 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
MD11 captain reports the entire oxygen compartment coming out of the side console when use is attempted in cruise. The retaining screws had not been installed after maintenance had replaced the unit.
| Attributes | |
| ACN | 1006999 |
| Time | |
| Date | 201204 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Oxygen System/Crew |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance |
Narrative:
First officer got up to go to the restroom. I tried to don my oxygen mask; but when I tried to remove it the entire compartment that houses the mask came out in one piece; rendering the mask unusable because I could not remove it from the compartment. This occurred just prior to top of descent. Needless to say an event that would have required the use of oxygen would have been a problem. I would have had to use the mask in the observer seat behind me. Prior to departure a review of the maintenance history in the logbook showed that the captain's oxygen compartment was replaced. My preflight inspection of the oxygen system does not include inspection of the compartment. Maintenance did not secure the compartment screws to insure the installation was complete. The compartment was placed in the slot but not screwed in. This can be prevented in the future by maintenance insuring that the compartment is properly secured. Next time I see a history of maintenance on my oxygen compartment I will check that it is screwed in completely.
Original NASA ASRS Text
Title: MD11 Captain reports the entire oxygen compartment coming out of the side console when use is attempted in cruise. The retaining screws had not been installed after Maintenance had replaced the unit.
Narrative: First Officer got up to go to the restroom. I tried to don my oxygen mask; but when I tried to remove it the entire compartment that houses the mask came out in one piece; rendering the mask unusable because I could not remove it from the compartment. This occurred just prior to top of descent. Needless to say an event that would have required the use of oxygen would have been a problem. I would have had to use the mask in the observer seat behind me. Prior to departure a review of the maintenance history in the logbook showed that the Captain's oxygen compartment was replaced. My preflight inspection of the oxygen system does not include inspection of the compartment. Maintenance did not secure the compartment screws to insure the installation was complete. The compartment was placed in the slot but not screwed in. This can be prevented in the future by maintenance insuring that the compartment is properly secured. Next time I see a history of maintenance on my oxygen compartment I will check that it is screwed in completely.
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.