Local controller receiving OJT described a runway separation error when a foreign aircraft was taxie...

Attributes
ACN	996342
Time
Date	201202
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Citation I/SP (C501)
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	Fighting Falcon F16
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	None
Flight Plan	VFR
Person 1
Function	Local Trainee
Qualification	Air Traffic Control Developmental
Person 2
Function	Instructor Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical Deviation - Procedural Clearance Ground Incursion Runway

Narrative:

An F-16 was on landing roll on runway 11L and I told a C501 to line up and wait on runway 11L. The C501 read back cleared for take off which I did not catch and began a take off roll. The F-16 was at the end of the runway but still on the runway. While I was looking at something else we were notified by ground control that the C501 was on take off roll. When my trainer tried to cancel the C501's take off clearance; he didn't cancel but started an early rotation with the F-16 still on the runway. I probably didn't catch the wrong read back because I diverted my attention to the F-16 who was a hung ordnance still on the runway; and I was coordinating a runway crossing with ground control which ground control cancelled because of the rolling C501. I need to work on hear back read back and give more attention to foreign pilots. I need to be able to actively listen especially when a situation could develop like the incident described. Maybe developmentals should do read back hear back computer based instructions pertaining to the role in air traffic on a regular basis.

Original NASA ASRS Text

Title: Local Controller receiving OJT described a runway separation error when a foreign aircraft was taxied into position to 'line up and wait' but initiated a take off; both the ATC trainee and instructor missed an incorrect read back by the pilot.

Narrative: An F-16 was on landing roll on Runway 11L and I told a C501 to line up and wait on Runway 11L. The C501 read back cleared for take off which I did not catch and began a take off roll. The F-16 was at the end of the runway but still on the runway. While I was looking at something else we were notified by Ground Control that the C501 was on take off roll. When my Trainer tried to cancel the C501's take off clearance; he didn't cancel but started an early rotation with the F-16 still on the runway. I probably didn't catch the wrong read back because I diverted my attention to the F-16 who was a hung ordnance still on the runway; and I was coordinating a runway crossing with Ground Control which Ground Control cancelled because of the rolling C501. I need to work on hear back read back and give more attention to foreign pilots. I need to be able to actively listen especially when a situation could develop like the incident described. Maybe developmentals should do read back hear back computer based instructions pertaining to the role in air traffic on a regular basis.

Data retrieved from NASA's ASRS site as of July 2013 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.

Local controller receiving OJT described a runway separation error when a foreign aircraft was taxied into position to 'line up and wait' but initiated a take off; both the ATC trainee and instructor missed an incorrect read back by the pilot.