As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FUNCTIONAL CHECK OF TAILCONE RELEASE SYSTEM USING AFT PASSENGER ENTRANCE DOOR EMERGENCY HANDLE, AFTER TAILCONE RELEASED FROM ACFT A TAILCONE UNSAFE MESSAGE ON EOAP PANEL IN FLIGHT COMPARTMENT FAILED TO COME ON. REPLACED THE SWITCH S1-538 IAW WDM 52-73-11. OPS GOOD. OK FOR SERVICE.