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B737 first officer reported that the crew oxygen mask was not the right type.
| Attributes | |
| ACN | 1478923 |
| Time | |
| Date | 201709 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Oxygen System/Crew |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 7171 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
This was a normal operation and everything was proceeding well during the preflight. The oxygen mask was preflighted according to section 3 of our flight manual the way I had been taught. Our FM states: 'oxygen panel: check that mask is properly stowed and normal/100% switch is in the 100% position.'years ago my instructor said that meant the doors are properly closed and the red mask handle is readily available to place the mask on your face. There was no need to open the doors. Everything checked out according to the FM specifications. Upon our crew rest break the O2 mask was removed and it was discovered that the mask did not match the same type as the captain's mask. Upon further inspection the O2 mask was not the right type of mask for the O2 mask box that was installed. I knew this was not acceptable because of a previous O2 mask failure experience. When placed in the box the way it was; the mask appeared to be normal until it was removed.the mask appeared to work normally and the discrepancy was reported.
Original NASA ASRS Text
Title: B737 First Officer reported that the crew oxygen mask was not the right type.
Narrative: This was a normal operation and everything was proceeding well during the preflight. The Oxygen mask was preflighted according to section 3 of our Flight Manual the way I had been taught. Our FM states: 'Oxygen Panel: Check that mask is properly stowed and Normal/100% switch is in the 100% position.'Years ago my Instructor said that meant the doors are properly closed and the red mask handle is readily available to place the mask on your face. There was no need to open the doors. Everything checked out according to the FM specifications. Upon our crew rest break the O2 mask was removed and it was discovered that the mask did not match the same type as the Captain's mask. Upon further inspection the O2 mask was not the right type of mask for the O2 mask box that was installed. I knew this was not acceptable because of a previous O2 mask failure experience. When placed in the box the way it was; the mask appeared to be normal until it was removed.The mask appeared to work normally and the discrepancy was reported.
Data retrieved from NASA's ASRS site 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.