Narrative:

During gear retraction on takeoff, gear would not retract and hydraulic pump ran continuously. Noticed loss of pressure and fluid in reservoirs and accumulators. Cycled gear to down position and turned hydraulic pump off. Proceeded with hydraulic fluid loss and hydraulic main pressure low checklists as well as all normal checklists. Informed approach control and company about our problem. We declared an emergency and requested crash, fire and rescue vehicles and prepared to return to shreveport for landing. Requested to fly by the tower to confirm the gear was down. First pass was unsuccessful so we returned for another fly by. This time tower personnel and a captain said all gear appeared to be down. The whole time this was occurring we had 3 green cockpit gear indications. We informed the flight attendant and passenger about our problem and had the flight attendant prepare the cabin for a possible emergency upon landing. Before landing, the first officer went back into the cabin to try to visually check the main gear as best he could. When the first officer returned he stated the mains were down but, of course, couldn't confirm that they were locked. We were given clearance to land on runway 14. WX was VFR with good visibility at the time the whole incident took place. Following an uneventful and normal landing, min braking and normal reverse was used. We taxied off the runway using differential power and min braking due to hydraulic fluid loss which made nosewheel steering difficult. We taxied slowly to the terminal where passenger were deplaned without incident and booked on another flight to memphis, tn, our original destination. On walk around in shv before flight, everything about the aircraft appeared normal. Mechanics said the hydraulic line severed when the pump engaged during the gear retraction and kicked all hydraulic fluid overboard.

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Original NASA ASRS Text

Title: COMMUTER LTT COULD NOT RETRACT GEAR BECAUSE OF HYD FLUID AND HYD PRESSURE LOSS AFTER TKOF FROM SHV. RETURN LAND.

Narrative: DURING GEAR RETRACTION ON TKOF, GEAR WOULD NOT RETRACT AND HYD PUMP RAN CONTINUOUSLY. NOTICED LOSS OF PRESSURE AND FLUID IN RESERVOIRS AND ACCUMULATORS. CYCLED GEAR TO DOWN POS AND TURNED HYD PUMP OFF. PROCEEDED WITH HYD FLUID LOSS AND HYD MAIN PRESSURE LOW CHKLISTS AS WELL AS ALL NORMAL CHKLISTS. INFORMED APCH CTL AND COMPANY ABOUT OUR PROBLEM. WE DECLARED AN EMER AND REQUESTED CRASH, FIRE AND RESCUE VEHICLES AND PREPARED TO RETURN TO SHREVEPORT FOR LNDG. REQUESTED TO FLY BY THE TWR TO CONFIRM THE GEAR WAS DOWN. FIRST PASS WAS UNSUCCESSFUL SO WE RETURNED FOR ANOTHER FLY BY. THIS TIME TWR PERSONNEL AND A CAPT SAID ALL GEAR APPEARED TO BE DOWN. THE WHOLE TIME THIS WAS OCCURRING WE HAD 3 GREEN COCKPIT GEAR INDICATIONS. WE INFORMED THE FLT ATTENDANT AND PAX ABOUT OUR PROBLEM AND HAD THE FLT ATTENDANT PREPARE THE CABIN FOR A POSSIBLE EMER UPON LNDG. BEFORE LNDG, THE FO WENT BACK INTO THE CABIN TO TRY TO VISUALLY CHK THE MAIN GEAR AS BEST HE COULD. WHEN THE FO RETURNED HE STATED THE MAINS WERE DOWN BUT, OF COURSE, COULDN'T CONFIRM THAT THEY WERE LOCKED. WE WERE GIVEN CLRNC TO LAND ON RWY 14. WX WAS VFR WITH GOOD VISIBILITY AT THE TIME THE WHOLE INCIDENT TOOK PLACE. FOLLOWING AN UNEVENTFUL AND NORMAL LNDG, MIN BRAKING AND NORMAL REVERSE WAS USED. WE TAXIED OFF THE RWY USING DIFFERENTIAL PWR AND MIN BRAKING DUE TO HYD FLUID LOSS WHICH MADE NOSEWHEEL STEERING DIFFICULT. WE TAXIED SLOWLY TO THE TERMINAL WHERE PAX WERE DEPLANED WITHOUT INCIDENT AND BOOKED ON ANOTHER FLT TO MEMPHIS, TN, OUR ORIGINAL DEST. ON WALK AROUND IN SHV BEFORE FLT, EVERYTHING ABOUT THE ACFT APPEARED NORMAL. MECHS SAID THE HYD LINE SEVERED WHEN THE PUMP ENGAGED DURING THE GEAR RETRACTION AND KICKED ALL HYD FLUID OVERBOARD.

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.