37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 387194 |
Time | |
Date | 199712 |
Day | Tue |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | atc facility : zbw |
State Reference | MA |
Altitude | msl bound lower : 33000 msl bound upper : 33000 |
Environment | |
Light | Night |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | Fokker 100 |
Operating Under FAR Part | Part 121 |
Navigation In Use | Other Other |
Flight Phase | cruise other |
Route In Use | enroute airway : zbw |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
ASRS Report | 387194 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : commercial pilot : instrument |
Events | |
Anomaly | aircraft equipment problem : critical other anomaly other |
Independent Detector | other flight crewa |
Resolutory Action | none taken : detected after the fact |
Consequence | Other |
Supplementary | |
Primary Problem | Aircraft |
Air Traffic Incident | other |
Narrative:
At the beginning of this flight the first officer tested his oxygen mask as prescribed and it tested perfectly. However, at 33000 ft when he pulled it out, as I was getting up to use the restroom, his mask was unusable. The bottom rear headhugger/airtube had stretched and blown out so the mask would not stay on his head by itself. We restowed the first officer's mask and tested it again in its holder as prescribed in the manual. It tested perfectly. This leads me to the conclusion that the first time any pilot really need to use this type of oxygen mask in an emergency situation is the first time that crew member would find out their oxygen mask is inoperative, if they had the same problem with their mask as we did with ours. I will check mine out of the holder and my first officer's each time.
Original NASA ASRS Text
Title: A FK100 IN CRUISE AT FL330 HAD THE FO'S OXYGEN MASK FAIL WHEN ATTEMPTING TO DON THE MASK.
Narrative: AT THE BEGINNING OF THIS FLT THE FO TESTED HIS OXYGEN MASK AS PRESCRIBED AND IT TESTED PERFECTLY. HOWEVER, AT 33000 FT WHEN HE PULLED IT OUT, AS I WAS GETTING UP TO USE THE RESTROOM, HIS MASK WAS UNUSABLE. THE BOTTOM REAR HEADHUGGER/AIRTUBE HAD STRETCHED AND BLOWN OUT SO THE MASK WOULD NOT STAY ON HIS HEAD BY ITSELF. WE RESTOWED THE FO'S MASK AND TESTED IT AGAIN IN ITS HOLDER AS PRESCRIBED IN THE MANUAL. IT TESTED PERFECTLY. THIS LEADS ME TO THE CONCLUSION THAT THE FIRST TIME ANY PLT REALLY NEED TO USE THIS TYPE OF OXYGEN MASK IN AN EMER SIT IS THE FIRST TIME THAT CREW MEMBER WOULD FIND OUT THEIR OXYGEN MASK IS INOP, IF THEY HAD THE SAME PROB WITH THEIR MASK AS WE DID WITH OURS. I WILL CHK MINE OUT OF THE HOLDER AND MY FO'S EACH TIME.
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.