A320 crew was cleared to cross a runway at bos in front of an aircraft on takeoff roll.

Attributes
ACN	473857
Time
Date	200005
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bos.airport
State Reference	MA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : bos.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 240 flight time total : 9000 flight time type : 500
ASRS Report	473857
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : far non adherence : published procedure
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Taxiing at bos logan. Hold short of runway 33L on taxiway D, for takeoff to west. Air carrier ahead of us cleared to cross runway 27?, we were cleared to cross runway 33L and expedite because traffic would be in position and hold on runway 33L. As soon as possible we started to roll and just crossed hold short line when we noticed exhaust coming from engines on aircraft on runway 33L. We agreed he must be taking off and stopped our aircraft. Just then we hear ATC supervisor say for us to 'stop.' aircraft on runway 33L took off and we were again cleared to cross. ATC acknowledged error and we continued uneventfully. Landing msp and called bos tower as requested. The air carrier on takeoff roll was on a different tower frequency than us (2 different runways). They didn't know we were cleared to cross and we didn't know they were cleared for takeoff.

Original NASA ASRS Text

Title: A320 CREW WAS CLRED TO CROSS A RWY AT BOS IN FRONT OF AN ACFT ON TKOF ROLL.

Narrative: TAXIING AT BOS LOGAN. HOLD SHORT OF RWY 33L ON TXWY D, FOR TKOF TO W. ACR AHEAD OF US CLRED TO CROSS RWY 27?, WE WERE CLRED TO CROSS RWY 33L AND EXPEDITE BECAUSE TFC WOULD BE IN POS AND HOLD ON RWY 33L. ASAP WE STARTED TO ROLL AND JUST CROSSED HOLD SHORT LINE WHEN WE NOTICED EXHAUST COMING FROM ENGS ON ACFT ON RWY 33L. WE AGREED HE MUST BE TAKING OFF AND STOPPED OUR ACFT. JUST THEN WE HEAR ATC SUPVR SAY FOR US TO 'STOP.' ACFT ON RWY 33L TOOK OFF AND WE WERE AGAIN CLRED TO CROSS. ATC ACKNOWLEDGED ERROR AND WE CONTINUED UNEVENTFULLY. LNDG MSP AND CALLED BOS TWR AS REQUESTED. THE ACR ON TKOF ROLL WAS ON A DIFFERENT TWR FREQ THAN US (2 DIFFERENT RWYS). THEY DIDN'T KNOW WE WERE CLRED TO CROSS AND WE DIDN'T KNOW THEY WERE CLRED FOR TKOF.

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.