A300 first officer discovered hydraulic leak during preflight and maintenance signs of log entry as ...

Narrative:

Immediately after takeoff we lost green system hydraulic fluid followed by the associated ECAM message for rsvr lo level. Earlier in the day during our origination preflight; studying the logbook I noticed that two days before out flight; this aircraft lost green hydraulic system due to the failure of flex line in the right landing gear. Also; during the preflight my first officer noticed a small puddle of hydraulic fluid by the right main gear. Maintenance was called approximately 25 minutes prior to departure and showed up about 15 minutes prior to departure. Maintenance signed off in the logbook my entry in the log involving this puddle. Taxi out was normal. Upon raising the landing gear after takeoff; ECAM indicated rsvr lo level. Looking at the hydraulic quantity gauge; the needle was below the red dot. We notified ATC; leveled at 4000 ft and remained in the local area telling ATC we were going to return. I notified the flight attendants of the problem; that we would be returning to our departure airport. I also made a PA to the passengers. We completed the procedure following by the landing gear gravity extension procedure. We declared an emergency. We landed uneventfully and we were towed to the gate. I would like to thank arff for the prompt response and professional demeanor.

Original NASA ASRS Text

Title: A300 First Officer discovered hydraulic leak during preflight and maintenance signs of log entry as normal for this aircraft. On departure green hydraulic system failed and flight returned to departure airport for an emergency landing.

Narrative: Immediately after takeoff we lost green system hydraulic fluid followed by the associated ECAM message for RSVR Lo Level. Earlier in the day during our origination preflight; studying the logbook I noticed that two days before out flight; this aircraft lost green hydraulic system due to the failure of flex line in the right landing gear. Also; during the preflight my First Officer noticed a small puddle of hydraulic fluid by the right main gear. Maintenance was called approximately 25 minutes prior to departure and showed up about 15 minutes prior to departure. Maintenance signed off in the logbook my entry in the log involving this puddle. Taxi out was normal. Upon raising the landing gear after takeoff; ECAM indicated RSVR Lo Level. Looking at the hydraulic quantity gauge; the needle was below the red dot. We notified ATC; leveled at 4000 FT and remained in the local area telling ATC we were going to return. I notified the flight attendants of the problem; that we would be returning to our departure airport. I also made a PA to the passengers. We completed the procedure following by the landing gear gravity extension procedure. We declared an emergency. We landed uneventfully and we were towed to the gate. I would like to thank ARFF for the prompt response and professional demeanor.

Data retrieved from NASA's ASRS site as of April 2012 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	841349
Time
Date	200906
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Parked
Flight Plan	IFR
Component
Aircraft Component	Hydraulic System Lines Connectors Fittings
Person 1
Function	Pilot Not Flying Captain
Person 2
Function	First Officer Pilot Flying
Events
Anomaly	Aircraft Equipment Problem Critical

A300 first officer discovered hydraulic leak during preflight and maintenance signs of log entry as normal for this aircraft. On departure green hydraulic system failed and flight returned to departure airport for an emergency landing.