|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : ewr|
|Altitude||agl bound lower : 0|
agl bound upper : 4000
|Controlling Facilities||tracon : n90|
|Operator||common carrier : air carrier|
|Make Model Name||Medium Large Transport, Low Wing, 2 Turbojet Eng|
|Navigation In Use||Other|
|Flight Phase||descent : approach|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 180|
flight time total : 6700
flight time type : 1600
|Affiliation||government : faa|
|Function||controller : approach|
|Qualification||controller : radar|
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : anomaly accepted|
|Air Traffic Incident||other|
While on extended ILS final, first officer looked down and saw the right hydraulic pressure indicating 1 qt. We immediately depressurized the right hydraulic system, then checked abnormal procedures. We lowered flaps to 15 degrees, with right system depressurized. We then repressurized the right system and lowered the gear normally. We then lowered flaps to 40 degrees. On short final, pressure on the right system began to drop with quantity holding at 1 qt. I told tower we'd like to land and have maintenance meet on the high speed taxiway at the end of the runway. Tower had fire/crash equipment meet us, also. After stopping, we depressurized right hydraulic system and shut down #2 engine. The quantity in the right system came back up to about 2 1/2 qts. We turned the right auxiliary pump on and pressure came up to 3000 psi and gear doors closed. Maintenance pinned the gear and we taxied in.
Original NASA ASRS Text
Title: FLT CREW OF ACR MLG EXPERIENCES HYDRAULIC SYSTEM ANOMALY DURING APCH INTO EWR, AND IS CONCERNED ABOUT THE INTEGRITY OF THE LNDG GEAR.
Narrative: WHILE ON EXTENDED ILS FINAL, F/O LOOKED DOWN AND SAW THE RIGHT HYD PRESSURE INDICATING 1 QT. WE IMMEDIATELY DEPRESSURIZED THE RIGHT HYD SYS, THEN CHKED ABNORMAL PROCS. WE LOWERED FLAPS TO 15 DEGS, WITH RIGHT SYS DEPRESSURIZED. WE THEN REPRESSURIZED THE RIGHT SYS AND LOWERED THE GEAR NORMALLY. WE THEN LOWERED FLAPS TO 40 DEGS. ON SHORT FINAL, PRESSURE ON THE RIGHT SYS BEGAN TO DROP WITH QUANTITY HOLDING AT 1 QT. I TOLD TWR WE'D LIKE TO LAND AND HAVE MAINT MEET ON THE HIGH SPD TXWY AT THE END OF THE RWY. TWR HAD FIRE/CRASH EQUIP MEET US, ALSO. AFTER STOPPING, WE DEPRESSURIZED RIGHT HYD SYS AND SHUT DOWN #2 ENG. THE QUANTITY IN THE RIGHT SYS CAME BACK UP TO ABOUT 2 1/2 QTS. WE TURNED THE RIGHT AUX PUMP ON AND PRESSURE CAME UP TO 3000 PSI AND GEAR DOORS CLOSED. MAINT PINNED THE GEAR AND WE TAXIED IN.
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.