Potential conflict between departing DC9 on a converging course with a C172 entering downwind for an intersecting runway. Reporter stated no traffic was issued by the controller.

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Attributes
ACN	372670
Time
Date	199706
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lse
State Reference	WI
Altitude	agl bound lower : 1000 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lse
Operator	general aviation : corporate
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 4700
ASRS Report	372670
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 800 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

I was entering the left downwind for runway 21 and the DC9 came very close as he departed runway 18. I thought the DC9 had already turned out but he was still on the upwind leg. Controller should have called traffic. I should have been more vigilant looking for traffic. DC9 could have been more vigilant.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT BTWN DEPARTING DC9 ON A CONVERGING COURSE WITH A C172 ENTERING DOWNWIND FOR AN INTERSECTING RWY. RPTR STATED NO TFC WAS ISSUED BY THE CTLR.

Narrative: I WAS ENTERING THE L DOWNWIND FOR RWY 21 AND THE DC9 CAME VERY CLOSE AS HE DEPARTED RWY 18. I THOUGHT THE DC9 HAD ALREADY TURNED OUT BUT HE WAS STILL ON THE UPWIND LEG. CTLR SHOULD HAVE CALLED TFC. I SHOULD HAVE BEEN MORE VIGILANT LOOKING FOR TFC. DC9 COULD HAVE BEEN MORE VIGILANT.

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.