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An MD80 flight crew experienced an oxygen leak from the captain's mask. They descended to a lower altitude and diverted to the nearest suitable airport.
| Attributes | |
| ACN | 811784 |
| Time | |
| Date | 200811 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 21000 flight time type : 7000 |
| ASRS Report | 811784 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
En route from ZZZ1 to ZZZ2; an internal failure of the captain's oxygen regulator was experienced. Because of the failure; oxygen was discovered leaking from the captain's oxygen mask and a loss of oxygen from the cockpit oxygen bottle resulted. A descent to a lower altitude was initiated and a divert into ZZZ was completed after consulting with dispatch and company maintenance services.
Original NASA ASRS Text
Title: AN MD80 FLIGHT CREW EXPERIENCED AN OXYGEN LEAK FROM THE CAPTAIN'S MASK. THEY DESCENDED TO A LOWER ALTITUDE AND DIVERTED TO THE NEAREST SUITABLE AIRPORT.
Narrative: ENRTE FROM ZZZ1 TO ZZZ2; AN INTERNAL FAILURE OF THE CAPT'S OXYGEN REGULATOR WAS EXPERIENCED. BECAUSE OF THE FAILURE; OXYGEN WAS DISCOVERED LEAKING FROM THE CAPT'S OXYGEN MASK AND A LOSS OF OXYGEN FROM THE COCKPIT OXYGEN BOTTLE RESULTED. A DSCNT TO A LOWER ALT WAS INITIATED AND A DIVERT INTO ZZZ WAS COMPLETED AFTER CONSULTING WITH DISPATCH AND COMPANY MAINT SVCS.
Data retrieved from NASA's ASRS site as of May 2009 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.