As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REMOVED DORNE AND MARGOLIN EMERGENCY LOCATOR TRANSMITTER FOR ANNUAL INSPECTION/FUNCTION CHECK AND BATTERY INSPECTION. FOUND THAT FUNCTION CHECK WOULD NOT ACTIVATE ELT. ELT WOULD WORK IN 'ON' POSITION, BUT NOT IN 'ARM'. RETURN TO D AND F OR REPAIRS. INV NR 158190.