CL65 crossed a runway with another aircraft commencing takeoff roll.

Attributes
ACN	769563
Time
Date	200801
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : cfi pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 198 flight time total : 1632 flight time type : 985
ASRS Report	769172
Events
Anomaly	conflict : ground less severe incursion : runway
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was taxiing out in atlanta. We were given runway 28 for departure. We turned left on taxiway M; and held short of taxiway D per ground instructions. We were told to monitor tower. Tower then said 'at dixie; cross 27R hold short of 27L.' I repeated back the same; and we proceeded across runway 27R. A B757 was on position and hold for runway 27R; and we were told later had been cleared for takeoff. The captain and I both believe we were cleared to cross runway 27R.

Original NASA ASRS Text

Title: CL65 CROSSED A RWY WITH ANOTHER ACFT COMMENCING TKOF ROLL.

Narrative: I WAS TAXIING OUT IN ATLANTA. WE WERE GIVEN RWY 28 FOR DEP. WE TURNED L ON TXWY M; AND HELD SHORT OF TXWY D PER GND INSTRUCTIONS. WE WERE TOLD TO MONITOR TWR. TWR THEN SAID 'AT DIXIE; CROSS 27R HOLD SHORT OF 27L.' I REPEATED BACK THE SAME; AND WE PROCEEDED ACROSS RWY 27R. A B757 WAS ON POS AND HOLD FOR RWY 27R; AND WE WERE TOLD LATER HAD BEEN CLRED FOR TKOF. THE CAPT AND I BOTH BELIEVE WE WERE CLRED TO CROSS RWY 27R.

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.