Las controller described a near runway intersection error; involving traffic landing runway 19L and ...

Narrative:

Local control 1 (local control) had 2 aircraft in position ready for departure on runway 25R; one of which had a flow time. I (LC2); had aircraft X on approach for runway 19L. I knew LC1 was trying to meet the required flow time for their aircraft; so I told aircraft X to square his turn to final and reduce to final approach speed. LC1 coordinated the runway intersection to me behind aircraft Y. Aircraft Y started take off roll late; I knew it was going to be close if aircraft Y was able to clear the intersection before aircraft X crossed the landing threshold. The supervisor was also aware of the situation; and the decision was made to let aircraft X land. Aircraft Y was airborne passing taxiway A7 (about 800'-900' before the runway intersection) when aircraft X crossed the landing threshold. Recommendation; ambitious flow times by tmu cause controllers to push aircraft out of tight departure holes when they normally would wait. The layout of the airport causes a huge conflict at the runway intersection. This will never go away and will continue to happen unless we can get the 'gast tool' back; which allows this exact situation to become a legal operation.

Original NASA ASRS Text

Title: LAS Controller described a near runway intersection error; involving traffic landing Runway 19L and a departure from Runway 25R; the reporter alleging flow time pressure contributed to the event.

Narrative: Local Control 1 (LC) had 2 aircraft in position ready for departure on Runway 25R; one of which had a flow time. I (LC2); had Aircraft X on approach for Runway 19L. I knew LC1 was trying to meet the required flow time for their aircraft; so I told Aircraft X to square his turn to final and reduce to final approach speed. LC1 coordinated the runway intersection to me behind Aircraft Y. Aircraft Y started take off roll late; I knew it was going to be close if Aircraft Y was able to clear the intersection before Aircraft X crossed the landing threshold. The Supervisor was also aware of the situation; and the decision was made to let Aircraft X land. Aircraft Y was airborne passing Taxiway A7 (about 800'-900' before the runway intersection) when Aircraft X crossed the landing threshold. Recommendation; ambitious flow times by TMU cause controllers to push aircraft out of tight departure holes when they normally would wait. The layout of the airport causes a huge conflict at the runway intersection. This will never go away and will continue to happen unless we can get the 'GAST tool' back; which allows this exact situation to become a legal operation.

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.

Attributes
ACN	988588
Time
Date	201201
Local Time Of Day	0001-0600
Place
Locale Reference	LAS.Tower
State Reference	NV
Environment
Light	Dawn
Aircraft 1
Make Model Name	Beech 1900
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Las controller described a near runway intersection error; involving traffic landing runway 19L and a departure from runway 25R; the reporter alleging flow time pressure contributed to the event.