An A319 flight crew had a conflict with another A319 during taxi.

Attributes
ACN	718445
Time
Date	200611
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 240 flight time total : 10000 flight time type : 1500
ASRS Report	718445
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : ground less severe
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Taxi out; just pushed back bn taxi line. Aircraft line up there (and taxiway cs) for deice. We did not need to deice. Ramp control cleared us to cs taxi line to get out of deice lineup. Ramp asked if we had enough room to taxi from bn to cs. There was a company B757 in front of us and an A319 abeam and slightly in front of us on cs. When asked; we had plenty of clearance either side to safely taxi from bn to cs. I estimate 40-50 ft clearance on the right side and captain estimates at least 30 ft on the left side. We turned approximately 40 degrees to the left to transition to cs. We had plenty clearance when he started to move forward. We were just ahead of him at the time. He taxied 10-20 ft forward then stopped. When I noticed him moving; I told the captain. We were going slow and elected not to stop as the ramp was icy. At the time we still had clearance. By the time I stated that he was taxiing forward; he had started to stop. We had clearance from ramp tower to transition from bn to cs and clearance on either side of the 2 airplanes. We assumed the 2 ramp towers were talking to each other. In this case a bad assumption. But I feel in no way was safety ever compromised.

Original NASA ASRS Text

Title: AN A319 FLT CREW HAD A CONFLICT WITH ANOTHER A319 DURING TAXI.

Narrative: TAXI OUT; JUST PUSHED BACK BN TAXI LINE. ACFT LINE UP THERE (AND TXWY CS) FOR DEICE. WE DID NOT NEED TO DEICE. RAMP CTL CLRED US TO CS TAXI LINE TO GET OUT OF DEICE LINEUP. RAMP ASKED IF WE HAD ENOUGH ROOM TO TAXI FROM BN TO CS. THERE WAS A COMPANY B757 IN FRONT OF US AND AN A319 ABEAM AND SLIGHTLY IN FRONT OF US ON CS. WHEN ASKED; WE HAD PLENTY OF CLRNC EITHER SIDE TO SAFELY TAXI FROM BN TO CS. I ESTIMATE 40-50 FT CLRNC ON THE R SIDE AND CAPT ESTIMATES AT LEAST 30 FT ON THE L SIDE. WE TURNED APPROX 40 DEGS TO THE L TO TRANSITION TO CS. WE HAD PLENTY CLRNC WHEN HE STARTED TO MOVE FORWARD. WE WERE JUST AHEAD OF HIM AT THE TIME. HE TAXIED 10-20 FT FORWARD THEN STOPPED. WHEN I NOTICED HIM MOVING; I TOLD THE CAPT. WE WERE GOING SLOW AND ELECTED NOT TO STOP AS THE RAMP WAS ICY. AT THE TIME WE STILL HAD CLRNC. BY THE TIME I STATED THAT HE WAS TAXIING FORWARD; HE HAD STARTED TO STOP. WE HAD CLRNC FROM RAMP TWR TO TRANSITION FROM BN TO CS AND CLRNC ON EITHER SIDE OF THE 2 AIRPLANES. WE ASSUMED THE 2 RAMP TWRS WERE TALKING TO EACH OTHER. IN THIS CASE A BAD ASSUMPTION. BUT I FEEL IN NO WAY WAS SAFETY EVER COMPROMISED.

Data retrieved from NASA's ASRS site as of January 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.