Tower controller described a near runway incursion conflict when after clearing a military flight fo...

Narrative:

Fighter jet Y; who was on the UHF frequency was told to line up and wait on runway xxr. Fighter jet Y said roger. I then gave another aircraft a frequency change and then there was noise on the frequency as if more than one aircraft or vehicle was trying to transmit. I did a scan and cleared fighter jet Y for take off runway xxr and gave him a frequency change all at once. Air carrier X; citation; then said they were over the hold line at the intersection of runway xxr and taxiway E4; which is 2955 ft from the approach end. I told fighter jet Y to; 'cancel take off; hold in position;' but because of the frequency change; which is required from the 7110.65; fighter jet Y did not hear me. At this point it was too late to activate the emergency frequencies and the citation had turned and was on the other side of the hold line. The citation never entered the runway surface. Air carrier X did say he thought the line up and wait was for him.

Original NASA ASRS Text

Title: Tower Controller described a near runway incursion conflict when after clearing a military flight for takeoff and issuing a frequency change; another aircraft mistakenly attempted to depart.

Narrative: Fighter jet Y; who was on the UHF frequency was told to line up and wait on Runway XXR. Fighter jet Y said roger. I then gave another aircraft a frequency change and then there was noise on the frequency as if more than one aircraft or vehicle was trying to transmit. I did a scan and cleared fighter jet Y for take off Runway XXR and gave him a frequency change all at once. Air Carrier X; Citation; then said they were over the hold line at the intersection of Runway XXR and Taxiway E4; which is 2955 FT from the approach end. I told fighter jet Y to; 'Cancel take off; hold in position;' but because of the frequency change; which is required from the 7110.65; fighter jet Y did not hear me. At this point it was too late to activate the emergency frequencies and the Citation had turned and was on the other side of the hold line. The Citation never entered the runway surface. Air Carrier X did say he thought the line up and wait was for him.

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	952956
Time
Date	201106
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Cessna Citation Undifferentiated or Other Model
Operating Under FAR Part	Part 135
Flight Phase	Taxi
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	Fighting Falcon F16
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Person 1
Function	Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Ground Incursion Runway

Tower controller described a near runway incursion conflict when after clearing a military flight for takeoff and issuing a frequency change; another aircraft mistakenly attempted to depart.