<< >> NASA ASRS Report 1334814, February 2016

Controller reported of clearing an aircraft to land on a specific parallel runway. Another aircraft was cleared for departure on the parallel runway; but stopped short and asked tower about landing aircraft on his runway. Controller said it was hard to tell what runway the aircraft was landing on. Aircraft landed exited runway then the departure aircraft departed.

Attributes
ACN	1334814
Time
Date	201602
Local Time Of Day	1801-2400
Place
Locale Reference	BIL.Tower
State Reference	MT
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Final Approach Landing
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport Low Wing 2 Turboprop Eng
Operating Under FAR Part	Part 135
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Developmental
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types Ground Incursion Runway

Narrative:

Aircraft X was cleared to land runway 10L. The pilot read it back correctly. Aircraft X landed runway 10R.aircraft Y was cleared for takeoff runway 10R. Was told about the traffic on final; was landing runway 10L. The pilot read it back correctly. Aircraft Y stopped short of the runway and questioned the aircraft landing runway 10R.I checked the gear down on about a 2 mile final on the aircraft X. Gear was down. Our runways are 750 feet apart; centerline to centerline. It is hard to tell which final the aircraft is on because the tower is too tall and too far set back from the runways to determine exactly what final they are on. I cleared aircraft X to land after aircraft X passed the threshold to ensure a landing clearance to the runway. Turned aircraft X off the runway. Cleared aircraft Y for takeoff.build a new runway that isn't so close to the other runway.

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Original NASA ASRS Text

Title: Controller reported of clearing an aircraft to land on a specific parallel runway. Another aircraft was cleared for departure on the parallel runway; but stopped short and asked Tower about landing aircraft on his runway. Controller said it was hard to tell what runway the aircraft was landing on. Aircraft landed exited runway then the departure aircraft departed.

Narrative: Aircraft X was cleared to land Runway 10L. The pilot read it back correctly. Aircraft X landed Runway 10R.Aircraft Y was cleared for takeoff Runway 10R. Was told about the traffic on final; was landing Runway 10L. The pilot read it back correctly. Aircraft Y stopped short of the runway and questioned the aircraft landing Runway 10R.I checked the gear down on about a 2 mile final on the Aircraft X. Gear was down. Our runways are 750 feet apart; centerline to centerline. It is hard to tell which final the aircraft is on because the Tower is too tall and too far set back from the runways to determine exactly what final they are on. I cleared Aircraft X to land after Aircraft X passed the threshold to ensure a landing clearance to the runway. Turned Aircraft X off the runway. Cleared Aircraft Y for takeoff.Build a new runway that isn't so close to the other runway.

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.