A B737 rejected a takeoff with 'a' hydraulic fluid decreasing below 1 gal during takeoff at a low speed. This is a repeat leak for this aircraft. An emergency was declared.

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Attributes
ACN	774520
Time
Date	200802
Local Time Of Day	1201 To 1800
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	B737-200
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	774520
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	other
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Taking off runway 8R; I noticed system 'a' hydraulic fluid dropping below 1 gallon. I decided to abort takeoff. We were under 80 KTS. No emergency was declared. We returned to ramp. Mechanics told me hydraulic leak was coming from close to the same place as I had experienced with same aircraft a few days prior.

Original NASA ASRS Text

Title: A B737 REJECTED A TKOF WITH 'A' HYDRAULIC FLUID DECREASING BELOW 1 GAL DURING TKOF AT A LOW SPD. THIS IS A REPEAT LEAK FOR THIS ACFT. AN EMER WAS DECLARED.

Narrative: TAKING OFF RWY 8R; I NOTICED SYS 'A' HYD FLUID DROPPING BELOW 1 GALLON. I DECIDED TO ABORT TKOF. WE WERE UNDER 80 KTS. NO EMER WAS DECLARED. WE RETURNED TO RAMP. MECHS TOLD ME HYD LEAK WAS COMING FROM CLOSE TO THE SAME PLACE AS I HAD EXPERIENCED WITH SAME ACFT A FEW DAYS PRIOR.

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.