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An A320 crew reported that their aircraft had wing anti-ice valve MEL'ed inoperative and required to be secured in the open position. The crew determined later that the valve was not in the open position but they identified an incorrect valve as open on the system screen.
| Attributes | |
| ACN | 920373 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Aerofoil Ice System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 250 Flight Crew Total 18000 Flight Crew Type 8100 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 180 Flight Crew Total 9000 Flight Crew Type 1200 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural MEL |
Narrative:
We were dispatched with a wing anti-ice valve inoperative. Part of the MEL required the crew to verify that the wing anti-ice valve was visible on the system screen prior to takeoff. We performed the check and verification. I now find out that the valve was not secured open; which means we must have confused the valve indications on our verification. Perhaps this check should be made by maintenance prior to each departure.
Original NASA ASRS Text
Title: An A320 crew reported that their aircraft had wing anti-ice valve MEL'ed inoperative and required to be secured in the open position. The crew determined later that the valve was not in the open position but they identified an incorrect valve as open on the system screen.
Narrative: We were dispatched with a wing anti-ice valve inoperative. Part of the MEL required the crew to verify that the wing anti-ice valve was visible on the system screen prior to takeoff. We performed the check and verification. I now find out that the valve was not secured open; which means we must have confused the valve indications on our verification. Perhaps this check should be made by Maintenance prior to each departure.
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.