As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F7X S/N 033 REGISTRATION N7X WAS INDUCTED AT JET AVIATION BASEL UNDER PROJECT BN7X0002 TO TROUBLESHOOT A SUSPECTED PASSENGERS OXYGEN LEAK. THE TROUBLESHOOTING PERFORMED UNDER PROJECT BN7X0002 WORK ORDER 4000 CONFIRMED THAT THE ELECTRICAL FLOW CONTROL UNIT (EFCU) P/N 449249 S/N 141 WAS THE CAUSE OF THE FAILURE. THE SUBJECT FAILURE WAS CORRECTED UNDER PROJECT BN7X0002 AND THE FAULTY UNIT REPLACED WITH P/N 449249 S/N 153. AN INTERNAL SAFETY REPORT WAS FILED UNDER NO. 17971.