Operational error occurred when departure controller turned a B737 off runway 9L to a heading of 220 degrees from the initially assigned departure heading of 90 degrees. An LR25 departing the right runway had been assigned a heading of 120 degrees. The ARTS tag of the LR25 did not automatic acquire. The local controller saw the aircraft automatic acquire level at 5000 ft. The B737 was observed 1 mi northeast of the lear climbing out of 5400 ft.

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Attributes
ACN	327248
Time
Date	199601
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5400
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord tower : ord
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Learjet 25
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 7 controller supervisory : 3
ASRS Report	327248
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 400
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft #1 departed runway 9L on a 90 degree heading. Aircraft #2 departed runway 9R on a 120 degree heading but did not automatic-acquire with an ARTS tag. Departure controller turned aircraft #1 while in tower airspace to a heading of 220 degrees. Aircraft #2 was 1 mi southeast of airport, primary target only and on tower frequency. Local control position very busy due to departures having to cross arrival runway to reach runway 9R for departure, fog and snow made it impossible to visually scan area. The ASDE3 is not yet certified and the old asde barely functions. Aircraft #2 was advised to recycle his transponder. 3 mi southeast I saw the aircraft automatic acquire and at the same time I observed aircraft #1 sbound climbing out of 5400 ft 1 mi northeast of aircraft #2 who was level at 5000 ft.

Original NASA ASRS Text

Title: OPERROR OCCURRED WHEN DEP CTLR TURNED A B737 OFF RWY 9L TO A HDG OF 220 DEGS FROM THE INITIALLY ASSIGNED DEP HDG OF 90 DEGS. AN LR25 DEPARTING THE R RWY HAD BEEN ASSIGNED A HDG OF 120 DEGS. THE ARTS TAG OF THE LR25 DID NOT AUTO ACQUIRE. THE LCL CTLR SAW THE ACFT AUTO ACQUIRE LEVEL AT 5000 FT. THE B737 WAS OBSERVED 1 MI NE OF THE LEAR CLBING OUT OF 5400 FT.

Narrative: ACFT #1 DEPARTED RWY 9L ON A 90 DEG HDG. ACFT #2 DEPARTED RWY 9R ON A 120 DEG HDG BUT DID NOT AUTO-ACQUIRE WITH AN ARTS TAG. DEP CTLR TURNED ACFT #1 WHILE IN TWR AIRSPACE TO A HDG OF 220 DEGS. ACFT #2 WAS 1 MI SE OF ARPT, PRIMARY TARGET ONLY AND ON TWR FREQ. LCL CTL POS VERY BUSY DUE TO DEPS HAVING TO CROSS ARR RWY TO REACH RWY 9R FOR DEP, FOG AND SNOW MADE IT IMPOSSIBLE TO VISUALLY SCAN AREA. THE ASDE3 IS NOT YET CERTIFIED AND THE OLD ASDE BARELY FUNCTIONS. ACFT #2 WAS ADVISED TO RECYCLE HIS XPONDER. 3 MI SE I SAW THE ACFT AUTO ACQUIRE AND AT THE SAME TIME I OBSERVED ACFT #1 SBOUND CLBING OUT OF 5400 FT 1 MI NE OF ACFT #2 WHO WAS LEVEL AT 5000 FT.

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.