An A-320 lost its brake accumulator pressure during pushback.

Attributes
ACN	266602
Time
Date	199403
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jfk
State Reference	NY
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 35 flight time total : 8000 flight time type : 35
ASRS Report	266602
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During push back, we lost accumulator pressure on the a- 320. Our company procedure calls for brake pressure to be provided by accumulator pressure only. This may be an unsafe procedure based on my experience.

Original NASA ASRS Text

Title: AN A-320 LOST ITS BRAKE ACCUMULATOR PRESSURE DURING PUSHBACK.

Narrative: DURING PUSH BACK, WE LOST ACCUMULATOR PRESSURE ON THE A- 320. OUR COMPANY PROC CALLS FOR BRAKE PRESSURE TO BE PROVIDED BY ACCUMULATOR PRESSURE ONLY. THIS MAY BE AN UNSAFE PROC BASED ON MY EXPERIENCE.

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.