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A DC10 first officer donned his oxygen mask when the captain left the flight deck. The so was an aged 60 retired DC10 captain who had down bid to flight engineer. The so took the captain's seat in order to relieve the first officer from wearing the mask. Later, they found out that the so was no longer allowed or qualified to situation in the captain's chair.
| Attributes | |
| ACN | 462780 |
| Time | |
| Date | 200002 |
| Day | Mon |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| State Reference | NF |
| Altitude | msl single value : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : czqx.artcc tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : instrument pilot : multi engine pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 13500 flight time type : 5000 |
| ASRS Report | 462780 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : atp pilot : flight engineer |
| Events | |
| Anomaly | non adherence : company policies non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | FAA Company Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
During cruise flight, the captain had to leave the cockpit. I put on my mask (oxygen). The so (formerly a DC10 captain who down bid to so at age 60) got in the captain seat and motioned that I could take off my mask. I did so, believing that it was acceptable. Upon further checking of our manual, we later found that assumption to be incorrect. Although he had a type rating on the aircraft, it was not an adequate reason for me to remove my mask. The mask was in my hand ready for donning until the captain returned and was fully seated upon his return.
Original NASA ASRS Text
Title: A DC10 FO DONNED HIS OXYGEN MASK WHEN THE CAPT LEFT THE FLT DECK. THE SO WAS AN AGED 60 RETIRED DC10 CAPT WHO HAD DOWN BID TO FE. THE SO TOOK THE CAPT'S SEAT IN ORDER TO RELIEVE THE FO FROM WEARING THE MASK. LATER, THEY FOUND OUT THAT THE SO WAS NO LONGER ALLOWED OR QUALIFIED TO SIT IN THE CAPT'S CHAIR.
Narrative: DURING CRUISE FLT, THE CAPT HAD TO LEAVE THE COCKPIT. I PUT ON MY MASK (OXYGEN). THE SO (FORMERLY A DC10 CAPT WHO DOWN BID TO SO AT AGE 60) GOT IN THE CAPT SEAT AND MOTIONED THAT I COULD TAKE OFF MY MASK. I DID SO, BELIEVING THAT IT WAS ACCEPTABLE. UPON FURTHER CHKING OF OUR MANUAL, WE LATER FOUND THAT ASSUMPTION TO BE INCORRECT. ALTHOUGH HE HAD A TYPE RATING ON THE ACFT, IT WAS NOT AN ADEQUATE REASON FOR ME TO REMOVE MY MASK. THE MASK WAS IN MY HAND READY FOR DONNING UNTIL THE CAPT RETURNED AND WAS FULLY SEATED UPON HIS RETURN.
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.