Tower controller reported that failure to cancel takeoff clearance with a priority aircraft inbound ...

Attributes
ACN	1719214
Time
Date	202001
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	None
Flight Plan	VFR
Aircraft 2
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Person 1
Function	Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 2
Events
Anomaly	Aircraft Equipment Problem Critical Conflict Ground Conflict Less Severe Ground Incursion Runway

Narrative:

I was controller in charge; I had just got on position. There were no aircraft in the class D airspace. There were two aircraft departing. The first aircraft was aircraft X headed VFR to ZZZ. He was cleared for takeoff on runway xx. Approximately a half mile from the airport he was switched to departure. The local controller then cleared aircraft Y; for departure on runway xx. Right after he did this departure called and said that aircraft X requested priority handling and had an engine out. The local controller let departure clear the aircraft to land runway yy. In the meantime; he gave aircraft Y a 230 heading but did not cancel his takeoff clearance. Aircraft X landed runway yy with aircraft Y holding on the runway. Take off clearance was canceled but late.I think more training in case of unusual circumstances is needed especially when the traffic is so slow.

Original NASA ASRS Text

Title: Tower Controller reported that failure to cancel takeoff clearance with a priority aircraft inbound resulted in a runway incursion.

Narrative: I was CIC; I had just got on position. There were no aircraft in the Class D airspace. There were two aircraft departing. The first aircraft was Aircraft X headed VFR to ZZZ. He was cleared for takeoff on Runway XX. Approximately a half mile from the airport he was switched to departure. The Local Controller then cleared Aircraft Y; for departure on Runway XX. Right after he did this departure called and said that Aircraft X requested priority handling and had an engine out. The Local Controller let departure clear the aircraft to land Runway YY. In the meantime; he gave Aircraft Y a 230 heading but did not cancel his takeoff clearance. Aircraft X landed Runway YY with Aircraft Y holding on the runway. Take off clearance was canceled but late.I think more training in case of unusual circumstances is needed especially when the traffic is so slow.

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.

Tower controller reported that failure to cancel takeoff clearance with a priority aircraft inbound resulted in a runway incursion.