MD11 crew had taxiway incursion at lax.

Attributes
ACN	492000
Time
Date	200011
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 180 flight time total : 15000 flight time type : 2400
ASRS Report	492000
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : taxiway non adherence : published procedure non adherence : company policies non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : issued alert
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Lax taxiing for departure runway 25R, taxiing east on taxiway B, ATC ground advised us hold short of C-9. I replied hold short C-9. After stopping and holding short of C-9, a B757 taxied out C-9 proceeding east on taxiway B. The captain then followed the B757 east on taxiway B and crossed C-9 intersection. The relief pilot and myself questioned the captain prior to crossing C-9 intersection, but could not confirm clearance with ground due to frequency congestion. (Captain stated he thought we were to follow the B757.) ground control then informed us that we were to hold short C-9 intersection. They taxied us over to taxiway C at next intersection and resequenced us, for departure. There were no other aircraft on taxiway B or taxiway C9. The sequencing was due to ATC slot release time. Solution do not move aircraft until all crew members agree on clearance.

Original NASA ASRS Text

Title: MD11 CREW HAD TXWY INCURSION AT LAX.

Narrative: LAX TAXIING FOR DEP RWY 25R, TAXIING E ON TXWY B, ATC GND ADVISED US HOLD SHORT OF C-9. I REPLIED HOLD SHORT C-9. AFTER STOPPING AND HOLDING SHORT OF C-9, A B757 TAXIED OUT C-9 PROCEEDING E ON TXWY B. THE CAPT THEN FOLLOWED THE B757 E ON TXWY B AND CROSSED C-9 INTXN. THE RELIEF PLT AND MYSELF QUESTIONED THE CAPT PRIOR TO XING C-9 INTXN, BUT COULD NOT CONFIRM CLRNC WITH GND DUE TO FREQ CONGESTION. (CAPT STATED HE THOUGHT WE WERE TO FOLLOW THE B757.) GND CTL THEN INFORMED US THAT WE WERE TO HOLD SHORT C-9 INTXN. THEY TAXIED US OVER TO TXWY C AT NEXT INTXN AND RESEQUENCED US, FOR DEP. THERE WERE NO OTHER ACFT ON TXWY B OR TXWY C9. THE SEQUENCING WAS DUE TO ATC SLOT RELEASE TIME. SOLUTION DO NOT MOVE ACFT UNTIL ALL CREW MEMBERS AGREE ON CLRNC.

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.