As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENGINE IGNITION HARNESS LEAD THAT ATTACHES TO THE SPARK PLUG IS A 90 DEGREE TUBING WITH BRAZED COUPLERS. THESE BRAZED COUPLERS ARE CRACKING AND BREAKING, REQUIRING THEIR UNSCHEDULED REPLACEMENT. 2 HAVE REQUIRED REPLACEMENT IN 283.5 HOURS TIME IN SERVICE.