Small aircraft came in close proximity to a departure atx within the air traffic area.

Attributes
ACN	135389
Time
Date	199001
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atw
State Reference	WI
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : atw tracon : lan
Operator	common carrier : air taxi
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : initial
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	135389
Person 2
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Atx X departed runway 21 IFR to mke from atw. Before clearing the aircraft for takeoff I scanned the southern quadrant and observed no other aircraft. I changed atx X approximately 1 mi south of the departure end of runway 21 and the crew at that time notified me that an small aircraft had overflown them approximately 200'. I then continued scanning the skies and eventually observed the small aircraft to the west of atx X. I was not in radio contact with the small aircraft. Grb radar and msp radar followed the small aircraft until stephens point where he dropped off radar. I feel the only way to monitor such air traffic area violations and to be able to pass relevant traffic to other aircraft is for atw to be provided a BRITE scope.

Original NASA ASRS Text

Title: SMA CAME IN CLOSE PROX TO A DEP ATX WITHIN THE ATA.

Narrative: ATX X DEPARTED RWY 21 IFR TO MKE FROM ATW. BEFORE CLEARING THE ACFT FOR TKOF I SCANNED THE SOUTHERN QUADRANT AND OBSERVED NO OTHER ACFT. I CHANGED ATX X APPROX 1 MI S OF THE DEP END OF RWY 21 AND THE CREW AT THAT TIME NOTIFIED ME THAT AN SMA HAD OVERFLOWN THEM APPROX 200'. I THEN CONTINUED SCANNING THE SKIES AND EVENTUALLY OBSERVED THE SMA TO THE W OF ATX X. I WAS NOT IN RADIO CONTACT WITH THE SMA. GRB RADAR AND MSP RADAR FOLLOWED THE SMA UNTIL STEPHENS POINT WHERE HE DROPPED OFF RADAR. I FEEL THE ONLY WAY TO MONITOR SUCH ATA VIOLATIONS AND TO BE ABLE TO PASS RELEVANT TFC TO OTHER ACFT IS FOR ATW TO BE PROVIDED A BRITE SCOPE.

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.