B737 at bur outbound for departure may have crossed hold short lines.

Attributes
ACN	532336
Time
Date	200112
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bur.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : bur.tower tracon : mco.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : holding
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	landing : go around
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 18000 flight time type : 14000
ASRS Report	532336
Person 2
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 4000 flight time type : 1500
ASRS Report	533309
Events
Anomaly	incursion : runway non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : separated traffic flight crew : executed go around none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

My copilot and myself were ready to taxi for takeoff at bur airport and our clearance from ground control was to 'taxi to runway 33.' not familiar with the location of the hold short line for runway 33, we taxied toward the approach end of runway 33 via the ramp area and an aircraft on final was given by tower a clearance to go around. Tower controller mentioned to us that we had passed the hold short line and then gave us clearance to 'back taxi onto runway 33 and cleared for takeoff.' we were both confused and not aware we had crossed the line. We questioned our mistake with the controller on duty and he said the location of the hold short line was ambiguous and everything was ok. There was no runway incursion. We proceeded to take off and continued on our journey. Upon arrival at our home base, I mentioned the incident to my chief pilot so future misunderstandings with other pilots could be avoided.

Original NASA ASRS Text

Title: B737 AT BUR OUTBOUND FOR DEP MAY HAVE CROSSED HOLD SHORT LINES.

Narrative: MY COPLT AND MYSELF WERE READY TO TAXI FOR TKOF AT BUR ARPT AND OUR CLRNC FROM GND CTL WAS TO 'TAXI TO RWY 33.' NOT FAMILIAR WITH THE LOCATION OF THE HOLD SHORT LINE FOR RWY 33, WE TAXIED TOWARD THE APCH END OF RWY 33 VIA THE RAMP AREA AND AN ACFT ON FINAL WAS GIVEN BY TWR A CLRNC TO GO AROUND. TWR CTLR MENTIONED TO US THAT WE HAD PASSED THE HOLD SHORT LINE AND THEN GAVE US CLRNC TO 'BACK TAXI ONTO RWY 33 AND CLRED FOR TKOF.' WE WERE BOTH CONFUSED AND NOT AWARE WE HAD CROSSED THE LINE. WE QUESTIONED OUR MISTAKE WITH THE CTLR ON DUTY AND HE SAID THE LOCATION OF THE HOLD SHORT LINE WAS AMBIGUOUS AND EVERYTHING WAS OK. THERE WAS NO RWY INCURSION. WE PROCEEDED TO TAKE OFF AND CONTINUED ON OUR JOURNEY. UPON ARR AT OUR HOME BASE, I MENTIONED THE INCIDENT TO MY CHIEF PLT SO FUTURE MISUNDERSTANDINGS WITH OTHER PLTS COULD BE AVOIDED.

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.