Talse TCASII warning for air carrier large transport near scy.

Attributes
ACN	176781
Time
Date	199104
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : scy
State Reference	TX
Altitude	msl bound lower : 23000 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw tracon : n90
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 140 flight time total : 15000 flight time type : 860
ASRS Report	176781
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

We were level at FL240. An air carrier large transport was climbing to FL230 from our 1 O'clock position. We were watching him climb on TCAS. About 2 mi from us, we received TA. About 1 mi he showed level at FL230. We received an RA with climb instruction. Because we visually saw him and he showed level at FL230 on TCASII, we did not climb. Air carrier large transport Y flight claimed he passed 200' under us. We were still level at FL240 and the center confirmed he showed 1000' sep between the aircraft.

Original NASA ASRS Text

Title: TALSE TCASII WARNING FOR ACR LGT NEAR SCY.

Narrative: WE WERE LEVEL AT FL240. AN ACR LGT WAS CLBING TO FL230 FROM OUR 1 O'CLOCK POS. WE WERE WATCHING HIM CLB ON TCAS. ABOUT 2 MI FROM US, WE RECEIVED TA. ABOUT 1 MI HE SHOWED LEVEL AT FL230. WE RECEIVED AN RA WITH CLB INSTRUCTION. BECAUSE WE VISUALLY SAW HIM AND HE SHOWED LEVEL AT FL230 ON TCASII, WE DID NOT CLB. ACR LGT Y FLT CLAIMED HE PASSED 200' UNDER US. WE WERE STILL LEVEL AT FL240 AND THE CENTER CONFIRMED HE SHOWED 1000' SEP BTWN THE ACFT.

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.