A320 at tist instructed to taxi to an intersection and hold for landing traffic, but incurs runway.

Attributes
ACN	559902
Time
Date	200209
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tist.airport
State Reference	VI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : tist.tower
Operator	common carrier : air carrier
Make Model Name	ATR 42
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar pilot : instrument
Experience	controller radar : 5 controller time certified in position1 : 2.5 flight time total : 200
ASRS Report	559902
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : ground less severe ground encounters other incursion : runway non adherence : clearance non adherence : far non adherence : required legal separation non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : separated traffic
Supplementary
Problem Areas	ATC Human Performance Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	construction : tist.airport procedure or policy : tist.airport

Narrative:

St thomas airport is under construction. Taxiway a has been closed for construction for over 3 months. This construction is causing aircraft to have to back taxi for departure and taxi to a midfield point prior to this. The project is 2 months overdue. Aircraft X was given taxi instructions for the active runway 10. A midfield intersection was issued as the back taxi point. Aircraft was told to taxi to this point and advise ready for back taxi. Aircraft Y flight was on final as aircraft X taxied to this midfield taxiway. As the aircraft approached the intersection, it was apparent that it was not going to stop, but continued onto the runway in order to back taxi. The aircraft was stopped prior to entering runway. This problem is due to the fact that the current setup is confusing for pilots. Overdue construction adds to the chance that this problem will continue.

Original NASA ASRS Text

Title: A320 AT TIST INSTRUCTED TO TAXI TO AN INTXN AND HOLD FOR LNDG TFC, BUT INCURS RWY.

Narrative: ST THOMAS ARPT IS UNDER CONSTRUCTION. TXWY A HAS BEEN CLOSED FOR CONSTRUCTION FOR OVER 3 MONTHS. THIS CONSTRUCTION IS CAUSING ACFT TO HAVE TO BACK TAXI FOR DEP AND TAXI TO A MIDFIELD POINT PRIOR TO THIS. THE PROJECT IS 2 MONTHS OVERDUE. ACFT X WAS GIVEN TAXI INSTRUCTIONS FOR THE ACTIVE RWY 10. A MIDFIELD INTXN WAS ISSUED AS THE BACK TAXI POINT. ACFT WAS TOLD TO TAXI TO THIS POINT AND ADVISE READY FOR BACK TAXI. ACFT Y FLT WAS ON FINAL AS ACFT X TAXIED TO THIS MIDFIELD TXWY. AS THE ACFT APCHED THE INTXN, IT WAS APPARENT THAT IT WAS NOT GOING TO STOP, BUT CONTINUED ONTO THE RWY IN ORDER TO BACK TAXI. THE ACFT WAS STOPPED PRIOR TO ENTERING RWY. THIS PROB IS DUE TO THE FACT THAT THE CURRENT SETUP IS CONFUSING FOR PLTS. OVERDUE CONSTRUCTION ADDS TO THE CHANCE THAT THIS PROB WILL CONTINUE.

Data retrieved from NASA's ASRS site as of July 2007 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.