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The maintenance technician did not record an oxygen discrepancy on an AS350. He also did not complete the bottle installation after servicing; which led to a low pressure condition.
| Attributes | |
| ACN | 1062239 |
| Time | |
| Date | 201301 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Eurocopter AS 350/355/EC130 - Astar/Twinstar/Ecureuil |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Oxygen System/General |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
During the normal 30day/100hour hydraulic fluid change; while system was draining; I removed and serviced [the oxygen system] bottle and reinstalled. I then finished the servicing of the hydraulic system. I then signed off the pre-completed logbook page for the hydraulic system service. The pilot did the inspection of the hydraulic system and signed the log page. We then proceeded to move the helicopter out of the hangar. I had forgotten to mention the servicing of the [oxygen bottle] to the pilot and I did not remember to write up a discrepancy for the servicing of the [oxygen]. The next time the helicopter flew the crew had a warning on the ventilator of low pressure. The ventilator and attaching lines were checked; all good. The pilot checked the [oxygen] bottle and found the one feed line not connected.
Original NASA ASRS Text
Title: The Maintenance Technician did not record an oxygen discrepancy on an AS350. He also did not complete the bottle installation after servicing; which led to a low pressure condition.
Narrative: During the normal 30day/100hour hydraulic fluid change; while system was draining; I removed and serviced [the oxygen system] bottle and reinstalled. I then finished the servicing of the hydraulic system. I then signed off the pre-completed logbook page for the hydraulic system service. The pilot did the inspection of the hydraulic system and signed the log page. We then proceeded to move the helicopter out of the hangar. I had forgotten to mention the servicing of the [oxygen bottle] to the pilot and I did not remember to write up a discrepancy for the servicing of the [oxygen]. The next time the helicopter flew the crew had a warning on the ventilator of low pressure. The ventilator and attaching lines were checked; all good. The pilot checked the [oxygen] bottle and found the one feed line not connected.
Data retrieved from NASA's ASRS site as of July 2013 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.