Medium large transport descending toward dfw comes in close conflict with small aircraft.

Attributes
ACN	93540
Time
Date	198808
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : scy
State Reference	TX
Altitude	msl bound lower : 8500 msl bound upper : 8500
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6500 flight time type : 1270
ASRS Report	93540
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 600 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

We were inbound to scy VOR on the 174 degree right descending to 7000' out of approximately 8500', cleared for the scy 9 arrival to cross becky at 7000'. We had been given 1 traffic advisory for traffic at 2 O'clock and 4500' about 2 mins earlier. No contact with traffic due to haze and sunset conditions. At approximately 4 DME a light single engine, low wing, retractable gear aircraft crossed our nose from right to left, heading southwest at our altitude. The range was approximately 600'. No time to avoid or turn. We inquired with approach control as to whether he had traffic at our 9-10 O'clock then. He replied no. It was just the case of he was in front of us and gone in a matter of seconds. So there was no evasive action necessary. Our landing lights were also on at the time. It shows very poor judgement for any VFR pilot to be flying over a corner post to the dfw TCA particularly at an altitude of 8500'. Also, I think it shows the necessity of keeping turbojet traffic arriving at love field at 10000' or higher when landing south instead of driving everyone in at 7000' 40 mi from the airport. Also, any aircraft flying above 3000' AGL needs to have a transponder with mode C capability.

Original NASA ASRS Text

Title: MLG DESCENDING TOWARD DFW COMES IN CLOSE CONFLICT WITH SMA.

Narrative: WE WERE INBND TO SCY VOR ON THE 174 DEG R DSNDING TO 7000' OUT OF APPROX 8500', CLRED FOR THE SCY 9 ARR TO CROSS BECKY AT 7000'. WE HAD BEEN GIVEN 1 TFC ADVISORY FOR TFC AT 2 O'CLOCK AND 4500' ABOUT 2 MINS EARLIER. NO CONTACT WITH TFC DUE TO HAZE AND SUNSET CONDITIONS. AT APPROX 4 DME A LIGHT SINGLE ENG, LOW WING, RETRACTABLE GEAR ACFT CROSSED OUR NOSE FROM RIGHT TO LEFT, HDG SW AT OUR ALT. THE RANGE WAS APPROX 600'. NO TIME TO AVOID OR TURN. WE INQUIRED WITH APCH CTL AS TO WHETHER HE HAD TFC AT OUR 9-10 O'CLOCK THEN. HE REPLIED NO. IT WAS JUST THE CASE OF HE WAS IN FRONT OF US AND GONE IN A MATTER OF SECS. SO THERE WAS NO EVASIVE ACTION NECESSARY. OUR LNDG LIGHTS WERE ALSO ON AT THE TIME. IT SHOWS VERY POOR JUDGEMENT FOR ANY VFR PLT TO BE FLYING OVER A CORNER POST TO THE DFW TCA PARTICULARLY AT AN ALT OF 8500'. ALSO, I THINK IT SHOWS THE NECESSITY OF KEEPING TURBOJET TFC ARRIVING AT LOVE FIELD AT 10000' OR HIGHER WHEN LNDG S INSTEAD OF DRIVING EVERYONE IN AT 7000' 40 MI FROM THE ARPT. ALSO, ANY ACFT FLYING ABOVE 3000' AGL NEEDS TO HAVE A TRANSPONDER WITH MODE C CAPABILITY.

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.