Narrative:

Taxiing to runway 22L approaching taxiway D on taxiway B about 400 ft west of taxiway M5, an MD80 was stationary on taxiway M5 facing north. We were taxiing about 20-23 KTS as indicated on the ADI. In a maneuver that surprised and scared me, the MD80 started moving aggressively into the intersection of taxiway M5 and taxiway D, to cut us off. It was clear to me that this aircraft had to see us. I applied heavy brake pressure to avoid a collision with MD80. Later, the flight attendants remarked about the deceleration and asked what had happened. I brought this to the attention of the tower and later contacted them via telephone. I was told by a tower supervisor that it was the tower's fault and that they would take corrective action. However, I feel that MD80 was acting aggressively and dangerously by going from a complete stop to an acceleration to cut in front of us. To me, it falls into the category of 'if someone tells you to jump off a cliff, will you?' in fact, I don't think the tower told MD80 to cut in front of us -- I don't think they told them anything and MD80 just decided to play the 'cutoff aircraft X game.' apparently, this is a common problem at ord, as I hear from anecdotal stories. Someone should take corrective action with the air carrier Y pilots before a disaster occurs.

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Original NASA ASRS Text

Title: B767 FLC FORCED TO AGGRESSIVELY BRAKE TO AVOID COLLISION WITH ANOTHER ACFT WHILE TAXIING.

Narrative: TAXIING TO RWY 22L APCHING TXWY D ON TXWY B ABOUT 400 FT W OF TXWY M5, AN MD80 WAS STATIONARY ON TXWY M5 FACING N. WE WERE TAXIING ABOUT 20-23 KTS AS INDICATED ON THE ADI. IN A MANEUVER THAT SURPRISED AND SCARED ME, THE MD80 STARTED MOVING AGGRESSIVELY INTO THE INTXN OF TXWY M5 AND TXWY D, TO CUT US OFF. IT WAS CLR TO ME THAT THIS ACFT HAD TO SEE US. I APPLIED HVY BRAKE PRESSURE TO AVOID A COLLISION WITH MD80. LATER, THE FLT ATTENDANTS REMARKED ABOUT THE DECELERATION AND ASKED WHAT HAD HAPPENED. I BROUGHT THIS TO THE ATTN OF THE TWR AND LATER CONTACTED THEM VIA TELEPHONE. I WAS TOLD BY A TWR SUPVR THAT IT WAS THE TWR'S FAULT AND THAT THEY WOULD TAKE CORRECTIVE ACTION. HOWEVER, I FEEL THAT MD80 WAS ACTING AGGRESSIVELY AND DANGEROUSLY BY GOING FROM A COMPLETE STOP TO AN ACCELERATION TO CUT IN FRONT OF US. TO ME, IT FALLS INTO THE CATEGORY OF 'IF SOMEONE TELLS YOU TO JUMP OFF A CLIFF, WILL YOU?' IN FACT, I DON'T THINK THE TWR TOLD MD80 TO CUT IN FRONT OF US -- I DON'T THINK THEY TOLD THEM ANYTHING AND MD80 JUST DECIDED TO PLAY THE 'CUTOFF ACFT X GAME.' APPARENTLY, THIS IS A COMMON PROB AT ORD, AS I HEAR FROM ANECDOTAL STORIES. SOMEONE SHOULD TAKE CORRECTIVE ACTION WITH THE ACR Y PLTS BEFORE A DISASTER OCCURS.

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.