Air carrier medium large transport responded to TCASII RA while in las TCA.

Attributes
ACN	240252
Time
Date	199304
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : las
State Reference	NV
Altitude	msl bound lower : 8000 msl bound upper : 8500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : las
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
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft
Flight Phase	cruise other cruise other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 13500 flight time type : 9000
ASRS Report	240252
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 600
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Controller advised of VFR traffic at 12 O'clock and closing. He was supposed to be at 7500 ft but my TCASII showed him at 7900 ft. As the TCASII advisory began, I advised TRACON that I was climbing to evade. Level off was at 8500 ft followed by subsequent descent. (No conflict was created by my deviation.) the VFR pilot, when queried by the controller, said he was 'just wandering around.' (on the edge of the TCA.)

Original NASA ASRS Text

Title: ACR MLG RESPONDED TO TCASII RA WHILE IN LAS TCA.

Narrative: CTLR ADVISED OF VFR TFC AT 12 O'CLOCK AND CLOSING. HE WAS SUPPOSED TO BE AT 7500 FT BUT MY TCASII SHOWED HIM AT 7900 FT. AS THE TCASII ADVISORY BEGAN, I ADVISED TRACON THAT I WAS CLBING TO EVADE. LEVEL OFF WAS AT 8500 FT FOLLOWED BY SUBSEQUENT DSCNT. (NO CONFLICT WAS CREATED BY MY DEV.) THE VFR PLT, WHEN QUERIED BY THE CTLR, SAID HE WAS 'JUST WANDERING AROUND.' (ON THE EDGE OF THE TCA.)

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.