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A321. Rudder hydraulic actuator was required to be replaced a second time because it was not properly installed the first time.
| Attributes | |
| ACN | 523507 |
| Time | |
| Date | 200108 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : inspection authority technician : fcc technician : airframe |
| Experience | maintenance avionics : 5 maintenance lead technician : 10 maintenance technician : 20 |
| ASRS Report | 523507 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : company policies non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : repair performance deficiency : logbook entry performance deficiency : installation performance deficiency : inspection performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company |
| Primary Problem | Company |
Narrative:
On graveyard shift for aug/xa/01, we were assigned aircraft XXX for a rudder trim MEL and CAT MEL. We installed the actuator per task de-dd-back course-air data computer maintenance manual and did the following chkout: 1) electric trim check, 2) hydraulic movement of rudder for leak check, 3) A75 test (FMGC picks up trim fault), 4) land test (CAT IIIA/IIIB). In addition, the outbound crew did their preflight control check and did not mention a fault. When aircraft arrived destination, the actuator had to be changed again due to excessive right trim.
Original NASA ASRS Text
Title: A321. RUDDER HYD ACTUATOR WAS REQUIRED TO BE REPLACED A SECOND TIME BECAUSE IT WAS NOT PROPERLY INSTALLED THE FIRST TIME.
Narrative: ON GRAVEYARD SHIFT FOR AUG/XA/01, WE WERE ASSIGNED ACFT XXX FOR A RUDDER TRIM MEL AND CAT MEL. WE INSTALLED THE ACTUATOR PER TASK DE-DD-BC-ADC MAINT MANUAL AND DID THE FOLLOWING CHKOUT: 1) ELECTRIC TRIM CHK, 2) HYD MOVEMENT OF RUDDER FOR LEAK CHK, 3) A75 TEST (FMGC PICKS UP TRIM FAULT), 4) LAND TEST (CAT IIIA/IIIB). IN ADDITION, THE OUTBOUND CREW DID THEIR PREFLT CTL CHK AND DID NOT MENTION A FAULT. WHEN ACFT ARRIVED DEST, THE ACTUATOR HAD TO BE CHANGED AGAIN DUE TO EXCESSIVE R TRIM.
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.