A300 flight crew experienced a hydraulic problem on take-off.

Narrative:

The aircraft had been in maintenance all day for a green hydraulic system problem. After it was released by maintenance; it was pre-flighted and received clearance. Taxi out was normal and after takeoff; landing gear was selected up at approximately 100 ft and the chime sounded at about 600-700 ft with an ECAM message indicating low pump pressure on green hydraulic system pumps 1 and 2. The landing gear unlocked and doors opened but gear did not retract. ATC was advised of the problem and based on weather; fuel; runway; etc; a decision to return to land was made; but no emergency was declared yet. ATC provided vectors. 5;000 ft and 185 KTS was maintained with the takeoff flaps left at 15/15; and company flight control was advised of the situation and an artr was issued for a divert back to land.all checklists were run; green hydraulic pumps 1 and 2 were off with the electric pump on; and brakes at alt/on for the landing. An emergency was declared for the landing; and emergency equipment was requested to be standing by. An uneventful approach and landing with flaps 30/40 was made. The aircraft was taxied off the runway to the parking spot on the ramp with flaps left down until ramp arrival/parking brake set so as to keep loads to a minimum on the green system electric pump. It does not appear that any deviations from far or fom procedures occurred; so the event category is listed as flight control/dispatch as no other category appears to be applicable.

Original NASA ASRS Text

Title: A300 flight crew experienced a hydraulic problem on take-off.

Narrative: The aircraft had been in maintenance all day for a green hydraulic system problem. After it was released by Maintenance; it was pre-flighted and received clearance. Taxi out was normal and after takeoff; landing gear was selected up at approximately 100 FT and the chime sounded at about 600-700 FT with an ECAM message indicating low pump pressure on green hydraulic system pumps 1 and 2. The landing gear unlocked and doors opened but gear did not retract. ATC was advised of the problem and based on weather; fuel; runway; etc; a decision to return to land was made; but no emergency was declared yet. ATC provided vectors. 5;000 FT and 185 KTS was maintained with the takeoff flaps left at 15/15; and Company flight control was advised of the situation and an ARTR was issued for a divert back to land.All checklists were run; green hydraulic pumps 1 and 2 were off with the electric pump on; and brakes at alt/on for the landing. An emergency was declared for the landing; and emergency equipment was requested to be standing by. An uneventful approach and landing with flaps 30/40 was made. The aircraft was taxied off the runway to the parking spot on the ramp with flaps left down until ramp arrival/parking brake set so as to keep loads to a minimum on the green system electric pump. It does not appear that any deviations from FAR or FOM procedures occurred; so the event category is listed as flight control/dispatch as no other category appears to be applicable.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1069031
Time
Date	201302
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Tower
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Landing Gear
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 20000 Flight Crew Type 1100
Person 2
Function	Pilot Not Flying
Experience	Flight Crew Last 90 Days 75 Flight Crew Total 6000
Events
Anomaly	Aircraft Equipment Problem Critical