Narrative:

All prior to takeoff checklists were complete. In anticipation of icing conditions en route I was testing deice and anti- ice system. Received clearance to taxi to runway 17R intersection Y. We did and held short at intersection Y monitoring tower expecting tower to clear us to taxi to runway 13L, the standard departure runway for turboprop and commuter aircraft. Tower cleared an md-80 to position and hold runway 17R full length. Upon hearing tower issue a position and hold clearance, I concluded that tower would either clear us across runway 17R or would give the md-80 a takeoff clearance. I terminated the deice and anti-ice test by shutting down the anti-deice equipment. I did not pay attention to other xmissions from the tower to other aircraft. Tower then issued the following clearance as best as I can remember. Air carrier XXX and air carrier X flight XXX (we're the air carrier X flight) cross runway 17L and taxi to runway 13L. I had 1 engine feathered as per company policy when using high pressure bleed from that engine to help cool the cabin, so crossing the runway 17R took longer than us all. I looked left to check the md-80 still in position and holding, as verified by taxi and landing lights out (it was night). Halfway across the runway I saw the md-80 lights had turned on. I said, 'bummer.' three quarters across the runway the md-80 was rolling towards us. I couldn't understand why he wasn't stopping. I couldn't get across the runway any faster. Finally the md-80 transmitted that he was stopping his takeoff roll because of aircraft crossing runway. I believe tower thought we were holding short of runway 17L, as was the other aircraft that received clearance to taxi to runway 13L. I did not hear tower issue takeoff clearance to the md-80. At this airport, tower routinely issues clrncs to taxi to runways that involves a taxi across active runways with a 'clear to' or 'taxi across runway X taxi to runway Y.' I did receive a non-restr clearance to taxi to a runway but it did omit the additional, by protocol, addendum, 'cross runways X and Y taxi to runway Z.' I didn't catch this omission until I re- hashed the events with my first officer.

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Original NASA ASRS Text

Title: RPTR TAXIED ACROSS AN ACTIVE RWY WITHOUT A CLRNC.

Narrative: ALL PRIOR TO TKOF CHKLISTS WERE COMPLETE. IN ANTICIPATION OF ICING CONDITIONS ENRTE I WAS TESTING DEICE AND ANTI- ICE SYS. RECEIVED CLRNC TO TAXI TO RWY 17R INTXN Y. WE DID AND HELD SHORT AT INTXN Y MONITORING TWR EXPECTING TWR TO CLR US TO TAXI TO RWY 13L, THE STANDARD DEP RWY FOR TURBOPROP AND COMMUTER ACFT. TWR CLRED AN MD-80 TO POS AND HOLD RWY 17R FULL LENGTH. UPON HEARING TWR ISSUE A POS AND HOLD CLRNC, I CONCLUDED THAT TWR WOULD EITHER CLR US ACROSS RWY 17R OR WOULD GIVE THE MD-80 A TKOF CLRNC. I TERMINATED THE DEICE AND ANTI-ICE TEST BY SHUTTING DOWN THE ANTI-DEICE EQUIP. I DID NOT PAY ATTN TO OTHER XMISSIONS FROM THE TWR TO OTHER ACFT. TWR THEN ISSUED THE FOLLOWING CLRNC AS BEST AS I CAN REMEMBER. ACR XXX AND ACR X FLT XXX (WE'RE THE ACR X FLT) CROSS RWY 17L AND TAXI TO RWY 13L. I HAD 1 ENG FEATHERED AS PER COMPANY POLICY WHEN USING HIGH PRESSURE BLEED FROM THAT ENG TO HELP COOL THE CABIN, SO XING THE RWY 17R TOOK LONGER THAN US ALL. I LOOKED L TO CHK THE MD-80 STILL IN POS AND HOLDING, AS VERIFIED BY TAXI AND LNDG LIGHTS OUT (IT WAS NIGHT). HALFWAY ACROSS THE RWY I SAW THE MD-80 LIGHTS HAD TURNED ON. I SAID, 'BUMMER.' THREE QUARTERS ACROSS THE RWY THE MD-80 WAS ROLLING TOWARDS US. I COULDN'T UNDERSTAND WHY HE WASN'T STOPPING. I COULDN'T GET ACROSS THE RWY ANY FASTER. FINALLY THE MD-80 XMITTED THAT HE WAS STOPPING HIS TKOF ROLL BECAUSE OF ACFT XING RWY. I BELIEVE TWR THOUGHT WE WERE HOLDING SHORT OF RWY 17L, AS WAS THE OTHER ACFT THAT RECEIVED CLRNC TO TAXI TO RWY 13L. I DID NOT HEAR TWR ISSUE TKOF CLRNC TO THE MD-80. AT THIS ARPT, TWR ROUTINELY ISSUES CLRNCS TO TAXI TO RWYS THAT INVOLVES A TAXI ACROSS ACTIVE RWYS WITH A 'CLR TO' OR 'TAXI ACROSS RWY X TAXI TO RWY Y.' I DID RECEIVE A NON-RESTR CLRNC TO TAXI TO A RWY BUT IT DID OMIT THE ADDITIONAL, BY PROTOCOL, ADDENDUM, 'CROSS RWYS X AND Y TAXI TO RWY Z.' I DIDN'T CATCH THIS OMISSION UNTIL I RE- HASHED THE EVENTS WITH MY FO.

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.