBED 700 FT AND WENT OVER ON INBOUND ACR X, MLG. CTLR APOLOGIZED AND SAID THE 'WINDS WERE BAD.'

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.

Air carrier Y had less than standard separation from air carrier X. System error. TCASII TA RA evasive action taken.