Narrative:

Upon visiting the forward lav before departure I noticed blue security seal tape was over the oxygen mask door preventing it from deploying in the event of a loss of cabin pressure. We wrote up the issue; and contacted local station maintenance to remove the tape. This is the second time in 3 months that I have seen security tape placed on the supplemental oxygen door in a lavatory. It appears that there is a training deficiency for the personnel that place the security tape in the aircraft. It is a serious incident that could result in loss of life during a depressurization event.

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Original NASA ASRS Text

Title: B757-200 FO DISCOVERS SECURITY CHECK PERSONNEL HAD PLACED SECURITY TAPE OVER THE O2 CONTAINER DOORS IN THE LAVATORIES RENDERING THEM INOPERABLE.

Narrative: UPON VISITING THE FORWARD LAV BEFORE DEPARTURE I NOTICED BLUE SECURITY SEAL TAPE WAS OVER THE OXYGEN MASK DOOR PREVENTING IT FROM DEPLOYING IN THE EVENT OF A LOSS OF CABIN PRESSURE. WE WROTE UP THE ISSUE; AND CONTACTED LOCAL STATION MAINTENANCE TO REMOVE THE TAPE. THIS IS THE SECOND TIME IN 3 MONTHS THAT I HAVE SEEN SECURITY TAPE PLACED ON THE SUPPLEMENTAL OXYGEN DOOR IN A LAVATORY. IT APPEARS THAT THERE IS A TRAINING DEFICIENCY FOR THE PERSONNEL THAT PLACE THE SECURITY TAPE IN THE AIRCRAFT. IT IS A SERIOUS INCIDENT THAT COULD RESULT IN LOSS OF LIFE DURING A DEPRESSURIZATION EVENT.

Data retrieved from NASA's ASRS site as of May 2009 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.