A TCASII RA flown because of conflict with advisory traffic that was not initially in sight.

Attributes
ACN	488210
Time
Date	200010
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : lga.vor
State Reference	NY
Altitude	msl bound lower : 6500 msl bound upper : 8000
Environment
Flight Conditions	VMC VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : vacating altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	climbout : vacating altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : instrument pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 23000 flight time type : 10000
ASRS Report	488210
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time total : 2700
ASRS Report	488213
Events
Anomaly	conflict : airborne critical non adherence : required legal separation non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	horizontal : 6000 vertical : 300
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

ATC advised us of traffic at 12 O'clock position, then gave us a descent through his altitude. RA activated at 7700 ft commanding a climb. The other aircraft also initiated a climb causing the TCASII to command a descent. Supplemental information from acn 488213: the light plane was climbing same time we were, so the descent was necessary.

Original NASA ASRS Text

Title: A TCASII RA FLOWN BECAUSE OF CONFLICT WITH ADVISORY TFC THAT WAS NOT INITIALLY IN SIGHT.

Narrative: ATC ADVISED US OF TFC AT 12 O'CLOCK POS, THEN GAVE US A DSCNT THROUGH HIS ALT. RA ACTIVATED AT 7700 FT COMMANDING A CLB. THE OTHER ACFT ALSO INITIATED A CLB CAUSING THE TCASII TO COMMAND A DSCNT. SUPPLEMENTAL INFO FROM ACN 488213: THE LIGHT PLANE WAS CLBING SAME TIME WE WERE, SO THE DSCNT WAS NECESSARY.

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.