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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A B737-200 flight crew at FL370 continues their flight to destination after discovering either a gauge problem or a possible loss of oxygen in the crew's system when 10 mi east of sav, GA.
| Attributes | |
| ACN | 538003 |
| Time | |
| Date | 200202 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sav.airport |
| State Reference | GA |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : multi engine pilot : cfi |
| Experience | flight time last 90 days : 225 flight time total : 8800 flight time type : 1920 |
| ASRS Report | 538003 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : oxygen gauge other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure performance deficiency : testing performance deficiency : fault isolation performance deficiency : inspection performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
At a cruising altitude of 37000 ft, I looked up on the overhead panel of the B737, and noticed the crew oxygen pressure was at 100 psi. Since we flew this same plane the night before, and had the same problem, we assumed it was a gauge problem again. We ran the checklist for loss of oxygen and it did not give us guidance to divert or descend. We continued to our destination, and on approach, the oxygen pressure came back up to 1400 psi. We wrote it up at our destination. At cruise altitude, we tested all 3 masks and had normal pressure. Perhaps in hindsight, we should have descended and diverted and had the problem looked at in case we had a fire on board. We did not think it necessary, since the day before, the same thing happened.
Original NASA ASRS Text
Title: A B737-200 FLC AT FL370 CONTINUES THEIR FLT TO DEST AFTER DISCOVERING EITHER A GAUGE PROB OR A POSSIBLE LOSS OF OXYGEN IN THE CREW'S SYS WHEN 10 MI E OF SAV, GA.
Narrative: AT A CRUISING ALT OF 37000 FT, I LOOKED UP ON THE OVERHEAD PANEL OF THE B737, AND NOTICED THE CREW OXYGEN PRESSURE WAS AT 100 PSI. SINCE WE FLEW THIS SAME PLANE THE NIGHT BEFORE, AND HAD THE SAME PROB, WE ASSUMED IT WAS A GAUGE PROB AGAIN. WE RAN THE CHKLIST FOR LOSS OF OXYGEN AND IT DID NOT GIVE US GUIDANCE TO DIVERT OR DSND. WE CONTINUED TO OUR DEST, AND ON APCH, THE OXYGEN PRESSURE CAME BACK UP TO 1400 PSI. WE WROTE IT UP AT OUR DEST. AT CRUISE ALT, WE TESTED ALL 3 MASKS AND HAD NORMAL PRESSURE. PERHAPS IN HINDSIGHT, WE SHOULD HAVE DSNDED AND DIVERTED AND HAD THE PROB LOOKED AT IN CASE WE HAD A FIRE ON BOARD. WE DID NOT THINK IT NECESSARY, SINCE THE DAY BEFORE, THE SAME THING HAPPENED.
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.