A B777 flight crew accidentally pass hold short line at sfo.

Attributes
ACN	573813
Time
Date	200302
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sfo.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
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 : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 20000 flight time type : 497
ASRS Report	573813
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 250 flight time total : 7400 flight time type : 1064
ASRS Report	573668
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Chart Or Publication ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After landing on runway 28L we exited to taxiway B, and found our gate occupied. ATC cleared us across runways 28L and 28R to hold short of runway 28R on taxiway south. Then cleared 'cross runway 28R, hold short of runway 28L.' taxiway south does not cross runway 28L. There is a hold sign 'ILS runway 28L' on taxiway south. We passed this sign, expecting to see another hold sign prior to the extended edge of runway 28L. We did not see this sign and may have passed into the clearway zone of runway 28L inadvertently. We had never been on this taxiway and found the controller's directions to be confusing in retrospect as the taxiway does not cross runway 28L. ATC did not tell us we had erred. If there is no hold bar and signage other than the 'ILS runway 28R' sign then the controller should make the hold short instructions crystal clear. Particularly since we typically never taxi along this route, the chance of error is increased. For this reason we both had our charts out and had asked the controller numerous times during our taxi where he wanted us to go. Many runways have 2 hold short locations...one marked 'ILS' and another simply marking the runway boundary. We expected to see another hold point past 'ILS runway 28R' sign.

Original NASA ASRS Text

Title: A B777 FLT CREW ACCIDENTALLY PASS HOLD SHORT LINE AT SFO.

Narrative: AFTER LNDG ON RWY 28L WE EXITED TO TXWY B, AND FOUND OUR GATE OCCUPIED. ATC CLRED US ACROSS RWYS 28L AND 28R TO HOLD SHORT OF RWY 28R ON TXWY S. THEN CLRED 'CROSS RWY 28R, HOLD SHORT OF RWY 28L.' TXWY S DOES NOT CROSS RWY 28L. THERE IS A HOLD SIGN 'ILS RWY 28L' ON TXWY S. WE PASSED THIS SIGN, EXPECTING TO SEE ANOTHER HOLD SIGN PRIOR TO THE EXTENDED EDGE OF RWY 28L. WE DID NOT SEE THIS SIGN AND MAY HAVE PASSED INTO THE CLEARWAY ZONE OF RWY 28L INADVERTENTLY. WE HAD NEVER BEEN ON THIS TXWY AND FOUND THE CTLR'S DIRECTIONS TO BE CONFUSING IN RETROSPECT AS THE TXWY DOES NOT CROSS RWY 28L. ATC DID NOT TELL US WE HAD ERRED. IF THERE IS NO HOLD BAR AND SIGNAGE OTHER THAN THE 'ILS RWY 28R' SIGN THEN THE CTLR SHOULD MAKE THE HOLD SHORT INSTRUCTIONS CRYSTAL CLR. PARTICULARLY SINCE WE TYPICALLY NEVER TAXI ALONG THIS RTE, THE CHANCE OF ERROR IS INCREASED. FOR THIS REASON WE BOTH HAD OUR CHARTS OUT AND HAD ASKED THE CTLR NUMEROUS TIMES DURING OUR TAXI WHERE HE WANTED US TO GO. MANY RWYS HAVE 2 HOLD SHORT LOCATIONS...ONE MARKED 'ILS' AND ANOTHER SIMPLY MARKING THE RWY BOUNDARY. WE EXPECTED TO SEE ANOTHER HOLD POINT PAST 'ILS RWY 28R' SIGN.

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.