As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - DURING MAINTENANCE TEST, THE TAILCONE FAILED TO DEPART THE AIRCRAFT WHEN THE EMERGENCY RELEASE HANDLE WAS ACTIVATED FROM THE AFT CABIN ENTRY DOOR POSITION. FOUND THE AFT RELEASE MECHANISM CLIPS ADJUSTMENT TOO TIGHT. ADJUSTED THE CLIP TENSION IAW DC-9 MM AND ACTIVATED THE EMERGENCY RELEASE HANDLE, TAILCONE DEPARTED THE AIRCRAFT AND DROPPED NORMALLY. (M)