An air carrier md-80 climbed in response to a false TCASII warning.

Attributes
ACN	275155
Time
Date	199406
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bpr airport : dfw
State Reference	TX
Altitude	msl bound lower : 11000 msl bound upper : 11400
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other cruise other
Route In Use	arrival other arrival star : star enroute airway : dfw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	275155
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At XX03Z on the boids 4 arrival at didly intersection at 11000 ft, we received a TCASII TA for a departing dfw aircraft. Moments later we received a TCASII RA showing a target 500 ft below and we initiated the commanded climb to approximately 11400 ft. The target then showed 1200 ft above our aircraft and then disappeared from the TCASII scope. We notified ATC of our climb and then returned to 11000 ft and continued the arrival. ATC did not call out any traffic nor did we visually see any traffic. The WX was broken clouds with isolated cumulus clouds in the area.

Original NASA ASRS Text

Title: AN ACR MD-80 CLBED IN RESPONSE TO A FALSE TCASII WARNING.

Narrative: AT XX03Z ON THE BOIDS 4 ARR AT DIDLY INTXN AT 11000 FT, WE RECEIVED A TCASII TA FOR A DEPARTING DFW ACFT. MOMENTS LATER WE RECEIVED A TCASII RA SHOWING A TARGET 500 FT BELOW AND WE INITIATED THE COMMANDED CLB TO APPROX 11400 FT. THE TARGET THEN SHOWED 1200 FT ABOVE OUR ACFT AND THEN DISAPPEARED FROM THE TCASII SCOPE. WE NOTIFIED ATC OF OUR CLB AND THEN RETURNED TO 11000 FT AND CONTINUED THE ARR. ATC DID NOT CALL OUT ANY TFC NOR DID WE VISUALLY SEE ANY TFC. THE WX WAS BROKEN CLOUDS WITH ISOLATED CUMULUS CLOUDS IN THE AREA.

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.