A320 parking brakes fail to set following pushback. Return to gate for maintenance.

Attributes
ACN	700988
Time
Date	200606
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : pushback
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 80 flight time total : 9500 flight time type : 1600
ASRS Report	700988
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During pushback. Ground crew pushed us back to position. #1 engine was started and captain set parking brake. I saw ground person indicating set brakes because aircraft was rolling. I applied brakes and aircraft did not stop. Captain cycled parking brake and then turned on anti-skid/nosewheel steering switch which stopped aircraft. There were no injuries to flight attendants/ground personnel. Brake system operated normally and we returned to the gate.

Original NASA ASRS Text

Title: A320 PARKING BRAKES FAIL TO SET FOLLOWING PUSHBACK. RETURN TO GATE FOR MAINT.

Narrative: DURING PUSHBACK. GND CREW PUSHED US BACK TO POS. #1 ENG WAS STARTED AND CAPT SET PARKING BRAKE. I SAW GND PERSON INDICATING SET BRAKES BECAUSE ACFT WAS ROLLING. I APPLIED BRAKES AND ACFT DID NOT STOP. CAPT CYCLED PARKING BRAKE AND THEN TURNED ON ANTI-SKID/NOSEWHEEL STEERING SWITCH WHICH STOPPED ACFT. THERE WERE NO INJURIES TO FLT ATTENDANTS/GND PERSONNEL. BRAKE SYS OPERATED NORMALLY AND WE RETURNED TO THE GATE.

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.