Air carrier X reporter passing close proximity to an unidentified VFR aircraft.

Attributes
ACN	108879
Time
Date	198904
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rdu
State Reference	NC
Altitude	msl bound lower : 9800 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 24
ASRS Report	108879
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 1500 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X had just departed rdu and was wbound, just leveling at 10000' when he came over. I called traffic (another IFR) and issued climb clearance. He then asked about the traffic and I told him the IFR traffic's position south of him. He said traffic was very close. I then observed a VFR target going behind air carrier X. After a few updates, the altitude encoder showed up, 9800'. The VFR evidently saw air carrier X and had just turned his transponder on. The air carrier pilot said he would file a near midair report. I advised the supervisor in charge.

Original NASA ASRS Text

Title: ACR X REPORTER PASSING CLOSE PROX TO AN UNIDENTIFIED VFR ACFT.

Narrative: ACR X HAD JUST DEPARTED RDU AND WAS WBOUND, JUST LEVELING AT 10000' WHEN HE CAME OVER. I CALLED TFC (ANOTHER IFR) AND ISSUED CLB CLRNC. HE THEN ASKED ABOUT THE TFC AND I TOLD HIM THE IFR TFC'S POS S OF HIM. HE SAID TFC WAS VERY CLOSE. I THEN OBSERVED A VFR TARGET GOING BEHIND ACR X. AFTER A FEW UPDATES, THE ALT ENCODER SHOWED UP, 9800'. THE VFR EVIDENTLY SAW ACR X AND HAD JUST TURNED HIS XPONDER ON. THE ACR PLT SAID HE WOULD FILE A NEAR MIDAIR RPT. I ADVISED THE SUPVR IN CHARGE.

Data retrieved from NASA's ASRS site as of August 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.