As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A POST MAINTENANCE GROUND RUN CHECK, THE TAILCONE BLEED AIR LEAK LIGHT ILLUMINATED IN THE COCKPIT. TROUBLESHOOTING THE CAUSE FOUND A CRACKED PNEUMATIC BLEED AIR PIPE. REPLACEMENT OF THE PIPE WAS ACCOMPLISHED. SYSTEM NOW OPERATES NORMALLY. INSPECTION OF THE PIPE AFTER REPLACEMENT INDICATES THAT THIS PIPE MAY HAVE BEEN CRACKED FOR SOME TIME.