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During climb out when returning from their destination airport, the flight crew of a B727 discovered that the crew oxygen pressure was low and could not change it. Therefore, after coordination with company they diverted to land and deplane passenger while it was fixed. The cause was determined to be a closed shutoff valve, which is located in the equipment bay and accessed from outside of the aircraft.
| Attributes | |
| ACN | 355445 |
| Time | |
| Date | 199604 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sju |
| State Reference | PR |
| Altitude | msl bound lower : 25000 msl bound upper : 30000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : tj25 |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : atp |
| ASRS Report | 355445 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
On climb out from sju, ewr at FL250, noticed crew oxygen indicator at 160 pounds pressure. Notified captain and got immediate descent to 10000 ft. Called company on HF for desired handling point. Proceeded to mco, deplaned several connecting passenger. Aircraft preflight at ewr had been normal with no discrepancies noted. Advised passenger that landing at mco was due to technical problem, but did not tell them it was due to oxygen. Did not wish them to be confused with another air carrier's trouble. Mco maintenance discovered crew oxygen valve closed in east&east bay.
Original NASA ASRS Text
Title: DURING CLB OUT WHEN RETURNING FROM THEIR DEST ARPT, THE FLC OF A B727 DISCOVERED THAT THE CREW OXYGEN PRESSURE WAS LOW AND COULD NOT CHANGE IT. THEREFORE, AFTER COORD WITH COMPANY THEY DIVERTED TO LAND AND DEPLANE PAX WHILE IT WAS FIXED. THE CAUSE WAS DETERMINED TO BE A CLOSED SHUTOFF VALVE, WHICH IS LOCATED IN THE EQUIP BAY AND ACCESSED FROM OUTSIDE OF THE ACFT.
Narrative: ON CLBOUT FROM SJU, EWR AT FL250, NOTICED CREW OXYGEN INDICATOR AT 160 LBS PRESSURE. NOTIFIED CAPT AND GOT IMMEDIATE DSCNT TO 10000 FT. CALLED COMPANY ON HF FOR DESIRED HANDLING POINT. PROCEEDED TO MCO, DEPLANED SEVERAL CONNECTING PAX. ACFT PREFLT AT EWR HAD BEEN NORMAL WITH NO DISCREPANCIES NOTED. ADVISED PAX THAT LNDG AT MCO WAS DUE TO TECHNICAL PROB, BUT DID NOT TELL THEM IT WAS DUE TO OXYGEN. DID NOT WISH THEM TO BE CONFUSED WITH ANOTHER ACR'S TROUBLE. MCO MAINT DISCOVERED CREW OXYGEN VALVE CLOSED IN E&E BAY.
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.