Narrative:

As we were departing savannah on runway 18, our aircraft experienced a main hydraulic failure during gear and flap retraction. The flaps had retracted and the nose gear showed in the up position, but main gear still showed down and locked. This was confirmed by a fly-by of the sav tower who did a visual inspection of the gear. Afterwards, we went into a holding pattern to complete the checklist on our condition. Also during this time, we called one of our maintenance bases for their input. They confirmed our loss of hydraulic fluid and asked if we could fly the plane safely back to one of our bases. The plane was completely flyable without a question of safety of flight. Our only concern was in braking distance. The auxiliary hydraulic system showed maximum psi plus the emergency braking would be available also. We elected to fly to our maintenance base with the longest runway. Upon arrival, we did not declare an emergency, but asked for the emergency equipment as a precautionary measure. The landing was uneventful with the auxiliary braking system with anti-skid working as described. The problem was a gear door actuator that broke and leaked the main hydraulic system in just a few seconds.

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Original NASA ASRS Text

Title: A LEAR 45 ON TKOF EXPERIENCED A MAIN SYS HYD PRESSURE AND QUANTITY LOSS CAUSED BY A FAILED MAIN LNDG GEAR DOOR ACTUATOR.

Narrative: AS WE WERE DEPARTING SAVANNAH ON RWY 18, OUR ACFT EXPERIENCED A MAIN HYD FAILURE DURING GEAR AND FLAP RETRACTION. THE FLAPS HAD RETRACTED AND THE NOSE GEAR SHOWED IN THE UP POS, BUT MAIN GEAR STILL SHOWED DOWN AND LOCKED. THIS WAS CONFIRMED BY A FLY-BY OF THE SAV TWR WHO DID A VISUAL INSPECTION OF THE GEAR. AFTERWARDS, WE WENT INTO A HOLDING PATTERN TO COMPLETE THE CHKLIST ON OUR CONDITION. ALSO DURING THIS TIME, WE CALLED ONE OF OUR MAINT BASES FOR THEIR INPUT. THEY CONFIRMED OUR LOSS OF HYD FLUID AND ASKED IF WE COULD FLY THE PLANE SAFELY BACK TO ONE OF OUR BASES. THE PLANE WAS COMPLETELY FLYABLE WITHOUT A QUESTION OF SAFETY OF FLT. OUR ONLY CONCERN WAS IN BRAKING DISTANCE. THE AUX HYD SYS SHOWED MAX PSI PLUS THE EMER BRAKING WOULD BE AVAILABLE ALSO. WE ELECTED TO FLY TO OUR MAINT BASE WITH THE LONGEST RWY. UPON ARR, WE DID NOT DECLARE AN EMER, BUT ASKED FOR THE EMER EQUIP AS A PRECAUTIONARY MEASURE. THE LNDG WAS UNEVENTFUL WITH THE AUX BRAKING SYS WITH ANTI-SKID WORKING AS DESCRIBED. THE PROB WAS A GEAR DOOR ACTUATOR THAT BROKE AND LEAKED THE MAIN HYD SYS IN JUST A FEW SECONDS.

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.