GA cpr climbing to FL310 at 9000 ft, advised of traffic VFR maintaining 10500 ft. No TCASII return. Near 10000 ft, got TCASII RA showing traffic at 2 O'clock. Began a leveloff and saw high wing cessna pass overhead 200 ft.

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Attributes
ACN	370961
Time
Date	199706
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lfv
State Reference	MA
Altitude	msl bound lower : 9000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : first officer oversight : pic
Qualification	pilot : commercial pilot : atp
Experience	flight time last 90 days : 35 flight time total : 14000 flight time type : 3000
ASRS Report	370961
Person 2
Affiliation	Other
Function	flight crew : captain
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While climbing to assigned altitude of FL310, we were approximately 9000 ft when ATC said we had traffic at 10 O'clock, nebound, indicating 10500 ft VFR. Our TCASII was blank so we visually scanned for the traffic. At approximately 10000 ft, I began to ask for our traffic again when we got a TCASII RA and showed the traffic at 2 O'clock. We began a leveloff and got a visual on a high wing cessna. He passed overhead at approximately 200 ft. If we had not leveled off, I feel we would have had a collision.

Original NASA ASRS Text

Title: GA CPR CLBING TO FL310 AT 9000 FT, ADVISED OF TFC VFR MAINTAINING 10500 FT. NO TCASII RETURN. NEAR 10000 FT, GOT TCASII RA SHOWING TFC AT 2 O'CLOCK. BEGAN A LEVELOFF AND SAW HIGH WING CESSNA PASS OVERHEAD 200 FT.

Narrative: WHILE CLBING TO ASSIGNED ALT OF FL310, WE WERE APPROX 9000 FT WHEN ATC SAID WE HAD TFC AT 10 O'CLOCK, NEBOUND, INDICATING 10500 FT VFR. OUR TCASII WAS BLANK SO WE VISUALLY SCANNED FOR THE TFC. AT APPROX 10000 FT, I BEGAN TO ASK FOR OUR TFC AGAIN WHEN WE GOT A TCASII RA AND SHOWED THE TFC AT 2 O'CLOCK. WE BEGAN A LEVELOFF AND GOT A VISUAL ON A HIGH WING CESSNA. HE PASSED OVERHEAD AT APPROX 200 FT. IF WE HAD NOT LEVELED OFF, I FEEL WE WOULD HAVE HAD A COLLISION.

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.