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An airbus 320 on approach at 6000 ft had an unrecoverable #1 engine rollback and was shut down. Caused by an intermediate pressure valve malfunction.
| Attributes | |
| ACN | 612426 |
| Time | |
| Date | 200403 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | approach : traffic pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 5000 |
| ASRS Report | 612426 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 12800 flight time type : 800 |
| ASRS Report | 612427 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : ecam #1 eng fail other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : diverted to another airport |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Ip (intermediate pressure) valve malfunction caused unrecoverable rollback/failure of left engine. Engine shutdown per ECAM direction. Single engine uneventful landing accomplished. Callback conversation with reporter revealed the following information: the reporter stated the cause of the unrecoverable rollback was the failure of the intermediate pressure valve. The reporter said the engine was shut down per the ECAM directions. The reporter stated the manufacturer is making modifications to this valve to eliminate the rollback problems.
Original NASA ASRS Text
Title: AN AIRBUS 320 ON APCH AT 6000 FT HAD AN UNRECOVERABLE #1 ENG ROLLBACK AND WAS SHUT DOWN. CAUSED BY AN INTERMEDIATE PRESSURE VALVE MALFUNCTION.
Narrative: IP (INTERMEDIATE PRESSURE) VALVE MALFUNCTION CAUSED UNRECOVERABLE ROLLBACK/FAILURE OF L ENG. ENG SHUTDOWN PER ECAM DIRECTION. SINGLE ENG UNEVENTFUL LNDG ACCOMPLISHED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE UNRECOVERABLE ROLLBACK WAS THE FAILURE OF THE INTERMEDIATE PRESSURE VALVE. THE RPTR SAID THE ENG WAS SHUT DOWN PER THE ECAM DIRECTIONS. THE RPTR STATED THE MANUFACTURER IS MAKING MODIFICATIONS TO THIS VALVE TO ELIMINATE THE ROLLBACK PROBS.
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.