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An A320 ECAM displayed a green system low pressure. Leal apparently originated in rudder system causing low pressure.
| Attributes | |
| ACN | 655290 |
| Time | |
| Date | 200504 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 28000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 655290 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 655744 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : ecam |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
While at cruise FL280; master caution illuminated with ECAM message 'hydraulic engine #1 pump low pressure/G system low pressure.' completed ECAM actions; notified company via ACARS; declared emergency with ATC; notified flight attendants; notified passenger of precautionary landing; referenced QRH of operable/inoperable system and approach/landing considerations. Referenced volume 3 non-normals. When gear lowered early on extended final; enough green fluid returned to the green reservoir to return all system to normal. Normal landing and taxi in ensued. Green fluid level low; but in the green band. Postflt inspection revealed hydraulic leak below the rudder. I have subsequently been advised that notifying company via ACARS did not necessarily constitute direct contact with soc. Knowing dx/mx/maintenance controller all situation together; I assumed they shared information. We did receive an ACARS response from the company with an early alert number. I felt confident that all had been notified and all bases were covered.
Original NASA ASRS Text
Title: AN A320 ECAM DISPLAYED A GREEN SYS LOW PRESSURE. LEAL APPARENTLY ORIGINATED IN RUDDER SYS CAUSING LOW PRESSURE.
Narrative: WHILE AT CRUISE FL280; MASTER CAUTION ILLUMINATED WITH ECAM MESSAGE 'HYD ENG #1 PUMP LOW PRESSURE/G SYS LOW PRESSURE.' COMPLETED ECAM ACTIONS; NOTIFIED COMPANY VIA ACARS; DECLARED EMER WITH ATC; NOTIFIED FLT ATTENDANTS; NOTIFIED PAX OF PRECAUTIONARY LNDG; REFED QRH OF OPERABLE/INOPERABLE SYS AND APCH/LNDG CONSIDERATIONS. REFED VOLUME 3 NON-NORMALS. WHEN GEAR LOWERED EARLY ON EXTENDED FINAL; ENOUGH GREEN FLUID RETURNED TO THE GREEN RESERVOIR TO RETURN ALL SYS TO NORMAL. NORMAL LNDG AND TAXI IN ENSUED. GREEN FLUID LEVEL LOW; BUT IN THE GREEN BAND. POSTFLT INSPECTION REVEALED HYD LEAK BELOW THE RUDDER. I HAVE SUBSEQUENTLY BEEN ADVISED THAT NOTIFYING COMPANY VIA ACARS DID NOT NECESSARILY CONSTITUTE DIRECT CONTACT WITH SOC. KNOWING DX/MX/MAINT CTLR ALL SIT TOGETHER; I ASSUMED THEY SHARED INFO. WE DID RECEIVE AN ACARS RESPONSE FROM THE COMPANY WITH AN EARLY ALERT NUMBER. I FELT CONFIDENT THAT ALL HAD BEEN NOTIFIED AND ALL BASES WERE COVERED.
Data retrieved from NASA's ASRS site as of January 2009 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.