Aircraft aborted takeoff when aircraft crossed runway.

Attributes
ACN	124567
Time
Date	198910
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : developmental
ASRS Report	124567
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	conflict : ground critical non adherence : required legal separation non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was training on the local control position. 4 aircraft were given clearance to cross an active runway with traffic holding in position. I was temporarily distracted by an aircraft landing another runway. After the 3RD one had crossed my instructor told me to clear the aircraft in position for takeoff. The last aircraft appeared to be holding short of the active. After takeoff clearance was issued, the last aircraft started towards the runway. I then aborted takeoff of the aircraft that had been cleared. The aircraft crossed the runway 5000' downfield.

Original NASA ASRS Text

Title: ACFT ABORTED TKOF WHEN ACFT CROSSED RWY.

Narrative: I WAS TRAINING ON THE LCL CTL POSITION. 4 ACFT WERE GIVEN CLRNC TO CROSS AN ACTIVE RWY WITH TFC HOLDING IN POSITION. I WAS TEMPORARILY DISTRACTED BY AN ACFT LNDG ANOTHER RWY. AFTER THE 3RD ONE HAD CROSSED MY INSTRUCTOR TOLD ME TO CLEAR THE ACFT IN POSITION FOR TKOF. THE LAST ACFT APPEARED TO BE HOLDING SHORT OF THE ACTIVE. AFTER TKOF CLRNC WAS ISSUED, THE LAST ACFT STARTED TOWARDS THE RWY. I THEN ABORTED TKOF OF THE ACFT THAT HAD BEEN CLRED. THE ACFT CROSSED THE RWY 5000' DOWNFIELD.

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.