Bfl tower controller reported ground conflict when an aircraft lined up for a closed runway. Ground ...

Narrative:

Aircraft X was instructed to follow a BE99 and cleared to land rwy 30L. I was working local combined with ground/flight data and taxiing two IFR aircraft to rwy 30L. I heard someone say something along the line of 'is he going to land on me?'. I looked away from the aircraft taxiing and saw aircraft X on final for rwy 30R. I told the aircraft on short final for rwy 30R to go around. Aircraft X was instructed to make left traffic rwy 30R. The pilot then landed on rwy 30L without incident. The pilot called the tower and wanted to know if I cleared him to land on rwy 30L or rwy 30R. I told him I thought I instructed him to follow the BE99 and cleared to land rwy 30L. The pilot stated he had a radio problem and tried to verify the rwy when he saw vehicles on the under-run of rwy 30R.I recommend the airport put portable xs on the runway when it's closed for construction.

Original NASA ASRS Text

Title: BFL Tower Controller reported ground conflict when an aircraft lined up for a closed runway. Ground crew questioned Tower and the Controller sent aircraft around.

Narrative: Aircraft X was instructed to follow a BE99 and cleared to land rwy 30L. I was working local combined with ground/flight data and taxiing two IFR aircraft to rwy 30L. I heard someone say something along the line of 'is he going to land on me?'. I looked away from the aircraft taxiing and saw Aircraft X on final for rwy 30R. I told the aircraft on short final for rwy 30R to go around. Aircraft X was instructed to make left traffic rwy 30R. The pilot then landed on rwy 30L without incident. The pilot called the tower and wanted to know if I cleared him to land on rwy 30L or rwy 30R. I told him I thought I instructed him to follow the BE99 and cleared to land rwy 30L. The pilot stated he had a radio problem and tried to verify the rwy when he saw vehicles on the under-run of rwy 30R.I recommend the airport put portable Xs on the runway when it's closed for construction.

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	1397754
Time
Date	201610
Local Time Of Day	1201-1800
Place
Locale Reference	BFL.Airport
State Reference	CA
Aircraft 1
Make Model Name	Caravan Undifferentiated
Operating Under FAR Part	Part 135
Flight Phase	Descent
Route In Use	None
Flight Plan	VFR
Person 1
Function	Flight Data / Clearance Delivery Ground Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 8
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical Deviation - Procedural Clearance

Bfl tower controller reported ground conflict when an aircraft lined up for a closed runway. Ground crew questioned tower and the controller sent aircraft around.