<< >> NASA ASRS Report 1242413, February 2015

Lax tower controller reports of false target on a runway and no targets associated with the aircraft on a taxiway for thirteen minutes. Controller also reports of other false targets in various places on the airport.

Attributes
ACN	1242413
Time
Date	201502
Local Time Of Day	0001-0600
Place
Locale Reference	LAX.Tower
State Reference	CA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Widebody Low Wing 4 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Route In Use	None
Flight Plan	IFR
Person 1
Function	Ground
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 12
Events
Anomaly	ATC Issue All Types

Narrative:

Aircraft X pushed on [taxiway] a; creating false target on runway 25L at H6 and on [taxiway] H at H8. Also for 13 minutes when the aircraft was on the taxiway there was no target at all on asde-X! Other false targets; unrelated to aircraft X; but nearly continuous on C [charlie] near aa [alpha-alpha]; and on aa south of E17.improve asde-X; there are false targets continuously on the airport. What are we going to do when there is fog?

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Original NASA ASRS Text

Title: LAX Tower Controller reports of false target on a runway and no targets associated with the aircraft on a taxiway for thirteen minutes. Controller also reports of other false targets in various places on the airport.

Narrative: Aircraft X pushed on [Taxiway] A; creating false target on runway 25L at H6 and on [Taxiway] H at H8. Also for 13 minutes when the aircraft was on the taxiway there was no target at all on ASDE-X! Other false targets; unrelated to Aircraft X; but nearly continuous on C [Charlie] near AA [Alpha-Alpha]; and on AA south of E17.Improve ASDE-X; there are false targets continuously on the airport. What are we going to do when there is fog?

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.