Air carrier X crossed hold lines before holding short of runway. Possible pilot deviation.

Attributes
ACN	119590
Time
Date	198908
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sfo
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air taxi
Make Model Name	Light Transport
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Experience	controller non radar : 7
ASRS Report	119590
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe
Independent Detector	other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Air carrier X widebody transport instructed to cross runway 01L, hold short of runway 01R. Atx light transport in takeoff position runway 01R. Frequency/airport very busy, several other aircraft given instructions and clrncs. Atx was cleared for takeoff, advised that widebody transport downfield was holding short. Pilot questioned whether widebody transport really would hold short, as it was approaching hold line under full taxi speed. I asked widebody transport to confirm holding short, which they replied affirmative and simultaneously braked heavily to stop just short of runway. (Later review of tapes confirmed above.) if both atx pilot and myself weren't scanning as closely as we were, incident surely would have occurred, as air carrier X pilots apparently forgot they were supposed to hold short. It was also helpful having both the departing aircraft and crossing aircraft on the same frequency. Had the air carrier X been on ground frequency, he would have been half way across the runway before anyone could get word to them.

Original NASA ASRS Text

Title: ACR X CROSSED HOLD LINES BEFORE HOLDING SHORT OF RWY. POSSIBLE PLT DEVIATION.

Narrative: ACR X WDB INSTRUCTED TO CROSS RWY 01L, HOLD SHORT OF RWY 01R. ATX LTT IN TKOF POSITION RWY 01R. FREQ/ARPT VERY BUSY, SEVERAL OTHER ACFT GIVEN INSTRUCTIONS AND CLRNCS. ATX WAS CLRED FOR TKOF, ADVISED THAT WDB DOWNFIELD WAS HOLDING SHORT. PLT QUESTIONED WHETHER WDB REALLY WOULD HOLD SHORT, AS IT WAS APCHING HOLD LINE UNDER FULL TAXI SPEED. I ASKED WDB TO CONFIRM HOLDING SHORT, WHICH THEY REPLIED AFFIRMATIVE AND SIMULTANEOUSLY BRAKED HEAVILY TO STOP JUST SHORT OF RWY. (LATER REVIEW OF TAPES CONFIRMED ABOVE.) IF BOTH ATX PLT AND MYSELF WEREN'T SCANNING AS CLOSELY AS WE WERE, INCIDENT SURELY WOULD HAVE OCCURRED, AS ACR X PLTS APPARENTLY FORGOT THEY WERE SUPPOSED TO HOLD SHORT. IT WAS ALSO HELPFUL HAVING BOTH THE DEPARTING ACFT AND XING ACFT ON THE SAME FREQ. HAD THE ACR X BEEN ON GND FREQ, HE WOULD HAVE BEEN HALF WAY ACROSS THE RWY BEFORE ANYONE COULD GET WORD TO THEM.

Data retrieved from NASA's ASRS site as of August 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.