B737-500 experiences 'a' system hydraulic leak.

Attributes
ACN	739805
Time
Date	200705
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 35000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	technician : inspection authority
Experience	flight time last 90 days : 201 flight time total : 15000 flight time type : 11000
ASRS Report	739805
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : hyd quant gauge
Resolutory Action	flight crew : overcame equipment problem flight crew : diverted to another airport
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

FL350; 180 NM west ZZZ; XA20. A system hydraulic slow leak resulted in 25% indication. 'A' system low pressure light illuminated. Flight manual checklist followed; divert ZZZ. Manual gear extension. Landing and taxi in normal. ATC; jumpseater and pass-riding pilot provided valuable; timely assistance.

Original NASA ASRS Text

Title: B737-500 EXPERIENCES 'A' SYSTEM HYDRAULIC LEAK.

Narrative: FL350; 180 NM W ZZZ; XA20. A SYS HYD SLOW LEAK RESULTED IN 25% INDICATION. 'A' SYS LOW PRESSURE LIGHT ILLUMINATED. FLT MANUAL CHKLIST FOLLOWED; DIVERT ZZZ. MANUAL GEAR EXTENSION. LNDG AND TAXI IN NORMAL. ATC; JUMPSEATER AND PASS-RIDING PLT PROVIDED VALUABLE; TIMELY ASSISTANCE.

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.