Narrative:

After being cleared to gate X and at position (see attached charts) my first officer loudly called out 'whoa, whoa, whoa.' glancing at him, I saw the object of his alarm. A converging B737 was taxiing inside my starboard side at a high rate of speed (estimate above 20 KTS). I immediately brought my aircraft to a full stop as the B737's wingtip came dangerously close. The B737, still at unreasonable speed passed in front of me, arced around to the right and swung into his gate. While still parked I queried ground controller as to 'what had just happened.' I could not believe what I had just witnessed. Apparently ground controller unaware, gave me their local phone number. My aircraft was on the yellow taxi line, approximately 200 ft into the ramp when the incident occurred, and had the first officer not seen the danger a collision would have occurred. There is no room nor was there any legitimate reason for the B737 to have been in the area (taxied through vehicle lanes and alongside the B ramp flight line active with ground personnel). I checked with my faic before resuming taxi as my stop had been forceful (all seated, all secure). During deplaning, many (30-40+) upset and irate passenger demanded I 'do something about the other aircraft.' many commenting 'how he almost hit us.' spoke to tower supervisors who advised other aircraft was flight #XXX. The following day during daylight hours, I was able to observe the incident area. That 2 aircraft had been in that ramp sector without colliding has to be credited to the awareness of my first officer, without reservation I can say his alertness prevented a serious incident. It is my considered opinion that the captain of the B737 operated his aircraft in a reckless manner, endangering the passenger and crews of both aircraft.

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Original NASA ASRS Text

Title: B737 TAXIED AT HIGH SPD BTWN RPTR'S B757 AND THE TERMINAL. COLLISION HAD TO BE AVOIDED BY AGGRESSIVE BRAKING.

Narrative: AFTER BEING CLRED TO GATE X AND AT POS (SEE ATTACHED CHARTS) MY FO LOUDLY CALLED OUT 'WHOA, WHOA, WHOA.' GLANCING AT HIM, I SAW THE OBJECT OF HIS ALARM. A CONVERGING B737 WAS TAXIING INSIDE MY STARBOARD SIDE AT A HIGH RATE OF SPD (ESTIMATE ABOVE 20 KTS). I IMMEDIATELY BROUGHT MY ACFT TO A FULL STOP AS THE B737'S WINGTIP CAME DANGEROUSLY CLOSE. THE B737, STILL AT UNREASONABLE SPD PASSED IN FRONT OF ME, ARCED AROUND TO THE R AND SWUNG INTO HIS GATE. WHILE STILL PARKED I QUERIED GND CTLR AS TO 'WHAT HAD JUST HAPPENED.' I COULD NOT BELIEVE WHAT I HAD JUST WITNESSED. APPARENTLY GND CTLR UNAWARE, GAVE ME THEIR LCL PHONE NUMBER. MY ACFT WAS ON THE YELLOW TAXI LINE, APPROX 200 FT INTO THE RAMP WHEN THE INCIDENT OCCURRED, AND HAD THE FO NOT SEEN THE DANGER A COLLISION WOULD HAVE OCCURRED. THERE IS NO ROOM NOR WAS THERE ANY LEGITIMATE REASON FOR THE B737 TO HAVE BEEN IN THE AREA (TAXIED THROUGH VEHICLE LANES AND ALONGSIDE THE B RAMP FLT LINE ACTIVE WITH GND PERSONNEL). I CHKED WITH MY FAIC BEFORE RESUMING TAXI AS MY STOP HAD BEEN FORCEFUL (ALL SEATED, ALL SECURE). DURING DEPLANING, MANY (30-40+) UPSET AND IRATE PAX DEMANDED I 'DO SOMETHING ABOUT THE OTHER ACFT.' MANY COMMENTING 'HOW HE ALMOST HIT US.' SPOKE TO TWR SUPVRS WHO ADVISED OTHER ACFT WAS FLT #XXX. THE FOLLOWING DAY DURING DAYLIGHT HRS, I WAS ABLE TO OBSERVE THE INCIDENT AREA. THAT 2 ACFT HAD BEEN IN THAT RAMP SECTOR WITHOUT COLLIDING HAS TO BE CREDITED TO THE AWARENESS OF MY FO, WITHOUT RESERVATION I CAN SAY HIS ALERTNESS PREVENTED A SERIOUS INCIDENT. IT IS MY CONSIDERED OPINION THAT THE CAPT OF THE B737 OPERATED HIS ACFT IN A RECKLESS MANNER, ENDANGERING THE PAX AND CREWS OF BOTH ACFT.

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.