B737-300 lost system a hydraulic fluid shortly after takeoff. Flight crew followed procedures; and returned to departure airport; manually extending landing gear for landing.

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Attributes
ACN	743011
Time
Date	200706
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 5000
Environment
Weather Elements	Rain
Light	Night
Aircraft 1
Controlling Facilities	artcc : zzz.artcc tracon : cyyc.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 180 flight time total : 10000 flight time type : 6000
ASRS Report	743011
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer oversight : pic
Experience	flight time last 90 days : 70 flight time total : 20000 flight time type : 5600
ASRS Report	742520
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : master caution other flight crewa other flight crewb
Resolutory Action	flight crew : landed as precaution other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Flight was all normal until 5 mins after takeoff. Master caution came on. Low pressure light on overhead for #1 system a hydraulic pump. A short time later the low pressure light for the other system a hydraulic pump came on. System a hydraulic quantity gauge indicated empty. We leveled the aircraft at 10000 ft and engaged the autoplt. PNF accomplished the hydraulic system a quantity or pressure loss irregular procedure; notified dispatch; requested return to ZZZ from ATC; manually extended gear; cleared runway; stopped on taxiway a; towed into gate by ground crew.

Original NASA ASRS Text

Title: B737-300 LOST SYSTEM A HYD FLUID SHORTLY AFTER TKOF. FLT CREW FOLLOWED PROCEDURES; AND RETURNED TO DEP ARPT; MANUALLY EXTENDING LNDG GEAR FOR LNDG.

Narrative: FLT WAS ALL NORMAL UNTIL 5 MINS AFTER TKOF. MASTER CAUTION CAME ON. LOW PRESSURE LIGHT ON OVERHEAD FOR #1 SYS A HYD PUMP. A SHORT TIME LATER THE LOW PRESSURE LIGHT FOR THE OTHER SYS A HYD PUMP CAME ON. SYS A HYD QUANTITY GAUGE INDICATED EMPTY. WE LEVELED THE ACFT AT 10000 FT AND ENGAGED THE AUTOPLT. PNF ACCOMPLISHED THE HYD SYS A QUANTITY OR PRESSURE LOSS IRREGULAR PROC; NOTIFIED DISPATCH; REQUESTED RETURN TO ZZZ FROM ATC; MANUALLY EXTENDED GEAR; CLRED RWY; STOPPED ON TXWY A; TOWED INTO GATE BY GND CREW.

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.