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A B727-200 on final approach at 2500 ft declared an emergency due to a loss of 'a' system pressure and quantity caused by a failed left leading edge slat actuator pressure line.
| Attributes | |
| ACN | 403048 |
| Time | |
| Date | 199805 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 2500 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 8000 flight time type : 5000 |
| ASRS Report | 403048 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 5000 |
| ASRS Report | 402350 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Total 'a' system hydraulic loss on final runway 27R atl. Flaps 15 degree landing flown, abnormal procedures for 'a' system loss followed. Emergency declared and uneventful landing accomplished. After landing, we cleared the runway and were towed to the gate by a tug. Callback conversation with reporter revealed the following information: the reporter stated the 'a' hydraulic system loss was caused by a solid pressure line failure to a leading edge slat actuator. Supplemental information from acn 402350: total a system hydraulic loss on final runway 27R atl. Flaps 15 landing flown, emergency declared, and uneventful landing accomplished. After landing, we cleared the runway and were towed to the gate by a company tug. Callback conversation with reporter revealed the following information: reporter stated this aircraft and crew had diverted to mob earlier in the day with the #2 leading edge flap actuator leaking and causing the loss of 'a' hydraulic pressure and qty. The reporter said the actuator was replaced by a contract mechanic and the aircraft departed to atl. The reporter stated on approach to atl the 'a' system pressure and qty again dropped to zero. The reporter said the same #2 leading edge flap actuator previously replaced at mob failed again.
Original NASA ASRS Text
Title: A B727-200 ON FINAL APCH AT 2500 FT DECLARED AN EMER DUE TO A LOSS OF 'A' SYS PRESSURE AND QUANTITY CAUSED BY A FAILED L LEADING EDGE SLAT ACTUATOR PRESSURE LINE.
Narrative: TOTAL 'A' SYS HYD LOSS ON FINAL RWY 27R ATL. FLAPS 15 DEG LNDG FLOWN, ABNORMAL PROCS FOR 'A' SYS LOSS FOLLOWED. EMER DECLARED AND UNEVENTFUL LNDG ACCOMPLISHED. AFTER LNDG, WE CLRED THE RWY AND WERE TOWED TO THE GATE BY A TUG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE 'A' HYD SYS LOSS WAS CAUSED BY A SOLID PRESSURE LINE FAILURE TO A LEADING EDGE SLAT ACTUATOR. SUPPLEMENTAL INFO FROM ACN 402350: TOTAL A SYS HYD LOSS ON FINAL RWY 27R ATL. FLAPS 15 LNDG FLOWN, EMER DECLARED, AND UNEVENTFUL LNDG ACCOMPLISHED. AFTER LNDG, WE CLRED THE RWY AND WERE TOWED TO THE GATE BY A COMPANY TUG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THIS ACFT AND CREW HAD DIVERTED TO MOB EARLIER IN THE DAY WITH THE #2 LEADING EDGE FLAP ACTUATOR LEAKING AND CAUSING THE LOSS OF 'A' HYD PRESSURE AND QTY. THE RPTR SAID THE ACTUATOR WAS REPLACED BY A CONTRACT MECH AND THE ACFT DEPARTED TO ATL. THE RPTR STATED ON APCH TO ATL THE 'A' SYS PRESSURE AND QTY AGAIN DROPPED TO ZERO. THE RPTR SAID THE SAME #2 LEADING EDGE FLAP ACTUATOR PREVIOUSLY REPLACED AT MOB FAILED AGAIN.
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.