Narrative:

After pushing straight back from the gate at tus; the first officer called for taxi clearance. Ground instructed us; 'taxi to runway 29R;' after clearing right and left; I made a right turn on the ramp. I began to taxi at a slow rate across the ramp to intercept taxiway a via A10. The first officer called 'clear right.' several seconds later; prior to reaching taxiway a; I saw a piper warrior taxiing at an unusually high rate of speed sebound on taxiway a. I immediately applied brakes firmly and stopped the aircraft. The first officer asked the ground controller; 'were we supposed to follow that piper?' the ground controller's response was; 'oh; that was my mistake.' I called on the interphone to check on the flight attendants. The flight attendants responded that they were ok. The first officer cleared his side of the aircraft properly; however; the high rate of speed of the piper; and the lack of instruction by the ground controller; both contributed to this incident. With safety as my main concern; had I not applied brakes firmly; we may have impacted the piper. Always be aware that even if others are not operating with safety as the main priority; this does not relieve us of our responsibility.

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Original NASA ASRS Text

Title: ACR DEP FROM TUS EXPERIENCED GND CONFLICT WHEN GND CTLR FAILED TO ADVISE FLT CREW OF CONFLICTING TFC REQUIRING REPORTER TO INITIATE FIRM STOP.

Narrative: AFTER PUSHING STRAIGHT BACK FROM THE GATE AT TUS; THE FO CALLED FOR TAXI CLRNC. GND INSTRUCTED US; 'TAXI TO RWY 29R;' AFTER CLRING R AND L; I MADE A R TURN ON THE RAMP. I BEGAN TO TAXI AT A SLOW RATE ACROSS THE RAMP TO INTERCEPT TXWY A VIA A10. THE FO CALLED 'CLR R.' SEVERAL SECONDS LATER; PRIOR TO REACHING TXWY A; I SAW A PIPER WARRIOR TAXIING AT AN UNUSUALLY HIGH RATE OF SPD SEBOUND ON TXWY A. I IMMEDIATELY APPLIED BRAKES FIRMLY AND STOPPED THE ACFT. THE FO ASKED THE GND CTLR; 'WERE WE SUPPOSED TO FOLLOW THAT PIPER?' THE GND CTLR'S RESPONSE WAS; 'OH; THAT WAS MY MISTAKE.' I CALLED ON THE INTERPHONE TO CHK ON THE FLT ATTENDANTS. THE FLT ATTENDANTS RESPONDED THAT THEY WERE OK. THE FO CLRED HIS SIDE OF THE ACFT PROPERLY; HOWEVER; THE HIGH RATE OF SPD OF THE PIPER; AND THE LACK OF INSTRUCTION BY THE GND CTLR; BOTH CONTRIBUTED TO THIS INCIDENT. WITH SAFETY AS MY MAIN CONCERN; HAD I NOT APPLIED BRAKES FIRMLY; WE MAY HAVE IMPACTED THE PIPER. ALWAYS BE AWARE THAT EVEN IF OTHERS ARE NOT OPERATING WITH SAFETY AS THE MAIN PRIORITY; THIS DOES NOT RELIEVE US OF OUR RESPONSIBILITY.

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.