DC9 captain taxiing for departure at rap is confused with ATC clearance.

Attributes
ACN	593546
Time
Date	200309
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : rap.airport
State Reference	SD
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : aus.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 230 flight time total : 20000 flight time type : 7000
ASRS Report	593546
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	incursion : taxiway non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Prior to arrival at rap rapid city, south dakota, the first officer and I reviewed the airport information and noted the threshold was displaced as stated in the NOTAMS. Upon departure from rap, we received a taxi clearance 'depart the terminal apron, turn right on taxiway a for departure on runway 32.' I rebriefed that there was a taxiway holding line between 'A5 and A6' on taxiway a. Knowing this, we proceeded down taxiway a. Prior to arriving at taxiway A5, ground control asked us if we were aware of the taxiway holding line between A5 and A6. We stated yes, we were aware. I stopped prior to taxiway A5 and asked the first officer to call ground control to see if we should use taxiway A5 to enter the runway and back taxi for takeoff or continue down taxiway a past the hold line at taxiway a (parallel taxiway) to enter the runway and taxi up to the displaced threshold line and then take off. The ground controller stated 'continue taxiing to the end of taxiway a for departure. When we crossed the taxiway hold line, the controller became irritated and said that was not what he meant. We had both agreed on the instructions.

Original NASA ASRS Text

Title: DC9 CAPT TAXIING FOR DEP AT RAP IS CONFUSED WITH ATC CLRNC.

Narrative: PRIOR TO ARR AT RAP RAPID CITY, S DAKOTA, THE FO AND I REVIEWED THE ARPT INFO AND NOTED THE THRESHOLD WAS DISPLACED AS STATED IN THE NOTAMS. UPON DEP FROM RAP, WE RECEIVED A TAXI CLRNC 'DEPART THE TERMINAL APRON, TURN R ON TXWY A FOR DEP ON RWY 32.' I REBRIEFED THAT THERE WAS A TXWY HOLDING LINE BTWN 'A5 AND A6' ON TXWY A. KNOWING THIS, WE PROCEEDED DOWN TXWY A. PRIOR TO ARRIVING AT TXWY A5, GND CTL ASKED US IF WE WERE AWARE OF THE TXWY HOLDING LINE BTWN A5 AND A6. WE STATED YES, WE WERE AWARE. I STOPPED PRIOR TO TXWY A5 AND ASKED THE FO TO CALL GND CTL TO SEE IF WE SHOULD USE TXWY A5 TO ENTER THE RWY AND BACK TAXI FOR TKOF OR CONTINUE DOWN TXWY A PAST THE HOLD LINE AT TXWY A (PARALLEL TXWY) TO ENTER THE RWY AND TAXI UP TO THE DISPLACED THRESHOLD LINE AND THEN TAKE OFF. THE GND CTLR STATED 'CONTINUE TAXIING TO THE END OF TXWY A FOR DEP. WHEN WE CROSSED THE TXWY HOLD LINE, THE CTLR BECAME IRRITATED AND SAID THAT WAS NOT WHAT HE MEANT. WE HAD BOTH AGREED ON THE INSTRUCTIONS.

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.