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An A319 flight crew performed the displayed ECAM procedure for a 'F/control elac 1 fault' ECAM message which appeared following an apparent aerodynamic 'bump' induced by the flight controls. They later discovered the first step of that procedure should not have been performed following an 'uncommanded maneuver'.
| Attributes | |
| ACN | 882680 |
| Time | |
| Date | 201004 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZKC.ARTCC |
| State Reference | KS |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FCC (Flight Control Computer) |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 210 Flight Crew Total 10000 Flight Crew Type 800 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 15000 Flight Crew Type 8500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
Noticeable bump occurred at cruise in still air followed immediately by F/control elac [flight/control elevator aileron computer] 1 fault ECAM. The ECAM checklist; when followed; prompts crew to turn affected elac 1 switch off then on. However; after the ECAM checklist was completed we referenced flight manual. A caution before first step (which is to turn affected elac switch off then on) is as follows: 'caution: do not reset elac if uncommanded maneuvers occurred during flight'. This caution is not included in the steps of the ECAM procedure. So while the flight manual cautions us not to reset the elac switch after an uncommanded maneuver (the flight control bump in our case); the ECAM has no such caution.
Original NASA ASRS Text
Title: An A319 flight crew performed the displayed ECAM procedure for a 'F/CTL ELAC 1 FAULT' ECAM message which appeared following an apparent aerodynamic 'bump' induced by the flight controls. They later discovered the first step of that procedure should not have been performed following an 'uncommanded maneuver'.
Narrative: Noticeable bump occurred at cruise in still air followed immediately by F/CTL ELAC [Flight/Control Elevator Aileron Computer] 1 FAULT ECAM. The ECAM Checklist; when followed; prompts crew to turn affected ELAC 1 switch OFF then ON. However; after the ECAM Checklist was completed we referenced flight manual. A caution before first step (which is to turn affected ELAC switch OFF then ON) is as follows: 'CAUTION: Do not reset ELAC if uncommanded maneuvers occurred during flight'. This caution is not included in the steps of the ECAM procedure. So while the flight manual cautions us not to reset the ELAC switch after an uncommanded maneuver (the flight control bump in our case); the ECAM has no such caution.
Data retrieved from NASA's ASRS site as of April 2012 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.