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A B737-900 arrived on gate with crew oxygen indicating zero. Found oxygen level within limits. Suspect installation of connector on bottle pressure transmitter.
| Attributes | |
| ACN | 636385 |
| Time | |
| Date | 200410 |
| Day | Thu |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-900 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 636385 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : oxygen press indicator other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : testing |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
I received aircraft X and was assigned the service check. It has been brought to my attention that the oxygen read zero when it arrived at the gate. When accomplishing service check, I checked oxygen and oxygen level was within limits when I checked it. Suspect improper installation of cannon plug upon prior servicing of oxygen bottle.
Original NASA ASRS Text
Title: A B737-900 ARRIVED ON GATE WITH CREW OXYGEN INDICATING ZERO. FOUND OXYGEN LEVEL WITHIN LIMITS. SUSPECT INSTALLATION OF CONNECTOR ON BOTTLE PRESSURE XMITTER.
Narrative: I RECEIVED ACFT X AND WAS ASSIGNED THE SVC CHK. IT HAS BEEN BROUGHT TO MY ATTN THAT THE OXYGEN READ ZERO WHEN IT ARRIVED AT THE GATE. WHEN ACCOMPLISHING SVC CHK, I CHKED OXYGEN AND OXYGEN LEVEL WAS WITHIN LIMITS WHEN I CHKED IT. SUSPECT IMPROPER INSTALLATION OF CANNON PLUG UPON PRIOR SVCING OF OXYGEN BOTTLE.
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.