As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELT REPORTED GOING OFF, REMOVED PORTABLE ELT FROM COMPARTMENT 707 AND FOUND RED BATTERY TAB STILL INSTALLED ON UNIT. CONFIRMED BATTERY TAB PREVENTED ELT FROM TESTING. SDR FILED. REMOVED BATTERY TAB AND REINSTALLED BATTERY ON ELT. OPS TEST GOOD. REINSTALLED INTO COMPARTMENT 707. OK FOR SERVICE. REF. AMM 25-64-00.