Narrative:

During the flight from bellingham, wa, it was noted that there was an increased loss of hydraulic fluid. There had been a previous note of a small hydraulic leak and after consulting with maintenance, the advice was to try to determine where the leak was occurring. Upon arrival in vancouver, canada, the right gear well was checked and 2 fittings were found to be loose. After tightening the fittings, the system was svced with fluid and released. Operation of all system were normal, but a slight loss of fluid was noted on the leg to bellingham, wa. During the flight to sacramento, the fluid loss became more evident. Upon arrival at sacramento, the fluid level was above the emergency level. As the hydraulic low level light came on, the auxiliary hydraulic pump was selected 'on,' and was noted to cavitate to indicate air in the system. Every effort was focused on getting on the ground as quickly and safely as possible. With the limited fluid above the red line, all system would be normal. During the descent, speed brakes were not an option, as that would cost valuable fluid, and as a result, it was noted that the indicated airspeed was in excess of 250 KIAS, but this action was not intentional. The copilot reported 280 KTS, however, 265 KTS was observed and was corrected immediately. By descending without added hydraulic fluid loss, the end result was all needed functions worked and no emergency occurred. The auxiliary hydraulic pump continued to cavitate on rollout, therefore, speed brakes, thrust reverser, normal gear operations, and normal braking would not have been available. Failure to have absolute control of speed was a problem, however, control of the situation was critical.

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Original NASA ASRS Text

Title: C650 CREW FLEW A NUMBER OF LEGS WITH A HYD LEAK THAT WAS NOT REPAIRED. THE CREW FLEW OVER 250 KTS BELOW 10000 FT, BECAUSE THEY WERE UNABLE TO DEPLOY THE SPD BRAKES.

Narrative: DURING THE FLT FROM BELLINGHAM, WA, IT WAS NOTED THAT THERE WAS AN INCREASED LOSS OF HYD FLUID. THERE HAD BEEN A PREVIOUS NOTE OF A SMALL HYD LEAK AND AFTER CONSULTING WITH MAINT, THE ADVICE WAS TO TRY TO DETERMINE WHERE THE LEAK WAS OCCURRING. UPON ARR IN VANCOUVER, CANADA, THE R GEAR WELL WAS CHKED AND 2 FITTINGS WERE FOUND TO BE LOOSE. AFTER TIGHTENING THE FITTINGS, THE SYS WAS SVCED WITH FLUID AND RELEASED. OP OF ALL SYS WERE NORMAL, BUT A SLIGHT LOSS OF FLUID WAS NOTED ON THE LEG TO BELLINGHAM, WA. DURING THE FLT TO SACRAMENTO, THE FLUID LOSS BECAME MORE EVIDENT. UPON ARR AT SACRAMENTO, THE FLUID LEVEL WAS ABOVE THE EMER LEVEL. AS THE HYD LOW LEVEL LIGHT CAME ON, THE AUX HYD PUMP WAS SELECTED 'ON,' AND WAS NOTED TO CAVITATE TO INDICATE AIR IN THE SYS. EVERY EFFORT WAS FOCUSED ON GETTING ON THE GND AS QUICKLY AND SAFELY AS POSSIBLE. WITH THE LIMITED FLUID ABOVE THE RED LINE, ALL SYS WOULD BE NORMAL. DURING THE DSCNT, SPD BRAKES WERE NOT AN OPTION, AS THAT WOULD COST VALUABLE FLUID, AND AS A RESULT, IT WAS NOTED THAT THE INDICATED AIRSPD WAS IN EXCESS OF 250 KIAS, BUT THIS ACTION WAS NOT INTENTIONAL. THE COPLT RPTED 280 KTS, HOWEVER, 265 KTS WAS OBSERVED AND WAS CORRECTED IMMEDIATELY. BY DSNDING WITHOUT ADDED HYD FLUID LOSS, THE END RESULT WAS ALL NEEDED FUNCTIONS WORKED AND NO EMER OCCURRED. THE AUX HYD PUMP CONTINUED TO CAVITATE ON ROLLOUT, THEREFORE, SPD BRAKES, THRUST REVERSER, NORMAL GEAR OPS, AND NORMAL BRAKING WOULD NOT HAVE BEEN AVAILABLE. FAILURE TO HAVE ABSOLUTE CTL OF SPD WAS A PROB, HOWEVER, CTL OF THE SIT WAS CRITICAL.

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.