Flight crew is instructed to line up and wait after landing aircraft on final. As crew begins taxi t...

Narrative:

We were instructed to taxi to the runway 26R holding point at A14; and inform the tower when ready. We called the tower and were instructed to line up and wait after the arriving A340 on final. I was communicating with ATC and acknowledged the clearance. The A340 was on a long final and the captain elected to stop at the CAT2 hold line instead of the CAT1 line. I was aware of this but did not say anything; because I didn't think it was worth opening up a can of worms regarding where to stop the airplane; in a critical point in the takeoff environment; and wanted to concentrate on what was going on near the runway and not producing unnecessary discussion on where to stop the airplane. After all we had not encroached on the runway and could always move up if so requested. The tower then asked us to move up to the runway hold short line; but we did not hear any request to hold short. It seemed reasonable to us that the tower simply wanted us up to the hold short line so as to expedite our taxiing on to the runway after the landing traffic. I told the tower we were moving up; but never acknowledged any hold short request; which the tower did not question. Evidently the tower wanted us to move up to the hold short line to get another aircraft out from another intersection off to our right. When the A340 landed we began to taxi into position when we saw the other airplane off to our right do the same. The captain stopped and the other plane took the runway; however we had crossed the hold short line. We were then cleared for takeoff; without incident. The tower then apologized for the confusion when we were handed off to departure. Our clearance to initially position and hold was never canceled; nor were we ever instructed to hold short of the runway; and if we were the tower never questioned or asked us to confirm a hold short request.

Original NASA ASRS Text

Title: FLIGHT CREW IS INSTRUCTED TO LINE UP AND WAIT AFTER LANDING AIRCRAFT ON FINAL. AS CREW BEGINS TAXI THEY NOTICE ANOTHER AIRCRAFT DOING THE SAME; ONE TAXIWAY WEST. TOWER HAD GIVEN TWO AIRCRAFT THE SAME CLEARANCE.

Narrative: WE WERE INSTRUCTED TO TAXI TO THE RWY 26R HOLDING POINT AT A14; AND INFORM THE TWR WHEN READY. WE CALLED THE TWR AND WERE INSTRUCTED TO LINE UP AND WAIT AFTER THE ARRIVING A340 ON FINAL. I WAS COMMUNICATING WITH ATC AND ACKNOWLEDGED THE CLRNC. THE A340 WAS ON A LONG FINAL AND THE CAPT ELECTED TO STOP AT THE CAT2 HOLD LINE INSTEAD OF THE CAT1 LINE. I WAS AWARE OF THIS BUT DID NOT SAY ANYTHING; BECAUSE I DIDN'T THINK IT WAS WORTH OPENING UP A CAN OF WORMS REGARDING WHERE TO STOP THE AIRPLANE; IN A CRITICAL POINT IN THE TKOF ENVIRONMENT; AND WANTED TO CONCENTRATE ON WHAT WAS GOING ON NEAR THE RWY AND NOT PRODUCING UNNECESSARY DISCUSSION ON WHERE TO STOP THE AIRPLANE. AFTER ALL WE HAD NOT ENCROACHED ON THE RWY AND COULD ALWAYS MOVE UP IF SO REQUESTED. THE TWR THEN ASKED US TO MOVE UP TO THE RWY HOLD SHORT LINE; BUT WE DID NOT HEAR ANY REQUEST TO HOLD SHORT. IT SEEMED REASONABLE TO US THAT THE TWR SIMPLY WANTED US UP TO THE HOLD SHORT LINE SO AS TO EXPEDITE OUR TAXIING ON TO THE RWY AFTER THE LNDG TFC. I TOLD THE TWR WE WERE MOVING UP; BUT NEVER ACKNOWLEDGED ANY HOLD SHORT REQUEST; WHICH THE TWR DID NOT QUESTION. EVIDENTLY THE TWR WANTED US TO MOVE UP TO THE HOLD SHORT LINE TO GET ANOTHER ACFT OUT FROM ANOTHER INTXN OFF TO OUR R. WHEN THE A340 LANDED WE BEGAN TO TAXI INTO POS WHEN WE SAW THE OTHER AIRPLANE OFF TO OUR R DO THE SAME. THE CAPT STOPPED AND THE OTHER PLANE TOOK THE RWY; HOWEVER WE HAD CROSSED THE HOLD SHORT LINE. WE WERE THEN CLRED FOR TKOF; WITHOUT INCIDENT. THE TWR THEN APOLOGIZED FOR THE CONFUSION WHEN WE WERE HANDED OFF TO DEP. OUR CLRNC TO INITIALLY POS AND HOLD WAS NEVER CANCELED; NOR WERE WE EVER INSTRUCTED TO HOLD SHORT OF THE RWY; AND IF WE WERE THE TWR NEVER QUESTIONED OR ASKED US TO CONFIRM A HOLD SHORT REQUEST.

Data retrieved from NASA's ASRS site as of May 2009 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.

Attributes
ACN	810413
Time
Date	200811
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 50 flight time total : 14000 flight time type : 4200
ASRS Report	810413
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	incursion : runway
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Flight crew is instructed to line up and wait after landing aircraft on final. As crew begins taxi they notice another aircraft doing the same; one taxiway west. Tower had given two aircraft the same clearance.