Agc tower controllers and pilot reported an aircraft entered an active runway at the same time as an...

Attributes
ACN	1468249
Time
Date	201707
Local Time Of Day	1201-1800
Place
Locale Reference	AGC.Tower
State Reference	PA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft Low Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	None
Flight Plan	VFR
Person 1
Function	Ground
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 12
Person 2
Function	Trainee Local
Qualification	Air Traffic Control Developmental
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Ground Incursion Runway

Narrative:

Aircraft X was taxiing out of an FBO ramp and made a left turn to cross the active runway after being told to taxi across the non-active runway. I was looking at a strip while giving a clearance to a different aircraft on frequency while aircraft X crossed runway 28 hold short lines. He was noticed by the local control trainee at the time and he asked me what he was doing. At the moment I told aircraft X to stop! The aircraft stopped and unfortunately aircraft Y was on takeoff roll [and] was forced to abort takeoff. This is a known hot spot on the airport and is depicted on the airport diagram in the AFD. This has been an ongoing problem for years at our airport and our local safety counsel has brought it up numerous times that there needs to be better signage and better markings on the pavement.

Original NASA ASRS Text

Title: AGC Tower controllers and pilot reported an aircraft entered an active runway at the same time as another aircraft was beginning its takeoff roll.

Narrative: Aircraft X was taxiing out of an FBO ramp and made a left turn to cross the active runway after being told to taxi across the non-active runway. I was looking at a strip while giving a clearance to a different aircraft on frequency while Aircraft X crossed runway 28 hold short lines. He was noticed by the local control trainee at the time and he asked me what he was doing. At the moment I told Aircraft X to stop! The aircraft stopped and unfortunately Aircraft Y was on takeoff roll [and] was forced to abort takeoff. This is a known hot spot on the airport and is depicted on the airport diagram in the AFD. This has been an ongoing problem for years at our airport and our local safety counsel has brought it up numerous times that there needs to be better signage and better markings on the pavement.

Data retrieved from NASA's ASRS site 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.

Agc tower controllers and pilot reported an aircraft entered an active runway at the same time as another aircraft was beginning its takeoff roll.