The investigation into this matter consists of an evaluation of the received device logs only as the replaced oxygen gas module nozzle units (fresh gas and reflector modules) have not been available for investigation.The logs were received and show that successful system check outs were performed prior to and after the event indicating that no technical malfunctions were present.The received logs contain alarms for low fio2 and airway pressure:high.No technical errors in the tech log related to the reported event can be seen.Without having been able to investigate the replaced parts, we are unable to determine the true cause of the reported issues.
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