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B727 experiences loss of a-sys hydraulic fluid because of leak in lower rudder power unit and diverts to elp, tx.
| Attributes | |
| ACN | 467233 |
| Time | |
| Date | 200003 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : ewm.vortac |
| State Reference | TX |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 83 flight time total : 5875 flight time type : 3729 |
| ASRS Report | 467233 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : lowpress light other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
During cruise flight at FL310 with autoplt engaged, noticed flickering of 'elevator low pressure' light followed by illumination of 'system a' hydraulic low pressure lights. First officer continued flying while the captain and so performed the checklist for 'hydraulic leak or loss' and the 'loss of hydraulic system a follow up' checklist. An emergency was declared with ZAB and after discussion with the flight dispatcher and maintenance control, the crew elected to divert into elp. A straight in approach was flown by the captain with alternate extension of the gear and flaps. The aircraft was stopped on the runway and towed to the gate due to the lack of nosewheel steering. Maintenance investigation revealed a hydraulic leak from the lower rudder power unit.
Original NASA ASRS Text
Title: B727 EXPERIENCES LOSS OF A-SYS HYD FLUID BECAUSE OF LEAK IN LOWER RUDDER PWR UNIT AND DIVERTS TO ELP, TX.
Narrative: DURING CRUISE FLT AT FL310 WITH AUTOPLT ENGAGED, NOTICED FLICKERING OF 'ELEVATOR LOW PRESSURE' LIGHT FOLLOWED BY ILLUMINATION OF 'SYS A' HYD LOW PRESSURE LIGHTS. FO CONTINUED FLYING WHILE THE CAPT AND SO PERFORMED THE CHKLIST FOR 'HYD LEAK OR LOSS' AND THE 'LOSS OF HYD SYS A FOLLOW UP' CHKLIST. AN EMER WAS DECLARED WITH ZAB AND AFTER DISCUSSION WITH THE FLT DISPATCHER AND MAINT CTL, THE CREW ELECTED TO DIVERT INTO ELP. A STRAIGHT IN APCH WAS FLOWN BY THE CAPT WITH ALTERNATE EXTENSION OF THE GEAR AND FLAPS. THE ACFT WAS STOPPED ON THE RWY AND TOWED TO THE GATE DUE TO THE LACK OF NOSEWHEEL STEERING. MAINT INVESTIGATION REVEALED A HYD LEAK FROM THE LOWER RUDDER PWR UNIT.
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.