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A B727-200 in cruise at FL240 declared an emergency and diverted due to loss of 'a' system hydraulic pressure and quantity caused by a broken pressure line in the right main wheel well.
| Attributes | |
| ACN | 389747 |
| Time | |
| Date | 199712 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : tol |
| State Reference | OH |
| Altitude | msl bound lower : 24000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Flight Phase | cruise other other |
| Route In Use | enroute airway : zob |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 8000 flight time type : 2000 |
| ASRS Report | 389747 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other other : unspecified cockpit |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Lost hydraulic system 'a' just prior to descent. All emergency/abnormal procedures were followed. Emergency was declared with center. Landing was uneventful. We were experiencing moderate turbulence which probably knocked a line loose. Callback conversation with reporter revealed the following information: the reporter stated the loss of fluid was caused by an 'a' system pressure line in the right main wheel well that broke at a previous repair. The reporter said a coupling was installed to repair the line and line clamps installed to isolate the line from vibration.
Original NASA ASRS Text
Title: A B727-200 IN CRUISE AT FL240 DECLARED AN EMER AND DIVERTED DUE TO LOSS OF 'A' SYS HYD PRESSURE AND QUANTITY CAUSED BY A BROKEN PRESSURE LINE IN THE R MAIN WHEEL WELL.
Narrative: LOST HYD SYS 'A' JUST PRIOR TO DSCNT. ALL EMER/ABNORMAL PROCS WERE FOLLOWED. EMER WAS DECLARED WITH CTR. LNDG WAS UNEVENTFUL. WE WERE EXPERIENCING MODERATE TURB WHICH PROBABLY KNOCKED A LINE LOOSE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE LOSS OF FLUID WAS CAUSED BY AN 'A' SYS PRESSURE LINE IN THE R MAIN WHEEL WELL THAT BROKE AT A PREVIOUS REPAIR. THE RPTR SAID A COUPLING WAS INSTALLED TO REPAIR THE LINE AND LINE CLAMPS INSTALLED TO ISOLATE THE LINE FROM VIBRATION.
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.