Sjc tower controller reports of a runway incursion with an aircraft landing on the left runway while...

Narrative:

I cleared aircraft X to land on runway 12R. Nct vectored aircraft Y behind aircraft X and applied visual separation correctly. As aircraft Y was flying faster than aircraft X; the nct controller called me and asked if I would move aircraft X to runway 12L. I told him that I would do so. I instructed aircraft X to change to runway 12L and cleared him to land. The pilot replied 'unable'. I cleared him to land on runway 12R and told nct to put aircraft Y on an approach to runway 12L.aircraft X checked on and I cleared him to land on runway 12L. As aircraft X completed his landing roll; I instructed him to hold short of runway 12L for landing traffic. As aircraft Y completed his landing roll; aircraft X said; 'be advised; we're sticking out a little onto runway 12L'. Aircraft Y heard this and said; 'that's ok; we won't hit you.' I should have advised aircraft Y to give aircraft X more space so they could both land on runway 12L. Furthermore; had aircraft X informed me of his position; I would have had time to instruct aircraft Y to go around.

Original NASA ASRS Text

Title: SJC Tower Controller reports of a runway incursion with an aircraft landing on the left runway while the aircraft on the right has passed the hold short lines.

Narrative: I cleared Aircraft X to land on runway 12R. NCT vectored Aircraft Y behind Aircraft X and applied visual separation correctly. As Aircraft Y was flying faster than Aircraft X; the NCT controller called me and asked if I would move Aircraft X to runway 12L. I told him that I would do so. I instructed Aircraft X to change to runway 12L and cleared him to land. The pilot replied 'Unable'. I cleared him to land on runway 12R and told NCT to put Aircraft Y on an approach to runway 12L.Aircraft X checked on and I cleared him to land on runway 12L. As Aircraft X completed his landing roll; I instructed him to hold short of runway 12L for landing traffic. As Aircraft Y completed his landing roll; Aircraft X said; 'Be advised; we're sticking out a little onto runway 12L'. Aircraft Y heard this and said; 'That's OK; we won't hit you.' I should have advised Aircraft Y to give Aircraft X more space so they could both land on runway 12L. Furthermore; had Aircraft X informed me of his position; I would have had time to instruct Aircraft Y to go around.

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.

Attributes
ACN	1222653
Time
Date	201412
Local Time Of Day	0601-1200
Place
Locale Reference	SJC.Airport
State Reference	CA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 6
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Ground Incursion Runway

Sjc tower controller reports of a runway incursion with an aircraft landing on the left runway while the aircraft on the right has passed the hold short lines.