As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT GOT A TRANSMISSION CHIP WARNING LIGHT. HE DID A PRECAUTIONARY LANDING OUTSIDE OF SALOME AZ , TRANSMISSION OIL AND FILTER REPLACED ALONG WITH A 20-MINUTE GROUND RUN AT 100%. CHECKED GOOD. (SERVICEABILITY CHECK WITH REFERENCE TO BH 407 MM DMC-407-A-63-00-00-01A-320A-A).