|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201-1800|
|Make Model Name||B757-200|
|Operating Under FAR Part||Part 121|
|Aircraft Component||Oxygen System/Crew|
|Experience||Flight Crew Last 90 Days 250|
Flight Crew Total 9500
Flight Crew Type 3800
|Anomaly||Aircraft Equipment Problem Critical|
Deviation - Procedural Published Material / Policy
Deviation - Procedural Maintenance
During cockpit preparation checks we did not accomplish the full oxygen check; pressing the test switch for a full five seconds. The oxygen check was normal otherwise. In the future I will do this check as indicated on the captains cockpit checklist in the normals section of the flight manual. We were later informed that the oxygen valve had been 'off' after coming out of a maintenance 'C' check and was actually 'off' for our flight.
Original NASA ASRS Text
Title: A B757-200 flight crew reports they did not properly accomplish the Oxygen [Mask] Check by pressing the Test switch for a full five seconds. Pilot was later informed the Crew Oxygen bottle valve handle was in the 'Off' position after coming out of a Maintenance 'C' Check. The flight crew unknowingly departed without crew oxygen available.
Narrative: During Cockpit Preparation Checks we did not accomplish the full Oxygen Check; pressing the test switch for a full five seconds. The Oxygen Check was normal otherwise. In the future I will do this Check as indicated on the Captains Cockpit Checklist in the Normals section of the Flight Manual. We were later informed that the Oxygen valve had been 'Off' after coming out of a Maintenance 'C' check and was actually 'Off' for our flight.
Data retrieved from NASA's ASRS site as of April 2012 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.