Narrative:

Aircraft X and aircraft Y were both inbound to the airfield. Aircraft X was sequenced to land full stop runway 14. Aircraft Y was sequenced for touch and go on runway 22. As both aircraft approached the filed the certified professional controller (cpc)/in training (it) gave aircraft Y speed reduction and south turns to provide spacing for the aircraft landing runway 14. I then stated don't forget you have all of your tools. By tools I was referring to land and hold short. The winds were right on the line of acceptable for lahso but they were acceptable. Aircraft Y was approximately 1 mile final runway 22 as aircraft X was landing roll on runway 14. As aircraft X reached taxi speed; the cpc/it told him to turn off at intersection A4 or delta. The pilot did not turn off at A4 intersection and I told local control to hold short of Runway04; since it appeared the go around for runway 22 was too late. Aircraft X rolled past delta and through the intersection of both runways. At this time aircraft Y was touching down on runway 22 and the cpc/trainer instructed aircraft Y to go around but it was too late; however aircraft Y came to a full stop short of runway 14.

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Original NASA ASRS Text

Title: SRQ controller reported a runway incursion occurred due to improper LAHSO clearance while providing training.

Narrative: Aircraft X and Aircraft Y were both inbound to the airfield. Aircraft X was sequenced to land full stop Runway 14. Aircraft Y was sequenced for touch and go on Runway 22. As both aircraft approached the filed the Certified Professional Controller (CPC)/In Training (IT) gave Aircraft Y speed reduction and S Turns to provide spacing for the aircraft landing Runway 14. I then stated don't forget you have all of your tools. By tools I was referring to land and hold short. The winds were right on the line of acceptable for LAHSO but they were acceptable. Aircraft Y was approximately 1 mile final Runway 22 as Aircraft X was landing roll on Runway 14. As Aircraft X reached taxi speed; the CPC/it told him to turn off at intersection A4 or Delta. The pilot did not turn off at A4 intersection and I told local control to hold short of Runway04; since it appeared the go around for Runway 22 was too late. Aircraft X rolled past Delta and through the intersection of both runways. At this time Aircraft Y was touching down on Runway 22 and the CPC/trainer instructed Aircraft Y to go around but it was too late; however Aircraft Y came to a full stop short of Runway 14.

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.