<< >> NASA ASRS Report 1620336, February 2019

A tower controller and pilot reported the pilot lined up with the wrong runway which caused another aircraft to take evasive action and go around.

Attributes
ACN	1620336
Time
Date	201902
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	VFR Route
Aircraft 2
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 4.0
Person 2
Function	Instructor
Qualification	Flight Crew Commercial Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 68 Flight Crew Total 355 Flight Crew Type 80
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Aircraft X entered the VFR traffic pattern from the northeast. They were sequenced to follow traffic midfield downwind. They reported traffic in sight and I visually observed them following instructions. I was scanning and working other aircraft when aircraft X was on base for runway xxr. I sequenced another aircraft to follow them. I looked back at aircraft X and observed aircraft Y climbing to avoid them as aircraft X had lined up on approach for runway xxl. I corrected the situation and confirmed runway xx right with aircraft X again; while the other controller issued missed approach instructions to aircraft Y. I believe the pilot simply became confused and didn't ask for clarification. If the pilot is unsure of the runway intended for them to land on; they could ask tower to verify before that situation occurs again.

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Original NASA ASRS Text

Title: A Tower Controller and pilot reported the pilot lined up with the wrong runway which caused another aircraft to take evasive action and go around.

Narrative: Aircraft X entered the VFR traffic pattern from the northeast. They were sequenced to follow traffic midfield downwind. They reported traffic in sight and I visually observed them following instructions. I was scanning and working other aircraft when Aircraft X was on base for Runway XXR. I sequenced another aircraft to follow them. I looked back at Aircraft X and observed Aircraft Y climbing to avoid them as Aircraft X had lined up on approach for Runway XXL. I corrected the situation and confirmed Runway XX Right with Aircraft X again; while the other controller issued missed approach instructions to Aircraft Y. I believe the pilot simply became confused and didn't ask for clarification. If the pilot is unsure of the runway intended for them to land on; they could ask Tower to verify before that situation occurs again.

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.