Small aircraft X had less than standard separation from FAA vehicle crossing runway. System error.

Attributes
ACN	138416
Time
Date	199002
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : alo
State Reference	IA
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : evv
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
ASRS Report	138416
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : ground critical non adherence : required legal separation non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

Runway 24 was active, I was working ground control. An FAA veh called for clearance from the VOR (far side first officer runway 24) to the ramp area. I gave clearance to proceed to the ramp. I did not coordinate with local control. It had been quite some time since runway 24 had been used and it was very slow that day. I was only talking to one taxiing aircraft. The FAA veh crossed the hold short line as small aircraft X was rotating approximately 900' away. The veh crossed the runway under small aircraft X, which was approximately 100' AGL. Causes of the incursion: inattentiveness, incomplete scan, no follow through actions to the original clearance.

Original NASA ASRS Text

Title: SMA X HAD LESS THAN STANDARD SEPARATION FROM FAA VEHICLE CROSSING RWY. SYSTEM ERROR.

Narrative: RWY 24 WAS ACTIVE, I WAS WORKING GND CTL. AN FAA VEH CALLED FOR CLRNC FROM THE VOR (FAR SIDE FO RWY 24) TO THE RAMP AREA. I GAVE CLRNC TO PROCEED TO THE RAMP. I DID NOT COORDINATE WITH LCL CTL. IT HAD BEEN QUITE SOME TIME SINCE RWY 24 HAD BEEN USED AND IT WAS VERY SLOW THAT DAY. I WAS ONLY TALKING TO ONE TAXIING ACFT. THE FAA VEH CROSSED THE HOLD SHORT LINE AS SMA X WAS ROTATING APPROX 900' AWAY. THE VEH CROSSED THE RWY UNDER SMA X, WHICH WAS APPROX 100' AGL. CAUSES OF THE INCURSION: INATTENTIVENESS, INCOMPLETE SCAN, NO FOLLOW THROUGH ACTIONS TO THE ORIGINAL CLRNC.

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.