When a C172; cleared to cross the active runway at midfield; stopped short of the runway and failed ...

Narrative:

All runways are closed except one (runway 20L/2R). A C172 parked on the east side of the runway contacted ground to go to the active runway. Runway 20L was in use. The aircraft would need to cross runway 20L at midfield and then taxi to the full length of 20L to depart. The ground controller coordinated with the local controller and then instructed the C172 to cross runway 20L at taxiway delta. The C172 pulled to within 25 feet of the runway edge on taxiway delta and stopped. The aircraft could not be raised on the radio. All frequencies were attempted. Light gun was used. During this time local continued to use 20L for operation since the aircraft was not moving. An assistant manager was in the tower and working. When I left the tower the aircraft was still sitting just short of runway edge on taxiway delta facing west.aircraft should have been sent around and no departures allowed while the aircraft was in that position.

Original NASA ASRS Text

Title: When a C172; cleared to cross the active runway at midfield; stopped short of the runway and failed to communicate with ATC Local and Ground controllers continued operations despite the incursion and the inability to determine the pilot's intentions.

Narrative: All runways are closed except one (Runway 20L/2R). A C172 parked on the east side of the runway contacted ground to go to the active runway. Runway 20L was in use. The aircraft would need to cross runway 20L at midfield and then taxi to the full length of 20L to depart. The Ground controller coordinated with the Local controller and then instructed the C172 to cross runway 20L at taxiway Delta. The C172 pulled to within 25 feet of the runway edge on taxiway Delta and stopped. The aircraft could not be raised on the radio. All frequencies were attempted. Light gun was used. During this time Local continued to use 20L for operation since the aircraft was not moving. An assistant manager was in the Tower and working. When I left the Tower the aircraft was still sitting just short of runway edge on taxiway Delta facing west.Aircraft should have been sent around and no departures allowed while the aircraft was in that position.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	914320
Time
Date	201010
Local Time Of Day	0001-0600
Place
Locale Reference	PDK.Airport
State Reference	GA
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Person 1
Function	Other / Unknown
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Published Material / Policy Ground Incursion Runway

When a C172; cleared to cross the active runway at midfield; stopped short of the runway and failed to communicate with ATC local and ground controllers continued operations despite the incursion and the inability to determine the pilot's intentions.