As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE TAILCONE FAILED TO SEPARATE FROM AIRCRAFT WHEN USING AFT ENTRANCE DOOR TO DEPLOY TAILCONE. FOUND L/H TAILCONE RELEASE CABLE FRAYED IN TWO PLACES WHERE IT PASSES OVER UPPER PULLEY. REPLACED CABLE AND PERFORMED ADJUSTMENT TEST OF TAILCONE SYSTEM IAW MM 53-53-00.