An airbus 320 after pushback from the gate and immediately after the towbar was disconnected the aircraft moved forward damaging the left nose gear tire.

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Attributes
ACN	529542
Time
Date	200111
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : pushback ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 25000 flight time type : 893
ASRS Report	529542
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 120 flight time total : 6500 flight time type : 680
ASRS Report	529183
Events
Anomaly	aircraft equipment problem : critical ground encounters other non adherence : published procedure non adherence : company policies
Independent Detector	other flight crewa other flight crewb other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Environmental Factor Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Struck tow bar with left nose tire. Normal pushback from gate xx to the 'south spot.' set parking brake on command from the mechanic. With brake set, first officer contacted ZZZ 'metering' on VHF-1, 120.35, and 'metering' told him to contact ZZZ ground control. Captain helped monitor 'metering' and heard ground control give taxi clearance. With no communication from the mechanic, upon hearing taxi clearance, captain released the parking brake and the nose tire impacted the tow bar. Taxied aircraft back to the gate with maintenance concurrence and left nose tire was replaced. 1 hour 25 min delay.

Original NASA ASRS Text

Title: AN AIRBUS 320 AFTER PUSHBACK FROM THE GATE AND IMMEDIATELY AFTER THE TOWBAR WAS DISCONNECTED THE ACFT MOVED FORWARD DAMAGING THE L NOSE GEAR TIRE.

Narrative: STRUCK TOW BAR WITH L NOSE TIRE. NORMAL PUSHBACK FROM GATE XX TO THE 'S SPOT.' SET PARKING BRAKE ON COMMAND FROM THE MECH. WITH BRAKE SET, FO CONTACTED ZZZ 'METERING' ON VHF-1, 120.35, AND 'METERING' TOLD HIM TO CONTACT ZZZ GND CTL. CAPT HELPED MONITOR 'METERING' AND HEARD GND CTL GIVE TAXI CLRNC. WITH NO COM FROM THE MECH, UPON HEARING TAXI CLRNC, CAPT RELEASED THE PARKING BRAKE AND THE NOSE TIRE IMPACTED THE TOW BAR. TAXIED ACFT BACK TO THE GATE WITH MAINT CONCURRENCE AND L NOSE TIRE WAS REPLACED. 1 HR 25 MIN DELAY.

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.