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An EMB145 on descent at 3500 ft experienced a loss of #2 hydraulic system quantity caused by a failed seal in the rudder actuator.
| Attributes | |
| ACN | 416513 |
| Time | |
| Date | 199810 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 3500 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : jfk |
| Operator | common carrier : air carrier |
| Make Model Name | Embraer Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 3200 flight time type : 200 |
| ASRS Report | 416513 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On approach into ewr we had a hydraulic #2 low level message. Our last clearance before the problem was to descend to 4000 ft then maintain 180 KTS. I was the PNF, so I began to run the checklist for the problem as our #2 hydraulic had lost a significant amount of fluid. As I was troubleshooting we were further cleared to 3000 ft. We confirmed the new altitude then I continued with the checklist. The next words from approach were a harsh 'air carrier, are you at 180 KTS?' at about 3500 ft. We had not yet slowed as previously cleared. The PF must avoid becoming overly distraction by an abnormal and stick to flying the airplane. A normal landing was completed but on the ground a leak in the #2 rudder hydraulic valve had relieved us of most of our #2 hydraulic fluid. Callback conversation with reporter revealed the following information: the reporter stated the aircraft did not have a complete loss of #2 system fluid and the system still had pressure. The reporter said the cause of the fluid loss was a failed seal in the rudder actuator.
Original NASA ASRS Text
Title: AN EMB145 ON DSCNT AT 3500 FT EXPERIENCED A LOSS OF #2 HYD SYS QUANTITY CAUSED BY A FAILED SEAL IN THE RUDDER ACTUATOR.
Narrative: ON APCH INTO EWR WE HAD A HYD #2 LOW LEVEL MESSAGE. OUR LAST CLRNC BEFORE THE PROB WAS TO DSND TO 4000 FT THEN MAINTAIN 180 KTS. I WAS THE PNF, SO I BEGAN TO RUN THE CHKLIST FOR THE PROB AS OUR #2 HYD HAD LOST A SIGNIFICANT AMOUNT OF FLUID. AS I WAS TROUBLESHOOTING WE WERE FURTHER CLRED TO 3000 FT. WE CONFIRMED THE NEW ALT THEN I CONTINUED WITH THE CHKLIST. THE NEXT WORDS FROM APCH WERE A HARSH 'ACR, ARE YOU AT 180 KTS?' AT ABOUT 3500 FT. WE HAD NOT YET SLOWED AS PREVIOUSLY CLRED. THE PF MUST AVOID BECOMING OVERLY DISTR BY AN ABNORMAL AND STICK TO FLYING THE AIRPLANE. A NORMAL LNDG WAS COMPLETED BUT ON THE GND A LEAK IN THE #2 RUDDER HYD VALVE HAD RELIEVED US OF MOST OF OUR #2 HYD FLUID. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT DID NOT HAVE A COMPLETE LOSS OF #2 SYS FLUID AND THE SYS STILL HAD PRESSURE. THE RPTR SAID THE CAUSE OF THE FLUID LOSS WAS A FAILED SEAL IN THE RUDDER ACTUATOR.
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.