Flight crew of cpr mdt aircraft had near midair collision with small aircraft on approach to cak.

Attributes
ACN	184104
Time
Date	199107
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cak
State Reference	OH
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cak tower : abq
Operator	general aviation : corporate
Make Model Name	Medium Transport
Navigation In Use	Other Other
Flight Phase	cruise other descent other
Route In Use	arrival other enroute airway : cak
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : commercial
Experience	flight time last 90 days : 75 flight time total : 12000 flight time type : 500
ASRS Report	184104
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 75 flight time total : 4000 flight time type : 300
ASRS Report	184408
Events
Anomaly	conflict : nmac
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew Other
Miss Distance	horizontal : 200 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While being vectored to cak airport for a visual approach, approach control gave us a descent clearance to 3000 ft MSL. He subsequently reclred us to stop at 7000 ft and called VFR traffic crossing right to left at 6500 ft. We were level at 7000 ft for approximately 2 mins when we saw the previously called traffic approximately 200 ft off our right wing and 100 ft below crossing 90 degree to our path right to left. I asked the controller about the aircraft and he said his transponder now indicated 6900 ft but he had not noticed because he was busy doing something else. We did not see the traffic until we did because of haze and our workload. Ironically if the controller had not stopped our descent at 7000 ft we would have been thousands of ft below the 6500/6900 ft traffic. It would seem to me once ATC issued an altitude/vector for separation (even from VFR traffic) they should assume responsibility to continue to provide separation but that is not the case in an IFR and VFR traffic situation. See and be seen.

Original NASA ASRS Text

Title: FLC OF CPR MDT ACFT HAD NMAC WITH SMA ON APCH TO CAK.

Narrative: WHILE BEING VECTORED TO CAK ARPT FOR A VISUAL APCH, APCH CTL GAVE US A DSCNT CLRNC TO 3000 FT MSL. HE SUBSEQUENTLY RECLRED US TO STOP AT 7000 FT AND CALLED VFR TFC XING R TO L AT 6500 FT. WE WERE LEVEL AT 7000 FT FOR APPROX 2 MINS WHEN WE SAW THE PREVIOUSLY CALLED TFC APPROX 200 FT OFF OUR R WING AND 100 FT BELOW XING 90 DEG TO OUR PATH R TO L. I ASKED THE CTLR ABOUT THE ACFT AND HE SAID HIS TRANSPONDER NOW INDICATED 6900 FT BUT HE HAD NOT NOTICED BECAUSE HE WAS BUSY DOING SOMETHING ELSE. WE DID NOT SEE THE TFC UNTIL WE DID BECAUSE OF HAZE AND OUR WORKLOAD. IRONICALLY IF THE CTLR HAD NOT STOPPED OUR DSCNT AT 7000 FT WE WOULD HAVE BEEN THOUSANDS OF FT BELOW THE 6500/6900 FT TFC. IT WOULD SEEM TO ME ONCE ATC ISSUED AN ALT/VECTOR FOR SEPARATION (EVEN FROM VFR TFC) THEY SHOULD ASSUME RESPONSIBILITY TO CONTINUE TO PROVIDE SEPARATION BUT THAT IS NOT THE CASE IN AN IFR AND VFR TFC SITUATION. SEE AND BE SEEN.

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.