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A ramp avionics technician reports about the events that contributed to an A320 being flown on three revenue flights with the passenger service units (psu) oxygen mask panels partially opened in the maintenance test position; preventing full deployment and use of the oxygen masks in a cabin emergency situation.
| Attributes | |
| ACN | 882459 |
| Time | |
| Date | 201004 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Cabin Entertainment |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Avionics Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown |
Narrative:
In reference to a A320 aircraft. I installed the video control unit (vsdu) per maintenance manual (MM) 23-36-97-401. The unit had previously been replaced twice during the visit. I performed the operational test of the passenger entertainment (video) per MM 23-36-00-710. I did not pull the oxygen 02 circuit breakers (circuit breaker)'s or 'arm' any O2 mask container since I did not believe this to be applicable to the task. In addition; I did not see any mention in maintenance computer records that documented that the O2 masks had been previously 'armed.' this aircraft visit was using the hangar paper package and maintenance computer for documenting write-ups. This caused confusion between the maintenance ramp crew and the hangar crew. This method of mixing methods has caused confusion in the past and is a ongoing problem.
Original NASA ASRS Text
Title: A Ramp Avionics Technician reports about the events that contributed to an A320 being flown on three revenue flights with the Passenger Service Units (PSU) Oxygen mask panels partially opened in the maintenance test position; preventing full deployment and use of the oxygen masks in a cabin emergency situation.
Narrative: In reference to a A320 aircraft. I installed the Video Control Unit (VSDU) per Maintenance Manual (MM) 23-36-97-401. The unit had previously been replaced twice during the visit. I performed the Operational Test of the Passenger Entertainment (Video) per MM 23-36-00-710. I did not pull the Oxygen 02 Circuit Breakers (CB)'s or 'Arm' any O2 mask container since I did not believe this to be applicable to the Task. In addition; I did not see any mention in Maintenance computer records that documented that the O2 masks had been previously 'Armed.' This aircraft visit was using the hangar paper package and maintenance computer for documenting write-ups. This caused confusion between the Maintenance Ramp Crew and the Hangar Crew. This method of mixing methods has caused confusion in the past and is a ongoing problem.
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.