Air carrier X had less than standard separation and near midair collision with aircraft Y. System er...

Attributes
ACN	167219
Time
Date	199012
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : lga
State Reference	NY
Altitude	msl bound lower : 2000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90 tower : lga
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : direct
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 8000 flight time type : 1000
ASRS Report	167219
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 750 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Inter Facility Coordination Failure

Narrative:

Air carrier X takeoff from lga, cleared to climb to 5000'. SID called for right turn on runway 4. Departure cleared left turn to 360 degree when airborne. Noticed an aircraft approaching from right front. We stopped our turn at approximately 020 degree and decreased climb rate almost to 0 FPM. Aircraft passed slightly in front of us and to our left. When clear, we continued our climb and turn to 360 degree. Departure was questioned about the aircraft and stated there was a twin at 2500', but I do not think it passed over the VOR but rather the airport. I feel this problem could have been avoided altogether if tower had delayed our takeoff clearance slightly. I also feel we should have been advised of the traffic before takeoff, much less once airborne. We were never advised.

Original NASA ASRS Text

Title: ACR X HAD LESS THAN STANDARD SEPARATION AND NMAC WITH ACFT Y. SYSTEM ERROR.

Narrative: ACR X TKOF FROM LGA, CLRED TO CLB TO 5000'. SID CALLED FOR R TURN ON RWY 4. DEP CLRED L TURN TO 360 DEG WHEN AIRBORNE. NOTICED AN ACFT APCHING FROM R FRONT. WE STOPPED OUR TURN AT APPROX 020 DEG AND DECREASED CLB RATE ALMOST TO 0 FPM. ACFT PASSED SLIGHTLY IN FRONT OF US AND TO OUR L. WHEN CLR, WE CONTINUED OUR CLB AND TURN TO 360 DEG. DEP WAS QUESTIONED ABOUT THE ACFT AND STATED THERE WAS A TWIN AT 2500', BUT I DO NOT THINK IT PASSED OVER THE VOR BUT RATHER THE ARPT. I FEEL THIS PROB COULD HAVE BEEN AVOIDED ALTOGETHER IF TWR HAD DELAYED OUR TKOF CLRNC SLIGHTLY. I ALSO FEEL WE SHOULD HAVE BEEN ADVISED OF THE TFC BEFORE TKOF, MUCH LESS ONCE AIRBORNE. WE WERE NEVER ADVISED.

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.

Air carrier X had less than standard separation and near midair collision with aircraft Y. System error.