Potential conflict as air carrier large transport cleared to climb through occupied altitude of opposite direction traffic. TCASII and controller alert the crew for descent and turn.

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Attributes
ACN	398927
Time
Date	199804
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ewr airport : lga
State Reference	NJ
Altitude	msl bound lower : 9500 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 240 flight time total : 10000 flight time type : 240
ASRS Report	398927
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Departing out of lga, N90 departure control cleared us to 9000 ft originally, then called us back and cleared us to 15000 ft. Approaching 10000 ft, TCASII RA told us to descend, along with a call from ATC to turn right and descend. A plane passed to the left at 10000 ft. ATC cleared us to continue our climb to 15000 ft.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT AS ACR LGT CLRED TO CLB THROUGH OCCUPIED ALT OF OPPOSITE DIRECTION TFC. TCASII AND CTLR ALERT THE CREW FOR DSCNT AND TURN.

Narrative: DEPARTING OUT OF LGA, N90 DEP CTL CLRED US TO 9000 FT ORIGINALLY, THEN CALLED US BACK AND CLRED US TO 15000 FT. APCHING 10000 FT, TCASII RA TOLD US TO DSND, ALONG WITH A CALL FROM ATC TO TURN R AND DSND. A PLANE PASSED TO THE L AT 10000 FT. ATC CLRED US TO CONTINUE OUR CLB TO 15000 FT.

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.