Near midair collision between two small aircraft aircraft, one cleared for takeoff on one runway, another making a touch and go on an intersecting runway.

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Attributes
ACN	131251
Time
Date	198912
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : prc
State Reference	AZ
Altitude	agl bound lower : 100 agl bound upper : 150
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : prc tower : pit
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	None
Aircraft 2
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Experience	controller military : 4 controller radar : 1
ASRS Report	131251
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other controllera other other : unspecified cockpit
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated Other
Miss Distance	horizontal : 100 vertical : 50
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I cleared an aircraft for takeoff from an intersecting runway and created a near collision with another on takeoff from the other runway. I had instructed one aircraft for a stop and go, tower will advise on the go. However due to the high workload, I issued those instructions to the wrong aircraft. Prescott ATC tower is a very busy level ii tower. However, there is only one runway active at a time. There is no BRITE radar to help the controllers manage the workload. Corrective actions: build an additional runway so that there will be 2 controllers working the traffic. Install BRITE radar to help manage the traffic safely.

Original NASA ASRS Text

Title: NMAC BETWEEN TWO SMA ACFT, ONE CLEARED FOR TKOF ON ONE RWY, ANOTHER MAKING A TOUCH AND GO ON AN INTERSECTING RWY.

Narrative: I CLRED AN ACFT FOR TKOF FROM AN INTERSECTING RWY AND CREATED A NEAR COLLISION WITH ANOTHER ON TKOF FROM THE OTHER RWY. I HAD INSTRUCTED ONE ACFT FOR A STOP AND GO, TWR WILL ADVISE ON THE GO. HOWEVER DUE TO THE HIGH WORKLOAD, I ISSUED THOSE INSTRUCTIONS TO THE WRONG ACFT. PRESCOTT ATC TWR IS A VERY BUSY LEVEL II TWR. HOWEVER, THERE IS ONLY ONE RWY ACTIVE AT A TIME. THERE IS NO BRITE RADAR TO HELP THE CTLRS MANAGE THE WORKLOAD. CORRECTIVE ACTIONS: BUILD AN ADDITIONAL RWY SO THAT THERE WILL BE 2 CTLRS WORKING THE TFC. INSTALL BRITE RADAR TO HELP MANAGE THE TFC SAFELY.

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.