As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE TAIL CONE FAILED TO UNLOCK AND DROP DURING THE FUNCTIONAL CHECK OPN 6908. MAINTENANCE FOUND THE SPRING IN THE T-PIN PLUNGER WAS MISSING SO THEY INSTALLED A NEW SPRING, CLEANED, AND LUBRICATED THE CLIPS AT THE T-PIN PLUNGER. SYSTEM REQUIRES AN OPERATIONAL CHECK.