Air carrier climbs as evasive action in response to TCASII RA.

Attributes
ACN	184419
Time
Date	199107
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lga
State Reference	NY
Altitude	msl bound lower : 3600 msl bound upper : 4000
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : ord
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8800 flight time type : 2000
ASRS Report	184419
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 7495 flight time type : 230
ASRS Report	184239
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 12000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

While on radar vectors in new york terminal area (060 heading 4000 ft) I noticed traffic at 12 O'clock 2 mi plus 100 ft on TCASII display. Controller issued right turn to 100 degree then descent to 3000 ft. Passing 3600 ft TCASII issued RA to climb at 200 ft at 300 FPM which we followed. Our turn and climb back to 4000 ft kept us clear of traffic which was never acquired visually. Closest point was about 2 mi from traffic. Landing was uneventful and controller never pointed out traffic location.

Original NASA ASRS Text

Title: ACR CLBS AS EVASIVE ACTION IN RESPONSE TO TCASII RA.

Narrative: WHILE ON RADAR VECTORS IN NEW YORK TERMINAL AREA (060 HDG 4000 FT) I NOTICED TFC AT 12 O'CLOCK 2 MI PLUS 100 FT ON TCASII DISPLAY. CTLR ISSUED R TURN TO 100 DEG THEN DSCNT TO 3000 FT. PASSING 3600 FT TCASII ISSUED RA TO CLB AT 200 FT AT 300 FPM WHICH WE FOLLOWED. OUR TURN AND CLB BACK TO 4000 FT KEPT US CLR OF TFC WHICH WAS NEVER ACQUIRED VISUALLY. CLOSEST POINT WAS ABOUT 2 MI FROM TFC. LNDG WAS UNEVENTFUL AND CTLR NEVER POINTED OUT TFC LOCATION.

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.