Air carrier on climb out has near midair collision with small aircraft.

Attributes
ACN	204426
Time
Date	199203
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lga
State Reference	NY
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lga
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 22700 flight time type : 500
ASRS Report	204426
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 50 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Overfly of small aircraft midfield lga tower control. Medium large transport departing runway 31 lga. During turn to 340 degrees, observed small aircraft pass overhead approximately 200 ft left side 50 ft. Observation took place during frequency change to departure. We were not advised by tower of light aircraft traffic. There was 20 KT headwind, we were light and climbed at a greater than normal angle. I feel that this was a factor in the conflict. If the NOTAMS or publications could note the overhead traffic possibilities, future conflicts and possible tragedies can be avoided. This was not a near miss, but could have been tragic, had we not made the turn to 340 degrees.

Original NASA ASRS Text

Title: ACR ON CLB OUT HAS NMAC WITH SMA.

Narrative: OVERFLY OF SMA MIDFIELD LGA TWR CTL. MLG DEPARTING RWY 31 LGA. DURING TURN TO 340 DEGS, OBSERVED SMA PASS OVERHEAD APPROX 200 FT L SIDE 50 FT. OBSERVATION TOOK PLACE DURING FREQ CHANGE TO DEP. WE WERE NOT ADVISED BY TWR OF LIGHT ACFT TFC. THERE WAS 20 KT HEADWIND, WE WERE LIGHT AND CLBED AT A GREATER THAN NORMAL ANGLE. I FEEL THAT THIS WAS A FACTOR IN THE CONFLICT. IF THE NOTAMS OR PUBLICATIONS COULD NOTE THE OVERHEAD TFC POSSIBILITIES, FUTURE CONFLICTS AND POSSIBLE TRAGEDIES CAN BE AVOIDED. THIS WAS NOT A NEAR MISS, BUT COULD HAVE BEEN TRAGIC, HAD WE NOT MADE THE TURN TO 340 DEGS.

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.