Narrative:

With positive rate of climb on departure, placed gear handle up and immediately lost hydraulic system 'a.' declared emergency with departure control. Ran appropriate checklists. Coordination with flight attendants, passenger, and company. Returned to mco for a landing on runway 36L, stopping and shutting down on the runway (no nosewheel steering). Communications and problem resolution were as expected based on training. Everything worked as advertised -- except the tug that broke down towing us in! Callback conversation with reporter revealed the following information: the reporter stated the cause of the loss of 'a' system pressure and quantity was the failure of the right main gear uplock actuator. The reporter said the right gear well was saturated with fluid on the return.

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Original NASA ASRS Text

Title: A B737-200 IMMEDIATELY AFTER TKOF AT 150 FT DECLARED AN EMER AND DIVERTED DUE TO LOSS OF 'A' SYS HYDS CAUSED BY THE R MAIN GEAR UPLOCK ACTUATOR FAILURE.

Narrative: WITH POSITIVE RATE OF CLB ON DEP, PLACED GEAR HANDLE UP AND IMMEDIATELY LOST HYD SYS 'A.' DECLARED EMER WITH DEP CTL. RAN APPROPRIATE CHKLISTS. COORD WITH FLT ATTENDANTS, PAX, AND COMPANY. RETURNED TO MCO FOR A LNDG ON RWY 36L, STOPPING AND SHUTTING DOWN ON THE RWY (NO NOSEWHEEL STEERING). COMS AND PROB RESOLUTION WERE AS EXPECTED BASED ON TRAINING. EVERYTHING WORKED AS ADVERTISED -- EXCEPT THE TUG THAT BROKE DOWN TOWING US IN! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE LOSS OF 'A' SYS PRESSURE AND QUANTITY WAS THE FAILURE OF THE R MAIN GEAR UPLOCK ACTUATOR. THE RPTR SAID THE R GEAR WELL WAS SATURATED WITH FLUID ON THE RETURN.

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.