Narrative:

We arrived at the aircraft more than 40 minutes early for our flight. During the preparation of the aircraft for flight; I noticed in the logbook that the crew oxygen system was serviced two days before. I noted that the crew oxygen level was around 800 and mentioned it to the first officer (first officer). I then went into the aom (airplane operations manual) to check the minimum crew oxygen requirement and noted that worse case for us would be 530 psi so we had ample to get to [our destination]. I showed the first officer where this information was located in case he had to check it in the future. Shortly before we were scheduled to push; I was told we were going to be full and have some jumpseat riders due to a previous night flight cancellation. I got involved in checking identification's and making sure we would be good for weight. There were also some weather concerns [along the route]. We were finally wrapping up the boarding and two of the jumpseaters came up and said they had to ride in the cockpit. I briefed them and got them seated as the weight and balance data came in. I did not think to check the minimum oxygen requirement for four people because I was in a rush to get pushed. When we landed; I told the first officer to get maintenance to service the oxygen and noted that the oxygen pressure was below 200 psi. I wrote up the system and remembered the four people in the cockpit and that we had probably taken off with insufficient oxygen levels for four cockpit riders.I need to slow down and re-accomplish some of my checklist items again when the operations get rushed. Even though I had previously checked the crew oxygen levels; changes occurred that put us out of limits.

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Original NASA ASRS Text

Title: B737 flight crew did not verify oxygen quantity levels after addition of jump seat riders in cockpit.

Narrative: We arrived at the aircraft more than 40 minutes early for our flight. During the preparation of the aircraft for flight; I noticed in the logbook that the Crew oxygen system was serviced two days before. I noted that the Crew oxygen level was around 800 and mentioned it to the FO (First Officer). I then went into the AOM (Airplane Operations Manual) to check the minimum Crew oxygen requirement and noted that worse case for us would be 530 psi so we had ample to get to [our destination]. I showed the FO where this information was located in case he had to check it in the future. Shortly before we were scheduled to push; I was told we were going to be full and have some Jumpseat Riders due to a previous night flight cancellation. I got involved in checking ID's and making sure we would be good for weight. There were also some weather concerns [along the route]. We were finally wrapping up the boarding and two of the Jumpseaters came up and said they had to ride in the cockpit. I briefed them and got them seated as the weight and balance data came in. I did not think to check the minimum oxygen requirement for four people because I was in a rush to get pushed. When we landed; I told the FO to get Maintenance to service the oxygen and noted that the oxygen pressure was below 200 PSI. I wrote up the system and remembered the four people in the cockpit and that we had probably taken off with insufficient oxygen levels for four Cockpit Riders.I need to slow down and re-accomplish some of my checklist items again when the operations get rushed. Even though I had previously checked the Crew oxygen levels; changes occurred that put us out of limits.

Data retrieved from NASA's ASRS site 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.